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Codes and Frequencies



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Description

AGE1STSEX (V525) indicates the woman's self-reported age for the first time she had sexual intercourse.

Comparability

Along with universe differences, AGE1STSEX (V525) has slight differences in question wording. Special attention to should be paid to changes in question wording in the standard DHS questionnaire (see "Comparability - Standard DHS" below).

Of note is the question wording "How old were you when you first had sexual intercourse (if ever)?" used in Phase III, as the addition of "if ever" may encourage those who have not had sex to report more accurately. In general, surveys from the late 1990s and early 2000s use the Phase III wording.

Comparability - Standard DHS

AGE1STSEX (V525) first appears in phase II of the Standard DHS as "How old were you when you first had sexual intercourse?" In Phase IV, the phrase "(if ever)" is added to the question. In Phase V, the question is reworded as "How old were you when you had sexual intercourse for the very first time?" The Phase V question wording is included and consistent in all later DHS standard questionnaires.

Universe

  • Afghanistan 2015: Ever-married women age 15-49.
  • Angola 2015: All women age 15-49.
  • Bangladesh 2011: Ever-married women age 12-49.
  • Bangladesh 2014: Ever-married women age 15-49.
  • Bangladesh 2018: Ever-married women age 15-49.
  • Benin 1996: All women age 15-49.
  • Benin 2001: All women age 15-49.
  • Benin 2006: All women age 15-49.
  • Benin 2011: All women age 15-49.
  • Benin 2017: All women age 15-49.
  • Burkina Faso 1993: All women age 15-49.
  • Burkina Faso 1998: All women age 15-49.
  • Burkina Faso 2003: All women age 15-49.
  • Burkina Faso 2010: All women age 15-49.
  • Burundi 1987: All women age 15-49.
  • Burundi 2010: All women age 15-49.
  • Burundi 2016: All women age 15-49.
  • Cameroon 1991: All women age 15-49.
  • Cameroon 1998: All women age 15-49.
  • Cameroon 2004: All women age 15-49.
  • Cameroon 2011: All women age 15-49.
  • Cameroon 2018: All women age 15-64.
  • Central African Republic 1995: All women age 15-49.
  • Chad 1996: All women age 15-49.
  • Chad 2004: All women age 15-49.
  • Chad 2014: All women age 15-49.
  • Comoros 1996: All women age 15-49.
  • Comoros 2012: All women age 15-49.
  • Congo (Democratic Republic) 2007: All women age 15-49.
  • Congo (Democratic Republic) 2013: All women age 15-49.
  • Congo Brazzaville 2005: All women age 15-49.
  • Congo Brazzaville 2011: All women age 15-49.
  • Cote d'Ivoire 1994: All women age 15-49.
  • Cote d'Ivoire 1998: All women age 15-49.
  • Cote d'Ivoire 2011: All women age 15-49.
  • Egypt 2014: Ever-married women age 15-49.
  • Eswatini (Swaziland) 2006: All women age 15-49.
  • Ethiopia 2000: All women age 15-49.
  • Ethiopia 2005: All women age 15-49.
  • Ethiopia 2011: All women age 15-49.
  • Ethiopia 2016: All women age 15-49.
  • Gabon 2000: All women age 15-49.
  • Gabon 2012: All women age 15-49.
  • Gambia 2013: All women age 15-49.
  • Gambia 2019: All women age 15-49.
