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99-530: Demographic features of the population of Tanzania include population density , ethnicity , education level, health of the populace, economic status, religious affiliations, and other aspects of the population. The population distribution in Tanzania is extremely uneven. Most people live on the northern border or the eastern coast, with much of the remainder of the country being sparsely populated. Density varies from 12 per square kilometre (31/sq mi) in

198-468: A significant comparison, numbers must be altered for the size of the population that is under study. For example, the fertility rate is calculated as the ratio of the number of births to women of childbearing age to the total number of women in this age range. If these adjustments were not made, we would not know if a nation with a higher rate of births or deaths has a population with more women of childbearing age or more births per eligible woman. Within

297-542: A TFR of 2.0 over a long time would decrease, unless it had a large enough immigration. It may take several generations for a change in the total fertility rate to be reflected in birth rate , because the age distribution must reach equilibrium. For example, a population that has recently dropped below replacement-level fertility will continue to grow, because the recent high fertility produced large numbers of young couples, who would now be in their childbearing years. This phenomenon carries forward for several generations and

396-401: A country (or other entity) contains Population t persons at time t . What is the size of the population at time t + 1 ? Natural increase from time t to t + 1: Net migration from time t to t + 1: These basic equations can also be applied to subpopulations. For example, the population size of ethnic groups or nationalities within a given society or country is subject to

495-484: A field of sociology , though there are a number of independent demography departments. These methods have primarily been developed to study human populations, but are extended to a variety of areas where researchers want to know how populations of social actors can change across time through processes of birth, death, and migration . In the context of human biological populations, demographic analysis uses administrative records to develop an independent estimate of

594-501: A given year. When the NRR is exactly 1, each generation of females is precisely replacing itself. The NRR is not as commonly used as the TFR, but it is particularly relevant in cases where the number of male babies born is very high due to gender imbalance and sex selection . This is a significant consideration in world population dynamics, especially given the high level of gender imbalance in

693-438: A low level of gender inequality, and infertility. The effect of all these factors can be summarized with a plot of total fertility rate against Human Development Index (HDI) for a sample of countries. The chart shows that the two factors are inversely correlated , that is, in general, the lower a country's HDI the higher its fertility. Another common way of summarizing the relationship between economic development and fertility

792-450: A lower fertility rate than poor countries, those with low per capita GDP. This may seem counter-intuitive. The inverse relationship between income and fertility has been termed a demographic-economic paradox because evolutionary biology suggests that greater means should enable the production of more offspring, not fewer. Many of these factors may differ by region and social class. For instance, Scandinavian countries and France are among

891-541: A massive compulsory sterilization drive was carried out in India, but it is considered to be a failure and is criticized for being an abuse of power. Some governments have sought to regulate which groups of society could reproduce through eugenic policies, including forced sterilizations of population groups they considered undesirable. Such policies were carried out against ethnic minorities in Europe and North America in

990-460: A new product, and to analyze certain dynamics of a company's workforce. Choosing a new location for a branch of a bank, choosing the area in which to start a new supermarket, consulting a bank loan officer that a particular location would be a beneficial site to start a car wash, and determining what shopping area would be best to buy and be redeveloped in metropolis area are types of problems in which demographers can be called upon. Standardization

1089-498: A period of transition where in demography emerged from statistics as a separate field of interest. This period included a panoply of international 'great demographers' like Adolphe Quetelet (1796–1874), William Farr (1807–1883), Louis-Adolphe Bertillon (1821–1883) and his son Jacques (1851–1922), Joseph Körösi (1844–1906), Anders Nicolas Kaier (1838–1919), Richard Böckh (1824–1907), Émile Durkheim (1858–1917), Wilhelm Lexis (1837–1914), and Luigi Bodio (1840–1920) contributed to

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1188-411: A reduction of 84%, and the TFR declined to 3.2. By 2018, child mortality had declined further to 0.6% and the TFR declined to 1.9, below replacement level. The chart shows that the decline in the TFR since the 1960s has occurred in every region of the world. The global TFR is projected to continue declining for the remainder of the century, and reach a below-replacement level of 1.8 by 2100. In 2022,

1287-426: A standardized mortality rate (SMR) or standardized incidence rate (SIR). Population change is analyzed by measuring the change between one population size to another. Global population continues to rise, which makes population change an essential component to demographics. This is calculated by taking one population size minus the population size in an earlier census . The best way of measuring population change

