With examples from Tanzania identify source of demographic data?

1. National Bureau of Statistics (NBS): The NBS is the main government agency responsible for collecting, analyzing, and disseminating demographic data in Tanzania. They conduct regular censuses and surveys to gather information on population size, growth, distribution, and other demographic characteristics.

2. Tanzania Demographic and Health Survey (TDHS): The TDHS is a nationally representative survey conducted every few years to collect data on a wide range of demographic and health indicators, including fertility, mortality, family planning, and maternal and child health. The survey is conducted by the NBS in collaboration with other organizations such as the Ministry of Health and Social Welfare and the United States Agency for International Development (USAID).

3. Population and Housing Census: The Population and Housing Census is conducted every 10 years by the NBS to provide detailed information on the demographic and housing characteristics of the population. The most recent census was conducted in 2012, and the next one is scheduled for 2022.

4. Vital registration systems: Tanzania has a system for registering births, deaths, and marriages, which provides important demographic data. However, coverage and completeness of vital registration systems can vary across different regions and populations in the country.

5. Academic research and surveys: Researchers and academic institutions in Tanzania also conduct studies and surveys to gather demographic data on specific topics or populations. These studies may be funded by government agencies, international organizations, or academic institutions.

Sources of Demographic Data in Tanzania

1. National Census

- The National Bureau of Statistics (NBS) conducts a Population and Housing Census every ten years.
- Example: The 2022 Population and Housing Census collected data on population size, age distribution, household size, and housing conditions.

2. Vital Registration System

- The NBS manages a Vital Registration System that registers births, deaths, and marriages.
- Example: The system provides data on fertility rates, mortality rates, and marital status.

3. Sample Surveys

- The NBS conducts regular sample surveys to collect demographic data.
- Example: The Tanzania Demographic and Health Survey (TDHS) provides information on fertility, mortality, contraceptive use, and maternal and child health.

4. Administrative Records

- Various government agencies collect demographic data as part of their administrative functions.
- Example: The Ministry of Education maintains records on school enrollment and attendance.

5. International Organizations

- International organizations like the United Nations Population Fund (UNFPA) and the World Bank collect demographic data on Tanzania.
- Example: UNFPA's State of the World Population report provides global and national data on population trends.

6. Demographic Projections

- The NBS produces demographic projections based on past census data and other sources.
- Example: The 2013-2033 National Population Projections provide estimates of future population size, growth rates, and age distribution.

7. Geospatial Data

- The NBS and other organizations collect geospatial data on population distribution and population density.
- Example: The 2012 National Population and Housing Census Atlas provides maps and charts showing the distribution of population across Tanzania.