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Birth history index number


This variable is not available for any of the currently selected samples.


BIDX reports the index number of the child in the mother's birth history, from 1 to n, where the nth birth is the mother's first birth, and 1 is the most recently born child. Up to 20 births could be reported by a woman. After asking "Now I would like to record the names of all your births, whether still alive or not, with the first one you had," the interviewer recorded each child's name in turn on successively numbered lines printed in the "Reproduction" section of the individual woman's questionnaire.

Combined with CASEID, BIDX uniquely identifies children within a sample. Combined with IDHSPID, BIDX uniquely identifies children across samples. Using these variables, data users can link IPUMS-DHS data to original DHS child-level and birth-level datasets.


Apart from universe differences, BIDX has no comparability problems.

Comparability - Standard DHS

BIDX is a standard recode variable included in every phase of the standard DHS questionnaire.


No universe descriptions are currently available.
  • Afghanistan: 2015-C, 2015-B
  • Angola: 2015-C, 2015-B
  • Bangladesh: 1994-C, 1997-C, 2000-C, 2004-C, 2007-C, 2011-C, 2014-B, 2014-C
  • Benin: 1996-C, 1996-B, 2001-C, 2001-B, 2006-B, 2006-C, 2011-B, 2011-C, 2017-C, 2017-B
  • Burkina Faso: 1993-C, 1993-B, 1998-B, 1998-C, 2003-B, 2003-C, 2010-B, 2010-C
  • Burundi: 1987-C, 1987-B, 2010-C, 2010-B, 2016-C, 2016-B
  • Cameroon: 1991-C, 1991-B, 1998-B, 1998-C, 2004-B, 2004-C, 2011-C, 2011-B, 2018-C, 2018-B
  • Central African Republic: 1995-C, 1995-B
  • Chad: 1996-C, 1996-B, 2004-C, 2004-B, 2014-C, 2014-B
  • Congo (Democratic Republic): 2007-C, 2007-B, 2013-C, 2013-B
  • Congo Brazzaville: 2005-C, 2011-C
  • Cote d'Ivoire: 1994-C, 1994-B, 1998-C, 1998-B, 2011-C, 2011-B
  • Egypt: 1988-B, 1988-C, 1992-B, 1992-C, 1995-C, 1995-B, 2000-C, 2000-B, 2005-B, 2005-C, 2008-B, 2008-C, 2014-B, 2014-C
  • Eswatini (Swaziland): 2006-C, 2006-B
  • Ethiopia: 2000-C, 2000-B, 2005-B, 2005-C, 2011-C, 2011-B, 2016-B, 2016-C, 2019-C
  • Ghana: 1988-B, 1988-C, 1993-B, 1993-C, 1998-C, 1998-B, 2003-C, 2003-B, 2008-B, 2008-C, 2014-B, 2014-C, 2016-C
  • Guinea: 1999-C, 1999-B, 2005-C, 2005-B, 2012-B, 2012-C, 2018-C, 2018-B
  • India: 1992-C, 1992-B, 1998-B, 1998-C, 2005-C, 2005-B, 2015-C, 2015-B
  • Jordan: 1990-C, 1990-B, 1997-B, 1997-C, 2002-C, 2002-B, 2007-C, 2007-B, 2009-C, 2009-B, 2012-B, 2012-C, 2017-C, 2017-B
  • Kenya: 1989-C, 1989-B, 1993-B, 1993-C, 1998-C, 1998-B, 2003-C, 2003-B, 2008-B, 2008-C, 2014-B, 2014-C
  • Lesotho: 2004-C, 2004-B, 2009-C, 2009-B, 2014-B, 2014-C
  • Liberia: 1986-C, 1986-B, 2007-C, 2007-B, 2013-C, 2013-B
  • Madagascar: 1992-C, 1992-B, 1997-C, 1997-B, 2003-B, 2003-C, 2008-B, 2008-C
  • Malawi: 1992-C, 1992-B, 2000-B, 2000-C, 2004-B, 2004-C, 2010-B, 2010-C, 2016-B, 2016-C
  • Mali: 1987-C, 1987-B, 1995-C, 1995-B, 2001-C, 2001-B, 2006-B, 2006-C, 2012-C, 2012-B, 2018-C, 2018-B
  • Morocco: 1987-C, 1987-B, 1992-C, 1992-B, 2003-C, 2003-B
  • Mozambique: 1997-C, 1997-B, 2003-C, 2003-B, 2011-B, 2011-C
  • Myanmar: 2015-C, 2015-B
  • Namibia: 1992-C, 1992-B, 2000-C, 2000-B, 2006-B, 2006-C, 2013-B, 2013-C
  • Nepal: 1996-C, 1996-B, 2001-B, 2001-C, 2006-C, 2006-B, 2011-C, 2011-B, 2016-B, 2016-C
  • Niger: 1992-C, 1992-B, 1998-B, 1998-C, 2006-B, 2006-C, 2012-B, 2012-C
  • Nigeria: 1990-B, 1990-C, 1999-B, 1999-C, 2003-C, 2003-B, 2008-B, 2008-C, 2013-B, 2013-C, 2018-C, 2018-B
  • Pakistan: 1991-C, 2006-C, 2012-C, 2017-C, 2017-B
  • Rwanda: 1992-C, 1992-B, 2000-C, 2000-B, 2005-B, 2005-C, 2008-C, 2008-B, 2010-B, 2010-C, 2014-B, 2014-C
  • Senegal: 1986-B, 1986-C, 1992-B, 1992-C, 1997-C, 1997-B, 2005-C, 2005-B, 2010-B, 2010-C, 2012-B, 2012-C, 2014-B, 2014-C, 2015-B, 2015-C, 2016-B, 2016-C, 2017-C, 2017-B
  • South Africa: 1998-C, 1998-B, 2016-C, 2016-B
  • Sudan: 1989-C
  • Tanzania: 1991-C, 1991-B, 1996-B, 1996-C, 1999-C, 1999-B, 2004-C, 2004-B, 2010-B, 2010-C, 2015-B, 2015-C
  • Togo: 1988-C, 1988-B, 1998-C, 2013-C, 2013-B
  • Uganda: 1988-C, 1988-B, 1995-C, 1995-B, 2001-B, 2001-C, 2006-B, 2006-C, 2011-C, 2011-B, 2016-C, 2016-B
  • Yemen: 1991-C, 2013-C
  • Zambia: 1992-C, 1992-B, 1996-C, 1996-B, 2001-B, 2001-C, 2007-B, 2007-C, 2013-B, 2013-C, 2018-C, 2018-B
  • Zimbabwe: 1988-C, 1988-B, 1994-B, 1994-C, 1999-C, 1999-B, 2005-C, 2005-B, 2010-C, 2010-B, 2015-B, 2015-C