1386-499: A variety of demographic methods for modelling population processes. They include models of mortality (including the life table , Gompertz models , hazards models , Cox proportional hazards models , multiple decrement life tables , Brass relational logits), fertility (Hermes model, Coale -Trussell models, parity progression ratios ), marriage (Singulate Mean at Marriage, Page model), disability ( Sullivan's method , multistate life tables), population projections ( Lee-Carter model ,

1485-401: Is a measure of the fertility of an imaginary woman who experiences the age-specific fertility rates for ages 15–49 that were recorded for a specific population in a given year. It represents the average number of children a woman would potentially have if she were to go through all her childbearing years in a single year, subject to the age-specific fertility rates for that year. In simpler terms,

1584-535: Is a plot of TFR against per capita GDP , a proxy for standard of living. This chart shows that per capita GDP is also inversely correlated with fertility. The impact of human development on TFR can best be summarized by a quote from Karan Singh , a former minister of population in India. At a 1974 United Nations population conference in Bucharest, he said "Development is the best contraceptive ." Wealthy countries, those with high per capita GDP, usually have

1683-420: Is a poorer estimate of actual completed family size than the total cohort fertility rate, which is obtained by summing the age-specific fertility rates that actually applied to each cohort as they aged through time. In particular, the TFR does not necessarily predict how many children young women now will eventually have, as their fertility rates in years to come may change from those of older women now. However,

1782-441: Is a useful demographic technique used in the analysis of a business. It can be used as an interpretive and analytic tool for the comparison of different markets. These organizations have interests about the number and characteristics of their clients so they can maximize the sale of their products, their outlook on their influence, or the ends of their power, services, and beneficial works. Total fertility rate As of 2023,

1881-417: Is because developed countries have proportionally more older people, who are more likely to die in a given year, so that the overall mortality rate can be higher even if the mortality rate at any given age is lower. A more complete picture of mortality is given by a life table , which summarizes mortality separately at each age. A life table is necessary to give a good estimate of life expectancy. Suppose that

1980-577: Is called population momentum , population inertia, or population-lag effect . This time-lag effect is of great importance to the growth rates of human populations. TFR (net) and long-term population growth rate, g, are closely related. For a population structure in a steady state and with zero migration, g = log ⁡ ( TFR / 2 ) X m {\textstyle g={\tfrac {\log({\text{TFR}}/2)}{{\text{X}}_{m}}}} , where X m {\displaystyle {\text{X}}_{m}}

2079-477: Is for the Xiangyang district of Jiamusi city ( Heilongjiang , China) which had a TFR of 0.41 in 2000. In 2023, South Korea's TFR was 0.72 the world's lowest for that year. Outside Asia, the lowest TFR ever recorded was 0.80 for Eastern Germany in 1994. The low Eastern German value was influenced by a change to higher maternal age at birth, with the consequence that neither older cohorts (e.g. women born until

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2178-431: Is likely to continue to rise. Populations can change through three processes: fertility, mortality, and migration. Fertility involves the number of children that women have and is to be contrasted with fecundity (a woman's childbearing potential). Mortality is the study of the causes, consequences, and measurement of processes affecting death to members of the population. Demographers most commonly study mortality using

2277-431: Is mean age for childbearing women and thus P ( t ) = P ( 0 ) ( g t ) {\textstyle P(t)=P(0)^{(gt)}} . At the left side is shown the empirical relation between the two variables in a cross-section of countries with the most recent y-y growth rate. The parameter 1 b {\textstyle {\tfrac {1}{b}}} should be an estimate of

2376-414: Is not based on the actual fertility of a specific group of women, as that would require waiting until they have completed childbearing . It also does not involve counting the total number of children born over their lifetime. Instead, the TFR is based on the age-specific fertility rates of women in their "child-bearing years," typically considered to be ages 15–44 in international statistical usage. The TFR

2475-550: Is seen as the intellectual father of ideas of overpopulation and the limits to growth. Later, more sophisticated and realistic models were presented by Benjamin Gompertz and Verhulst . In 1855, a Belgian scholar Achille Guillard defined demography as the natural and social history of human species or the mathematical knowledge of populations, of their general changes, and of their physical, civil, intellectual, and moral condition. The period 1860–1910 can be characterized as

2574-786: Is seen not to be the case. Fertility factors are determinants of the number of children that an individual is likely to have. Fertility factors are mostly positive or negative correlations without certain causations . Factors generally associated with increased fertility include the intention to have children, very high level of gender inequality, inter-generational transmission of values, marriage and cohabitation , maternal and social support, rural residence, pro family government programs, low IQ and increased food production. Factors generally associated with decreased fertility include rising income , value and attitude changes, education, female labor participation , population control , age, contraception , partner reluctance to having children,