  • Ghana 1988: All women age 15-49.
  • Ghana 1993: All women age 15-49.
  • Ghana 1998: All women age 15-49.
  • Ghana 2003: All women age 15-49.
  • Ghana 2008: All women age 15-49.
  • Ghana 2014: All women age 15-49.
  • Guinea 1999: All women age 15-49.
  • Guinea 2005: All women age 15-49.
  • Guinea 2012: All women age 15-49.
  • Guinea 2018: All women age 15-49.
  • India 2005: All women age 15-49.
  • India 2015: All women age 15-49.
  • India 2019: All women age 15-49.
  • Kenya 1989: All women age 15-49.
  • Kenya 1993: All women age 15-49.
  • Kenya 1998: All women age 15-49.
  • Kenya 2003: All women age 15-49.
  • Kenya 2008: All women age 15-49.
  • Kenya 2014: All women age 15-49.
  • Lesotho 2004: All women age 15-49.
  • Lesotho 2009: All women age 15-49.
  • Lesotho 2014: All women age 15-49.
  • Liberia 1986: All women age 15-49.
  • Liberia 2007: All women age 15-49.
  • Liberia 2013: All women age 15-49.
  • Liberia 2019: All women age 15-49.
  • Madagascar 1992: All women age 15-49.
  • Madagascar 1997: All women age 15-49.
  • Madagascar 2003: All women age 15-49.
  • Madagascar 2008: All women age 15-49.
  • Madagascar 2021: All women age 15-49.
  • Malawi 2000: All women age 15-49.
  • Malawi 2004: All women age 15-49.
  • Malawi 2010: All women age 15-49.
  • Malawi 2016: All women age 15-49.
  • Mali 1987: All women age 15-49.
  • Mali 1995: All women age 15-49.
  • Mali 2001: All women age 15-49.
  • Mali 2006: All women age 15-49.
  • Mali 2012: All women age 15-49.
  • Mali 2018: All women age 15-49.
  • Mozambique 1997: All women age 15-49.
  • Mozambique 2003: All women age 15-49.
  • Mozambique 2011: All women age 15-49.
  • Myanmar 2015: All women age 15-49.
  • Namibia 1992: All women age 15-49.
  • Namibia 2000: All women age 15-49.
  • Namibia 2006: All women age 15-49.
  • Namibia 2013: All women age 15-64.
  • Nepal 1996: Ever-married women age 15-49 who are currently married.
  • Nepal 2001: Ever-married women age 15-49 who are currently married.
  • Nepal 2006: All women age 15-49.
  • Nepal 2011: All women age 15-49.
  • Nepal 2016: All women age 15-49.
  • Niger 1992: All women age 15-49.
  • Niger 1998: All women age 15-49.
  • Niger 2006: All women age 15-49.
  • Niger 2012: All women age 15-49.
  • Nigeria 1990: All women age 15-49.
  • Nigeria 1999: All women age 15-49.
  • Nigeria 2003: All women age 15-49.
  • Nigeria 2008: All women age 15-49.
  • Nigeria 2013: All women age 15-49.
  • Nigeria 2018: All women age 15-49.
  • Pakistan 2017: Ever-married women age 15-49.
  • Rwanda 1992: All women age 15-49.
  • Rwanda 2000: All women age 15-49.
  • Rwanda 2005: All women age 15-49.
  • Rwanda 2010: All women age 15-49.
  • Rwanda 2014: All women age 15-49.
  • Rwanda 2019: All women age 15-49.
  • Sao Tome 2008: All women age 15-49.
  • Senegal 1992: All women age 15-49.
  • Senegal 1997: All women age 15-49.
  • Senegal 2005: All women age 15-49.
  • Senegal 2010: All women age 15-49.
  • Senegal 2012: All women age 15-49.
  • Senegal 2014: All women age 15-49.
  • Senegal 2015: All women age 15-49.
  • Senegal 2016: All women age 15-49.
  • Senegal 2017: All women age 15-49.
