Search Population and Health Data

The rates and figures are primarily compiled from the following sources: official country statistical yearbooks and bulletins; United Nations Demographic Yearbook, 1999 (forthcoming) and Population and Vital Statistics Report, Data Available as of 1 April 2001 (forthcoming) of the UN Statistics Division; World Population Prospects: The 2000 Revision of the UN Population Division; the UN Statistical Library; Recent Demographic Developments in Europe, 2000 of the Council of Europe; Population 55:4-5 (INED) La conjoncture d?mographique, by Jean-Paul Sardon; and the data files and library resources of the International Programs Center, U.S. Census Bureau. Other sources include recent demographic surveys such as the Demographic and Health Surveys, Reproductive Health Surveys, special studies, and direct communication with demographers and statistical bureaus in the United States and abroad. Specific data sources may be obtained by contacting the authors of the 2001 World Population Data Sheet.

For countries with complete registration of births and deaths, rates are those most recently reported. For more developed countries, nearly all vital rates refer to 1999 or 2000, and for less developed countries, for some point in the late 1990s.

Sources for the World's Youth 2000

The data sheet lists all countries with populations of 500,000 or more. World and regional weighted averages are shown when data or estimates are available for at least two-thirds of the region's population. For population columns, world and regional totals include small countries not shown. The figures shown represent the most recent data or estimates available at the time of publication, unless otherwise stated. Major sources are the United Nations (UN), World Population Prospects, The 1998 Revision; UNESCO, Statistical Yearbook, 1998; World Education Report 1998; UN, The World's Women: Trends and Statistics, 1995; UNICEF, State of the World's Children 1999 and The Progress of Nations, 1996; U.S. Census Bureau HIV/AIDS Surveillance Database, 1999; WHO Global Programme on AIDS, Provisional Working Estimates of Adult HIV Prevalence, 1999; and ORC Macro, published and unpublished data from Demographic and Health Surveys. Other sources include official country yearbooks, fertility/health surveys, and special studies. Please contact PRB for specific data sources.

Sources for 1998 Women of the World

The 1998 Women of the World Data Sheet was published in March 1998. Data or estimates shown generally refer to the early or mid-1990s.

Demography Indicators: PRB, 1997 World Population Data Sheet; United Nations Population Division, World Population Prospects: The 1996 Revision; UN, The World's Women 1995; Trends and Statistics; Council of Europe, Recent Demographic Developments in Europe 1997; UN Demographic Yearbook (various years); other demographic surveys and special studies.

Women's Reproductive Health Indicators: PRB, 1997 World Population Data Sheet; UN Pouplation Division, Levels and Trends of Contraceptive Use as Assessed in 1994; Macro International, Demographic and Health Surveys; World Health Organization, Coverage of Maternity Care, 1997; UNICEF, State of the World's Children 1997; WHO and UNICEF, Revised 1990 Estimates of Maternal Mortality, A New Approach by WHO and UNICEF, April 1996; UN Demographic Yearbook 1994; Center for Reproductive Law and Policy; Family Health International, AIDSCAP, Making Prevention Work: Global Lessons from the AIDS Control and Prevention (AIDSCAP) Project 1991-1997.

Education Indicators: PRB, The World's Youth 1996; UNESCO Statistical Yearbook 1996; UNESCO Statistical Division, 1997.

Labor Force Indicators: UN, The World's Women 1995; Trends and Statistics (Internet excerpts); International Labor Office, Economically Active Population 1950-2010, 1997.

Women in Public Life Indicators: Inter-Parliamentary Union, Women in National Parliaments as of January 5, 1998; UN, Division for the Advancement of Women's compilation on ministerial data based on January 1996 information from the Worldwide Government Directory 1996.

Sources and Definitions for 2000 United States Population Data Sheet:

Estimates of 1999 resident population and growth rates are from the U.S. Census Bureau, accessed online here (Dec. 31, 1999). Projections for 2015 resident population are from the U.S. Census Bureau, accessed online here (Oct. 17, 1996). Resident population is as of July 1 of the years indicated, and does not include Armed Forces personnel stationed overseas. Land area data are from the U.S. Census Bureau, State and Metropolitan Area Data Book 1997-98. Age distribution data are from the U.S. Census Bureau, accessed online here (April 6, 2000). Median household income data are from the U.S. Census Bureau, "Money Income in the United States: 1998," Current Population Reports P60-206. Income is in 1998 dollars and rounded to the nearest $100.

Data on percent change in the working age population, 1999-2015, concern the resident population ages 16 to 64 as of July 1 of their respective years. They are from the U.S. Census Bureau, accessed online here (April 6, 2000); here (June 17, 2000); and here (various files, Feb. 7, 1999). Data for percent unemployed are calendar-year averages of monthly data, and come from the U.S. Bureau of Labor Statistics, Employment and Earnings. Data for percent of workers who are members of unions also are from the U.S. Bureau of Labor Statistics. Data for percent of 16-19 year-olds not in school and not working reflect three-year averages of tabulations from 1996 through 1998, and are from the Annie E. Casey Foundation, KIDS COUNT Data Book: 2000.

Data on persons in the labor force, including percent of women in the labor force, are for the civilian noninstitutional population ages 16 and over as of March 1999. The labor force includes persons actively looking for work, as well as those already working. Percent of workers who worked full-time, year-round measures those persons working at least 35 hours a week for at least 50 weeks during 1998. Percent of working-age population who are foreign-born measures persons ages 16 to 64. Data for these items, as well as for percent of workers with employer-based health insurance, come from PRB's analysis of data from the U.S. Census Bureau, Current Population Survey (CPS), March 1999.

Percent of employed women with children under age 6 concerns the share of working women living with at least one child under age 6 (by birth, marriage, or adoption) during March of the survey year. Percent of workers who are self-employed reflects workers' status for March of the survey year, while percent of full-time, year-round workers with incomes less than 200 percent of poverty reflects status for the previous calendar year. Data for these items, as well as for percent of 25-54 year-olds who are college graduates, are from PRB's analysis of the March CPS and reflect three-year averages of data from the surveys of 1997 through 1999.

Sources for Breastfeeding Patterns in the Developing World:

Breastfeeding Patterns in the Developing World was published in October 1999. Main sources include: Demographic and Health Surveys (DHS), country survey reports; MEASURE DHS+, special tabulations (May 1999); Centers for Disease Control and Prevention, country survey reports; League of Arab States, special tabulations of the Pan Arab Project for Child Development (PAPCHILD) surveys (May 1999); Iran Ministry of Health and Medical Education, special tabulation (May 1999); UNICEF, State of the World's Children 1999; UNICEF, Progress of Nations 1998; Population Reference Bureau, 1999 World Population Data Sheet; www.unaids.org, "Report on the Global HIV/AIDS Epidemic-June 1998" (May 1999); LINKAGES Project, Frequently Asked Questions on: Breastfeeding and HIV/AIDS, October 1998. Selected studies of mother-to-child HIV transmission:P. Msellati, et al., "Zidovudine and Reduction of Vertical Transmission of HIV in Africa," American Journal of Public Health, Vol. 89(6), June 1, 1999. E.A. Preble and E.G. Piwoz, HIV and Infant Feeding: A Chronology of Research and Policy Advances for Programs, LINKAGES Project, September 1998. V. Leroy, et al., "International multicentre pooled analysis of postnatal mother-to-child transmission of HIV-1 infection," The Lancet, Vol. 352, August 22, 1998. D.T. Dunn, et al., "Risk of Human Immunodeficiency Virus Type through Breastfeeding," The Lancet, Vol. 340, September 5, 1992.