2673-473: Is the statistical study of human populations : their size, composition (e.g., ethnic group, age), and how they change through the interplay of fertility (births), mortality (deaths), and migration. Demographic analysis examines and measures the dimensions and dynamics of populations; it can cover whole societies or groups defined by criteria such as education , nationality , religion , and ethnicity . Educational institutions usually treat demography as

2772-554: Is the case in much of the developing world, and most of historical demography . One of these techniques in contemporary demography is the sister method, where survey researchers ask women how many of their sisters have died or had children and at what age. With these surveys, researchers can then indirectly estimate birth or death rates for the entire population. Other indirect methods in contemporary demography include asking people about siblings, parents, and children. Other indirect methods are necessary in historical demography. There are

2871-464: Is the mean age for childbearing women. The TPFR (total period fertility rate) is affected by a tempo effect —if age of childbearing increases, and life cycle fertility is unchanged, then while the age of childbearing is increasing, TPFR will be lower, because the births are occurring later, and then the age of childbearing stops increasing, the TPFR will increase, due to the deferred births occurring in

2970-400: Is the total fertility rate at which women give birth to enough babies to sustain population levels, assuming that mortality rates remain constant and net migration is zero. If replacement level fertility is sustained over a sufficiently long period, each generation will exactly replace itself. In 2003, the replacement fertility rate was 2.1 births per female for most developed countries (2.1 in

3069-432: Is today widely taught in many universities across the world, attracting students with initial training in social sciences, statistics or health studies. Being at the crossroads of several disciplines such as sociology , economics , epidemiology , geography , anthropology and history , demography offers tools to approach a large range of population issues by combining a more technical quantitative approach that represents

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3168-510: Is used in a wide variety of contexts. For example, it is often used in business plans, to describe the population connected to the geographic location of the business. Demographic analysis is usually abbreviated as DA. For the 2010 U.S. Census, The U.S. Census Bureau has expanded its DA categories. Also as part of the 2010 U.S. Census, DA now also includes comparative analysis between independent housing estimates, and census address lists at different key time points. Patient demographics form

3267-421: Is using the intercensal percentage change. The intercensal percentage change is the absolute change in population between the censuses divided by the population size in the earlier census. Next, multiply this a hundredfold to receive a percentage . When this statistic is achieved, the population growth between two or more nations that differ in size, can be accurately measured and examined. For there to be

3366-413: The X m {\displaystyle {\text{X}}_{m}} ; here equal to 1 0.02 = 50 {\textstyle {\tfrac {1}{0.02}}=50} years, way off the mark because of population momentum. E.g. for log ( TFR 2 ) = 0 {\textstyle {\log }({\tfrac {\text{TFR}}{2}})=0} , g should be exactly zero, which

3465-905: The British diaspora ) reside in Tanzania. Over 100,000 people living in Tanzania are of Asian or European ancestry. Based on 1999–2003 data, over 74,000 Tanzanian-born people were living in Organisation for Economic Co-operation and Development countries, with 32,630 residing in the United Kingdom ; 19,960 in Canada ; 12,225 in the United States ; 1,714 in Australia ; 1,180 in the Netherlands ; and 1,012 in Sweden . According to

3564-755: The International Union for the Scientific Study of Population , or a national association such as the Population Association of America in the United States, or affiliates of the Federation of Canadian Demographers in Canada . Population composition is the description of population defined by characteristics such as age, race , sex or marital status . These descriptions can be necessary for understanding

3663-722: The Katavi Region to 3,133 per square kilometre (8,110/sq mi) in Dar es Salaam . Approximately 70 percent of the population is rural, although this percentage has been declining since at least 1967. Dar es Salaam is the de facto capital and largest city. Dodoma , located in the centre of Tanzania, is the de jure capital, although action to move government buildings to Dodoma has stalled. The population consists of about 125 ethnic groups . The Sukuma , Nyamwezi , Chagga , and Haya peoples have more than 1 million members each. Over 100 languages are spoken in Tanzania , making it

3762-666: The Leslie Matrix ), and population momentum ( Keyfitz ). The United Kingdom has a series of four national birth cohort studies, the first three spaced apart by 12 years: the 1946 National Survey of Health and Development , the 1958 National Child Development Study , the 1970 British Cohort Study , and the Millennium Cohort Study , begun much more recently in 2000. These have followed the lives of samples of people (typically beginning with around 17,000 in each study) for many years, and are still continuing. As