  • Sierra Leone 2008: All women age 15-49.
  • Sierra Leone 2013: All women age 15-49.
  • Sierra Leone 2019: All women age 15-49.
  • South Africa 1998: All women age 15-49.
  • South Africa 2016: All women age 15-49.
  • Tanzania 1991: All women age 15-49.
  • Tanzania 1996: All women age 15-49.
  • Tanzania 1999: All women age 15-49.
  • Tanzania 2004: All women age 15-49.
  • Tanzania 2010: All women age 15-49.
  • Tanzania 2015: All women age 15-49.
  • Togo 1988: All women age 15-49.
  • Togo 1998: All women age 15-49.
  • Togo 2013: All women age 15-49.
  • Uganda 1988: All women age 15-49.
  • Uganda 1995: All women age 15-49.
  • Uganda 2001: All women age 15-49.
  • Uganda 2006: All women age 15-49.
  • Uganda 2011: All women age 15-49.
  • Uganda 2016: All women age 15-49.
  • Zambia 1992: All women age 15-49.
  • Zambia 1996: All women age 15-49.
  • Zambia 2001: All women age 15-49.
  • Zambia 2007: All women age 15-49.
  • Zambia 2013: All women age 15-49.
  • Zambia 2018: All women age 15-49.
  • Zimbabwe 1988: All women age 15-49.
  • Zimbabwe 1994: All women age 15-49.
  • Zimbabwe 1999: All women age 15-49.
  • Zimbabwe 2005: All women age 15-49.
  • Zimbabwe 2010: All women age 15-49.
  • Zimbabwe 2015: All women age 15-49.
  • Afghanistan: 2015-C, 2015-W, 2015-B, 2015-W
  • Angola: 2015-W, 2015-C, 2015-B, 2015-W
  • Bangladesh: 2011-W, 2011-W, 2011-C, 2011-B, 2014-B, 2014-C, 2014-W, 2014-W, 2018-W, 2018-C, 2018-B, 2018-W
  • Benin: 1996-C, 1996-B, 1996-W, 2001-W, 2001-C, 2001-B, 2006-W, 2006-B, 2006-C, 2006-W, 2011-B, 2011-C, 2011-W, 2011-W, 2017-W, 2017-C, 2017-B, 2017-W
  • Burkina Faso: 1993-C, 1993-B, 1993-W, 1998-W, 1998-C, 1998-B, 2003-W, 2003-B, 2003-C, 2003-W, 2010-B, 2010-C, 2010-W, 2010-W
  • Burundi: 1987-W, 1987-C, 1987-B, 2010-W, 2010-W, 2010-B, 2010-C, 2016-C, 2016-B, 2016-W, 2016-W
  • Cameroon: 1991-C, 1991-W, 1991-B, 1998-W, 1998-C, 1998-B, 2004-B, 2004-C, 2004-W, 2011-B, 2011-C, 2011-W, 2018-W, 2018-C, 2018-B
  • Central African Republic: 1995-W, 1995-C, 1995-B
  • Chad: 1996-W, 1996-C, 1996-B, 2004-W, 2004-C, 2004-B, 2014-W, 2014-C, 2014-B
  • Comoros: 1996-W, 1996-C, 1996-B, 2012-W, 2012-C, 2012-B, 2012-W
  • Congo (Democratic Republic): 2007-W, 2007-C, 2007-B, 2013-W, 2013-C, 2013-B
  • Congo Brazzaville: 2005-W, 2005-C, 2005-B, 2011-W, 2011-C, 2011-B
  • Cote d'Ivoire: 1994-W, 1994-C, 1994-B, 1998-W, 1998-C, 1998-B, 2011-W, 2011-C, 2011-B
  • Egypt: 2014-B, 2014-C, 2014-W, 2014-W
  • Eswatini (Swaziland): 2006-W, 2006-C, 2006-B, 2006-W
  • Ethiopia: 2000-W, 2000-C, 2000-B, 2005-W, 2005-W, 2005-B, 2005-C, 2011-C, 2011-B, 2011-W, 2011-W, 2016-W, 2016-B, 2016-C, 2016-W
  • Gabon: 2000-W, 2000-C, 2000-B, 2012-W, 2012-C, 2012-B
  • Gambia: 2013-W, 2013-C, 2013-B, 2013-W, 2019-W, 2019-C, 2019-B
  • Ghana: 1988-W, 1988-C, 1988-B, 1993-W, 1993-B, 1993-C, 1998-C, 1998-B, 1998-W, 2003-C, 2003-W, 2003-W, 2003-B, 2008-B, 2008-W, 2008-W, 2008-C, 2014-W, 2014-W, 2014-B, 2014-C
  • Guinea: 1999-W, 1999-C, 1999-B, 2005-W, 2005-W, 2005-B, 2005-C, 2012-B, 2012-C, 2012-W, 2018-W, 2018-C, 2018-B, 2018-W
  • India: 2005-W, 2005-B, 2005-C, 2005-W, 2015-W, 2015-C, 2015-B, 2015-W, 2019-W, 2019-C, 2019-B