3861-516: The Middle Ages , Christian thinkers devoted much time in refuting the Classical ideas on demography. Important contributors to the field were William of Conches , Bartholomew of Lucca , William of Auvergne , William of Pagula , and Muslim sociologists like Ibn Khaldun . One of the earliest demographic studies in the modern period was Natural and Political Observations Made upon

3960-510: The United States and much of Europe ), registry statistics are the best method for estimating the number of births and deaths. A census is the other common direct method of collecting demographic data. A census is usually conducted by a national government and attempts to enumerate every person in a country. In contrast to vital statistics data, which are typically collected continuously and summarized on an annual basis, censuses typically occur only every 10 years or so, and thus are not usually

4059-666: The life table , a statistical device that provides information about the mortality conditions (most notably the life expectancy) in the population. Migration refers to the movement of persons from a locality of origin to a destination place across some predefined, political boundary. Migration researchers do not designate movements 'migrations' unless they are somewhat permanent. Thus, demographers do not consider tourists and travellers to be migrating. While demographers who study migration typically do so through census data on place of residence, indirect sources of data including tax forms and labour force surveys are also important. Demography

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4158-433: The social dynamics from historical and comparative research. This data is often compared using a population pyramid . Population composition is also a very important part of historical research. Information ranging back hundreds of years is not always worthwhile, because the numbers of people for which data are available may not provide the information that is important (such as population size ). Lack of information on

4257-469: The 1990s, when many orphanages were closed and the children ended up on the streets, overcrowding in homes and schools, and over 9,000 women who died due to illegal abortions . Conversely, in China the government sought to lower the fertility rate, and, as such, enacted the one-child policy (1978–2015), which included abuses such as forced abortions . In India, during the national emergency of 1975 ,

4356-426: The 2010s and early 2020s. The average fertility rate in countries such as Thailand or Chile approached the mark of one child per woman, which triggered concerns about the rapid aging of populations worldwide. The table shows that after 1965, the demographic transition spread around the world, and the global TFR began a long decline that continues in the 21st century. The United Nations Population Division divides

4455-494: The 2012 census, the total population was 44,928,923 compared to 12,313,469 in 1967, resulting in an annual growth rate of 2.9 percent. The under 15 age group represented 44.1 percent of the population, with 35.5 percent being in the 15–35 age group, 52.2 percent being in the 15–64 age group, and 3.8 percent being older than 64. According to the 2012 revision of the World Population Prospects , children below

4554-572: The 20th century include those in communist Romania and communist Albania , under Nicolae Ceaușescu and Enver Hoxha respectively. The natalist policy in Romania between 1967 and 1989 was very aggressive, including outlawing abortion and contraception, routine pregnancy tests for women, taxes on childlessness , and legal discrimination against childless people. It resulted in large numbers of children put into Romanian orphanages by parents who could not cope with raising them, street children in

4653-697: The Application of Probabilities to Life Contingencies (1838). In 1755, Benjamin Franklin published his essay Observations Concerning the Increase of Mankind, Peopling of Countries, etc. , projecting exponential growth in British colonies . His work influenced Thomas Robert Malthus , who, writing at the end of the 18th century, feared that, if unchecked, population growth would tend to outstrip growth in food production, leading to ever-increasing famine and poverty (see Malthusian catastrophe ). Malthus

4752-564: The Bills of Mortality (1662) by John Graunt , which contains a primitive form of life table . Among the study's findings were that one-third of the children in London died before their sixteenth birthday. Mathematicians, such as Edmond Halley , developed the life table as the basis for life insurance mathematics. Richard Price was credited with the first textbook on life contingencies published in 1771, followed later by Augustus De Morgan , On

4851-570: The Industrial Revolution began in some places, particularly Great Britain, continental Europe, and the United States, and they underwent the beginnings of what is now called the demographic transition. Stage two of this process fueled a steady reduction in mortality rates due to improvements in public sanitation , personal hygiene and the food supply , which reduced the number of famines. These reductions in mortality rates, particularly reductions in child mortality, that increased

4950-516: The TFR in the United States was 7.0. Fertility rates in East Asia during this period were similar to those in Europe. Fertility rates in Roman Egypt were 7.4. Despite these high fertility rates, the number of surviving children per woman was always around two because of high mortality rates. As a result, global population growth was still very slow, about 0.04% per year . After 1800,

5049-413: The TFR is a reasonable summary of current fertility levels. TFR and long term population growth rate, g , are closely related. For a population structure in a steady state, growth rate equals log ⁡ ( T F R / 2 ) / X m {\displaystyle \log(\mathrm {TFR} /2)/X_{m}} , where X m {\displaystyle X_{m}}

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5148-427: The TFR is the number of children a woman would have if she were to experience the prevailing fertility rates at all ages from a single given year and survived throughout her childbearing years. An alternative measure of fertility is the net reproduction rate (NRR), which calculates the number of daughters a female would have in her lifetime if she were subject to prevailing age-specific fertility and mortality rates in

5247-630: The UK, for example), but could be as high as 3.5 in undeveloped countries because of higher mortality rates , especially child mortality . The global average for the replacement total fertility rate, eventually leading to a stable global population, for 2010–2015, was 2.3 children per female. The term lowest-low fertility is defined as a TFR at or below 1.3. Lowest-low fertility is found almost exclusively within East Asian countries and Southern European countries. The East Asian American community in

5346-452: The US was 33%, meaning that one third of all children born would die before their fifth birthday. The TFR in 1800 was 7.0, meaning that the average female would bear seven children during their lifetime. In 1900, child mortality in the US had declined to 23%, a reduction of almost one third, and the TFR had declined to 3.9, a reduction of 44%. By 1950, child mortality had declined dramatically to 4%,

5445-458: The United States also exhibits lowest-low fertility. At one point in the late 20th century and early 21st century this was also observed in Eastern and Southern Europe. Since then, the fertility rate has risen in most countries of Europe. However in 2023, Spain's TFR fell to 1.19, and Italy's TFR fell to 1.2 children per woman. The lowest TFR recorded anywhere in the world in recorded history,

5544-1062: The World Population Review. The following demographic statistics are from the CIA World Factbook , unless otherwise indicated. mainland - African 99% (of which 95% are Bantu consisting of more than 130 tribes), other 1% (consisting of Asian, European, and Arab); Zanzibar - Arab, African, mixed Arab and African. Around 100,000 people living in Tanzania are from Europe or Asia. at birth: 1.03 male(s)/female 0-14 years: 1.02 male(s)/female 15–54 years: 1.00 male(s)/female 55-64 years: 0.75 male(s)/female 65 years and over: 0.76 male(s)/female total population: 0.99 male(s)/female (2013 estimate) Age 15-49 HIV infection rates: People living with HIV/AIDS: Deaths: definition: age 15 and over can read and write Swahili, English, or Arabic Most Tanzanians are nowadays Christians and Muslims. The numerical relationship between followers of

5643-411: The age of 15 constituted 44.8 percent of the total population, with 52.0 percent aged 15–64 and 3.1 percent aged 65 or older. Structure of the population (01.07.2013) (Estimates) (Projections based on the 2002 Population Census.): Population Estimates by Sex and Age Group (01.VII.2020) (Projections based on the 2012 Population Census.): The Tanzanian Demographic and Health Survey 2010 estimated that

5742-467: The basic demographic equation holds true by definition, in practice the recording and counting of events (births, deaths, immigration, emigration) and the enumeration of the total population size are subject to error. So allowance needs to be made for error in the underlying statistics when any accounting of population size or change is made. The figure in this section shows the latest (2004) UN ( United Nations ) WHO projections of world population out to

5841-696: The best source of data on births and deaths. Analyses are conducted after a census to estimate how much over or undercounting took place. These compare the sex ratios from the census data to those estimated from natural values and mortality data. Censuses do more than just count people. They typically collect information about families or households in addition to individual characteristics such as age, sex, marital status, literacy/education, employment status, and occupation, and geographical location. They may also collect data on migration (or place of birth or of previous residence), language, religion, nationality (or ethnicity or race), and citizenship. In countries in which

5940-518: The category of standardization , there are two major approaches: direct standardization and indirect standardization. A stable population does not necessarily remain fixed in size. It can be expanding or shrinking. The crude death rate as defined above and applied to a whole population can give a misleading impression. For example, the number of deaths per 1,000 people can be higher in developed nations than in less-developed countries, despite standards of health being better in developed countries. This

6039-553: The core of the data for any medical institution, such as patient and emergency contact information and patient medical record data. They allow for the identification of a patient and their categorization into categories for the purpose of statistical analysis. Patient demographics include: date of birth , gender , date of death , postal code, ethnicity, blood type , emergency contact information, family doctor, insurance provider data, allergies , major diagnoses and major medical history. Formal demography limits its object of study to