  • Kenya: 1989-C, 1989-W, 1989-B, 1993-W, 1993-C, 1993-B, 1998-W, 1998-B, 1998-C, 1998-W, 2003-B, 2003-C, 2003-W, 2003-W, 2008-C, 2008-B, 2008-W, 2008-W, 2014-W, 2014-W, 2014-B, 2014-C
  • Lesotho: 2004-C, 2004-B, 2004-W, 2009-W, 2009-C, 2009-B, 2009-W, 2014-W, 2014-B, 2014-C, 2014-W
  • Liberia: 1986-W, 1986-C, 1986-B, 2007-W, 2007-B, 2007-C, 2013-B, 2013-C, 2013-W, 2013-W, 2019-W, 2019-B, 2019-C, 2019-W
  • Madagascar: 1992-C, 1992-B, 1992-W, 1997-W, 1997-C, 1997-B, 2003-W, 2003-C, 2003-W, 2003-B, 2008-W, 2008-B, 2008-C, 2008-W, 2021-B, 2021-C, 2021-W
  • Malawi: 2000-W, 2000-W, 2000-B, 2000-C, 2004-B, 2004-W, 2004-W, 2004-C, 2010-C, 2010-W, 2010-B, 2010-W, 2016-W, 2016-B, 2016-C, 2016-W
  • Mali: 1987-W, 1987-C, 1987-B, 1995-W, 1995-B, 1995-C, 2001-C, 2001-B, 2001-W, 2001-W, 2006-C, 2006-B, 2006-W, 2006-W, 2012-C, 2012-W, 2012-W, 2012-B, 2018-W, 2018-C, 2018-B, 2018-W
  • Mozambique: 1997-W, 1997-C, 1997-B, 2003-W, 2003-W, 2003-B, 2003-C, 2011-B, 2011-C, 2011-W, 2011-W
  • Myanmar: 2015-C, 2015-W, 2015-B, 2015-W
  • Namibia: 1992-C, 1992-B, 1992-W, 2000-W, 2000-C, 2000-B, 2006-B, 2006-W, 2006-C, 2006-W, 2013-B, 2013-C, 2013-W, 2013-W
  • Nepal: 1996-C, 1996-W, 1996-B, 2001-W, 2001-B, 2001-C, 2006-C, 2006-B, 2006-W, 2006-W, 2011-C, 2011-B, 2011-W, 2011-W, 2016-W, 2016-B, 2016-C, 2016-W
  • Niger: 1992-W, 1992-C, 1992-B, 1998-W, 1998-B, 1998-C, 2006-B, 2006-C, 2006-W, 2006-W, 2012-C, 2012-B, 2012-W, 2012-W
  • Nigeria: 1990-C, 1990-W, 1990-B, 1999-W, 1999-C, 1999-B, 2003-W, 2003-C, 2003-B, 2008-W, 2008-B, 2008-W, 2008-C, 2013-W, 2013-W, 2013-C, 2013-B, 2018-W, 2018-B, 2018-C, 2018-W
  • Pakistan: 2017-W, 2017-C, 2017-B, 2017-W
  • Rwanda: 1992-C, 1992-W, 1992-B, 2000-W, 2000-W, 2000-C, 2000-B, 2005-W, 2005-W, 2005-B, 2005-C, 2010-W, 2010-W, 2010-C, 2010-B, 2014-W, 2014-C, 2014-W, 2014-B, 2019-B, 2019-C, 2019-W
  • Sao Tome: 2008-W, 2008-C, 2008-B
  • Senegal: 1992-W, 1992-B, 1992-C, 1997-C, 1997-W, 1997-B, 2005-B, 2005-W, 2005-W, 2005-C, 2010-C, 2010-W, 2010-B, 2010-W, 2012-W, 2012-B, 2012-C, 2012-W, 2014-W, 2014-W, 2014-C, 2014-B, 2015-W, 2015-C, 2015-B, 2015-W, 2016-B, 2016-C, 2016-W, 2016-W, 2017-W, 2017-B, 2017-C, 2017-W
  • Sierra Leone: 2008-C, 2008-B, 2008-W, 2008-W, 2013-W, 2013-C, 2013-B, 2013-W, 2019-B, 2019-W, 2019-C, 2019-W
  • South Africa: 1998-W, 1998-C, 1998-B, 2016-W, 2016-C, 2016-B, 2016-W
  • Tanzania: 1991-W, 1991-C, 1991-B, 1996-W, 1996-B, 1996-C, 1999-C, 1999-B, 1999-W, 2004-C, 2004-B, 2004-W, 2004-W, 2010-W, 2010-C, 2010-W, 2010-B, 2015-B, 2015-C, 2015-W, 2015-W
  • Togo: 1988-W, 1988-C, 1988-B, 1998-W, 1998-C, 1998-B, 2013-W, 2013-C, 2013-B
  • Uganda: 1988-W, 1988-C, 1988-B, 1995-W, 1995-C, 1995-B, 2001-W, 2001-B, 2001-C, 2001-W, 2006-B, 2006-C, 2006-W, 2006-W, 2011-C, 2011-B, 2011-W, 2011-W, 2016-W, 2016-W, 2016-B, 2016-C
  • Zambia: 1992-C, 1992-W, 1992-B, 1996-W, 1996-C, 1996-B, 2001-B, 2001-W, 2001-C, 2007-B, 2007-W, 2007-W, 2007-C, 2013-W, 2013-B, 2013-C, 2013-W, 2018-W, 2018-C, 2018-B, 2018-W
  • Zimbabwe: 1988-W, 1988-C, 1988-B, 1994-W, 1994-W, 1994-B, 1994-C, 1999-C, 1999-B, 1999-W, 1999-W, 2005-C, 2005-B, 2005-W, 2005-W, 2010-C, 2010-W, 2010-W, 2010-B, 2015-W, 2015-B, 2015-C, 2015-W