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6138-498: The core of the discipline with many other methods borrowed from social or other sciences. Demographic research is conducted in universities, in research institutes, as well as in statistical departments and in several international agencies. Population institutions are part of the CICRED (International Committee for Coordination of Demographic Research) network while most individual scientists engaged in demographic research are members of

6237-426: The country. Most Tanzanian Muslims are Sunni Muslims, though there are also populations of Ibadi , Shia , Ahamadiya , Bohora. Muslims are concentrated in coastal areas and in mainland areas along former caravan trade routes. Demography Demography (from Ancient Greek δῆμος ( dêmos )  'people, society' and -γραφία ( -graphía )  'writing, drawing, description')

6336-528: The development of demography and to the toolkit of methods and techniques of demographic analysis. Demography is the statistical and mathematical study of the size, composition, and spatial distribution of human populations and how these features change over time. Data are obtained from a census of the population and from registries: records of events like birth , deaths , migrations, marriages, divorces , diseases, and employment . To do this, there needs to be an understanding of how they are calculated and

6435-649: The distribution and abundance of organisms. As it relates to organizations and demography, organizations go through various liabilities to their continued survival. Hospitals, like all other large and complex organizations are impacted in the environment they work. For example, a study was done on the closure of acute care hospitals in Florida between a particular time. The study examined effect size, age, and niche density of these particular hospitals. A population theory says that organizational outcomes are mostly determined by environmental factors . Among several factors of

6534-408: The family. The causes of turnover can be split into two separate factors, one linked with the culture of the organization, and the other relating to all other factors. People who do not fully accept a culture might leave voluntarily. Or, some individuals might leave because they fail to fit in and fail to change within a particular organization. A basic definition of population ecology is a study of

6633-636: The first half of the 20th century, and more recently in Latin America against the Indigenous population in the 1990s; in Peru , former President Alberto Fujimori has been accused of genocide and crimes against humanity as a result of a sterilization program put in place by his administration targeting indigenous people (mainly the Quechua and Aymara people). Within these historical contexts,

6732-438: The fraction of children surviving, plus other major societal changes such as urbanization , and the increased social status of women, led to stage three of the demographic transition. There was a reduction in fertility rates, because there was simply no longer a need to birth so many children. The example from the US of the correlation between child mortality and the fertility rate is illustrative. In 1800, child mortality in

6831-456: The global TFR was 2.3. Because the global fertility replacement rate for 2010–2015 was estimated to be 2.3, humanity has achieved or is approaching a significant milestone where the global fertility rate is equal to the global replacement rate. The global fertility rate may have fallen below the global replacement level of 2.2 children per woman as early as 2023. Numerous developing countries have experienced an accelerated fertility decline in

6930-402: The global average TFR was still 5.   Since then, global average TFR has dropped steadily to less than half that number, 2.3 births per woman in 2023. The United Nations predicts that global fertility will continue to decline for the remainder of this century and reach a below-replacement level of 1.8 by 2100, and that world population will peak in 2084. The Total Fertility Rate (TFR)

7029-414: The heavily populated nations of China and India. The gross reproduction rate (GRR) is the same as the NRR, except that, like the TFR, it disregards life expectancy . The TFR, sometimes called TPFR—total period fertility rate, is a better index of fertility than the crude birth rate (annual number of births per thousand population) because it is independent of the age structure of the population, but it

7128-497: The highest TFR. In 2023, the most populous country in Africa, Nigeria , had an estimated TFR of 4.57. In 2023, the second most populous African country, Ethiopia , had an estimated TFR of 3.92. The poverty of Africa, and the high maternal mortality and infant mortality had led to calls from WHO for family planning , and the encouragement of smaller families. Hong Kong , Macau , Singapore , South Korea , and Taiwan have

7227-626: The infant mortality rate for 2005–10 was 51. Registration of other vital events in Tanzania is not complete. The Population Department of the United Nations prepared the following estimates. Source: Total Fertility Rate (TFR) (Wanted Fertility Rate) and Crude Birth Rate (CBR): Fertility rates are estimated by Surveys (TDHS) and Census in different times. TDHS surveys estimated these fertility rates: 6.3 (1991–92), 5.8 (1996), 5.7 (2004–05), 5.4 (2010) and 2002 Census said 6.3 The following demographic statistics of Tanzania in 2022 are from

7326-407: The lack of access to contraceptives , generally lower levels of female education , and lower rates of female employment. It does not significantly correlate with any particular religion. From antiquity to the beginning of the industrial revolution, around the year 1800, total fertility rates of 4.5 to 7.5 were common around the world. After this TFR declined only slightly and up until the 1960’s

7425-656: The language of the Hadzabe people , although it has similar click consonants , is arguably a language isolate . The language of the Iraqw people is Cushitic. Other languages are Indian languages and Portuguese (spoken by Goans and Mozambicans). Non-Africans residing on the mainland and Zanzibar account for 1 percent of the total population. The Asian community including Hindus , Sikhs , Shi'a and Sunni Muslims , Parsis , and Goans , exceed 60,000. An estimated 70,000 Arabs and 20,000 Europeans (90 percent of which are from

7524-515: The late 1960s), who often already had children, nor younger cohorts, who were postponing childbirth, had many children during that time. The total cohort fertility rate of each age cohort of women in East Germany did not drop as significantly. A population that maintained a TFR of 3.8 over an extended period, without a correspondingly high death or emigration rate, would increase rapidly, doubling period ~ 32 years. A population that maintained

7623-509: The later period, even though the life cycle fertility has been unchanged. In other words, the TPFR is a misleading measure of life cycle fertility when childbearing age is changing, due to this statistical artifact. This is a significant factor in some countries, such as the Czech Republic and Spain in the 1990s. Some measures seek to adjust for this timing effect to gain a better measure of life-cycle fertility. Replacement fertility

7722-479: The least religious in the EU, but have the highest TFR, while the opposite is true about Portugal, Greece, Cyprus, Poland and Spain. Governments have often set population targets, to either increase or decrease the total fertility rate, or to have certain ethnic or socioeconomic groups have a lower or higher fertility rate. Often such policies have been interventionist, and abusive. The most notorious natalist policies of

7821-459: The lowest-low fertility, defined as TFR at or below 1.3, and are among the lowest in the world. In 2004, Macau had a TFR below 1.0. In 2018, North Korea had the highest TFR in East Asia, at 1.95. In 2022, China's TFR was 1.09. China implemented the one-child policy in January 1979 as a drastic population planning measure to control the ever-growing population at the time. In January 2016,

7920-418: The measurement of population processes, while the broader field of social demography or population studies also analyses the relationships between economic, social, institutional, cultural, and biological processes influencing a population. Demographic thoughts traced back to antiquity, and were present in many civilisations and cultures, like Ancient Greece , Ancient Rome , China and India . Made up of

8019-641: The most linguistically diverse country in East Africa. Among the languages spoken in Tanzania are all four of Africa's language families: Bantu , Cushitic , Nilotic , and Khoisan . Swahili and English are Tanzania's official languages. Swahili belongs to the Bantu branch of the Niger-Congo family. The Sandawe people speak a language that may be related to the Khoe languages of Botswana and Namibia, while

8118-413: The nation will become a nation of immigrants. This influx is projected to rise over the next century as new immigrants and their children will account for over half the U.S. population. These demographic shifts could ignite major adjustments in the economy, more specifically, in labor markets. People decide to exit organizations for many reasons, such as, better jobs, dissatisfaction, and concerns within

8217-541: The notion of reproductive rights has developed. Such rights are based on the concept that each person freely decides if, when, and how many children to have - not the state or religion. According to the Office of the United Nations High Commissioner for Human Rights , reproductive rights "rest on the recognition of the basic rights of all couples and individuals to decide freely and responsibly

8316-507: The number, spacing and timing of their children and to have the information and means to do so, and the right to attain the highest standard of sexual and reproductive health. It also includes the right to make decisions concerning reproduction free of discrimination, coercion and violence, as expressed in human rights documents". From around 10,000 BC to the beginning of the Industrial Revolution , fertility rates around

8415-458: The original data-collection procedures may prevent accurate evaluation of data quality. The demographic analysis of labor markets can be used to show slow population growth, population aging , and the increased importance of immigration. The U.S. Census Bureau projects that in the next 100 years, the United States will face some dramatic demographic changes. The population is expected to grow more slowly and age more rapidly than ever before and

8514-504: The other a large share or trying to show equal shares. Estimates from the Pew Report Islam and Christianity (2010) were 60% Christian and 36% Muslim. The remainder of the population are Hindus , Buddhists , animists , and unaffiliated. Most Christians are Roman Catholic , Lutheran , Anglican or Pentecostal, though a number of other churches, as Seventh-Day Adventist , and Eastern Orthodox Christians are also represented in

8613-528: The population. Demographic analysis estimates are often considered a reliable standard for judging the accuracy of the census information gathered at any time. In the labor force , demographic analysis is used to estimate sizes and flows of populations of workers; in population ecology the focus is on the birth, death, migration and immigration of individuals in a population of living organisms, alternatively, in social human sciences could involve movement of firms and institutional forms. Demographic analysis

8712-516: The prefix demo- and the suffix -graphy , the term demography refers to the overall study of population. In ancient Greece, this can be found in the writings of Herodotus , Thucydides , Hippocrates , Epicurus , Protagoras , Polus , Plato and Aristotle . In Rome, writers and philosophers like Cicero , Seneca , Pliny the Elder , Marcus Aurelius , Epictetus , Cato , and Columella also expressed important ideas on this ground. In

8811-566: The questions they answer which are included in these four concepts: population change , standardization of population numbers, the demographic bookkeeping equation, and population composition. There are two types of data collection —direct and indirect—with several methods of each type. Direct data comes from vital statistics registries that track all births and deaths as well as certain changes in legal status such as marriage, divorce, and migration (registration of place of residence). In developed countries with good registration systems (such as

8910-417: The same sources of change. When dealing with ethnic groups, however, "net migration" might have to be subdivided into physical migration and ethnic reidentification ( assimilation ). Individuals who change their ethnic self-labels or whose ethnic classification in government statistics changes over time may be thought of as migrating or moving from one population subcategory to another. More generally, while

9009-447: The samples have been drawn in a nationally representative way, inferences can be drawn from these studies about the differences between four distinct generations of British people in terms of their health, education, attitudes, childbearing and employment patterns. Indirect standardization is used when a population is small enough that the number of events (births, deaths, etc.) are also small. In this case, methods must be used to produce

9108-404: The theory, there are four that apply to the hospital closure example: size, age, density of niches in which organizations operate, and density of niches in which organizations are established. Problems in which demographers may be called upon to assist business organizations are when determining the best prospective location in an area of a branch store or service outlet, predicting the demand for

9207-668: The total fertility rate varied widely across the world, from 0.7 in South Korea , to 6.1 in Niger . Fertility tends to be inversely correlated with levels of economic development. Historically, developed countries have significantly lower fertility rates, generally correlated with greater wealth, education, urbanization , and other factors. Conversely, in least developed countries , fertility rates tend to be higher. Families desire children for their labor and as caregivers for their parents in old age. Fertility rates are also higher due to

9306-450: The two religions is regarded as politically sensitive and questions about religious affiliation have not been included in census questionnaires since 1967. For many years estimates have been repeated that about a third of the population each follows Islam, Christianity and traditional religions. As there is likely no longer such a large percentage of traditional religionists, a range of competing estimates has been published giving one side or

9405-478: The vital registration system may be incomplete, the censuses are also used as a direct source of information about fertility and mortality; for example, the censuses of the People's Republic of China gather information on births and deaths that occurred in the 18 months immediately preceding the census. Indirect methods of collecting data are required in countries and periods where full data are not available, such as

9504-512: The world into six geographical regions. The table below shows the estimated TFR for each region. (2015-2020) In 2013, the TFR of Europe , Latin America and the Caribbean , and Northern America were below the global replacement-level fertility rate of 2.1 children per female. Africa has a TFR of 4.1, the highest in the world. Angola , Benin , DR Congo , Mali , and the Niger have

9603-416: The world were high by 21st-century standards, ranging from 4.5 to 7.5 children per woman. . The onset of the Industrial Revolution around the year 1800 brought about what has come to be called the demographic transition . This eventually led to a long-term decline in TFR in every region of the world that has continued in the 21st century. During this period fertility rates of 4.5 to 7.5 were common around

9702-591: The world. Child mortality could reach 50% and that plus the need to produce workers, male heirs, and old-age caregivers required a high fertility rate by 21st-century standards. To produce two adult children in this high mortality environment required at least four or more births. For example, fertility rates in Western Europe before 1800 ranged from 4.5 in Scandinavia to 6.2 in Belgium. In 1800,

9801-533: The year 2150 (red = high, orange = medium, green = low). The UN "medium" projection shows world population reaching an approximate equilibrium at 9 billion by 2075. Working independently, demographers at the International Institute for Applied Systems Analysis in Austria expect world population to peak at 9 billion by 2070. Throughout the 21st century, the average age of the population

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