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DOBCMC (V011)
Respondent's date of birth, in century months

DOBCMC (V011) is a 4-digit variable.

Description

DOBCMC (V011) reports the century month code (CMC) for the woman's date of birth.

Century month codes (CMC) are particularly useful for checking the consistency of dates, calculating intervals between events, and imputing dates when the information for an event is missing or partially complete.

Century month codes (CMC) are calculated by multiplying by 12 the difference between the year of an event and 1900. The year 1900 was chosen as the reference period because all of the DHS-relevant events occurred during the twentieth or twenty-first centuries. The month of the event is added to the previous result.

CMC = (Year minus 1900) * 12 + Month

For example, the CMC for June 2002 is:

CMC = (2002 minus 1900) * 12 + 6 = 1230

In other words, 1,230 months have elapsed between January 1900 and June 2002. Starting with CMC figures, one can calculate the month and year using the following formulas:

Year = int( ( CMC minus 1 )/12 ) + 1900
[int(x) is the integer part of x]
Month = CMC minus ( ( Year minus 1900 ) * 12 )

The information above is based on "Online Guide to DHS Statistics" (Rutstein and Rojas, 2006).

Comparability

Apart from universe differences, DOBCMC (V011) has no comparability problems.

While all samples in DOBCMC use the Gregorian calendar, certain countries use country-specific calendars. These countries (noted below) are excluded from DOBCMC but are included in country-specific variables.

  • Afghanistan uses the Solar Hijri calendar: DOBCMC_AF
  • Ethiopia uses the Ethiopian calendar: DOBCMC_ET
  • Nepal uses Vikram Samvat: DOBCMC_NP
Comparability - Standard DHS

DOBCMC (V011) is a standard recode variable included in every phase of the DHS data.

Universe

  • Angola 2015: All women age 15-49.
  • Bangladesh 1994: Ever-married women age 10-49.
  • Bangladesh 1997: Ever-married women age 10-49.
  • Bangladesh 2000: Ever-married women age 10-49.
  • Bangladesh 2004: Ever-married women age 10-49.
  • Bangladesh 2007: Ever-married women age 15-49.
  • Bangladesh 2011: Ever-married women age 12-49.
  • Bangladesh 2014: 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.
  • 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.
  • Congo (Democratic Republic) 2007: All women age 15-49.
  • Congo (Democratic Republic) 2013: 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 1988: Ever-married women age 15-49.
  • Egypt 1992: Ever-married women age 15-49.
  • Egypt 1995: Ever-married women age 15-49.
  • Egypt 2000: Ever-married women age 15-49.
  • Egypt 2005: Ever-married women age 15-49.
  • Egypt 2008: Ever-married women age 15-49.
  • Egypt 2014: Ever-married 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.
  • India 1992: Ever-married women age 13-49.
  • India 1998: Ever-married women age 15-49.
  • India 2005: All women age 15-49.
  • India 2015: All women age 15-49.
  • Jordan 1990: Ever-married women age 15-49.
  • Jordan 1997: Ever-married women age 15-49.
  • Jordan 2002: Ever-married women age 15-49.
  • Jordan 2007: Ever-married women age 15-49.
  • Jordan 2009: Ever-married women age 15-49.
  • Jordan 2012: Ever-married women age 15-49.
  • Jordan 2017: Ever-married 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.
  • 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.
  • Malawi 1992: 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.
  • Morocco 1987: Ever-married women age 15-49.
  • Morocco 1992: All women age 15-49.
  • Morocco 2003: 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.
  • 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 10-49.
  • Nigeria 2003: All women age 15-49.
  • Nigeria 2008: All women age 15-49.
  • Nigeria 2013: All women age 15-49.
  • Pakistan 1991: Ever-married women age 15-49.
  • Pakistan 2006: Ever-married women age 15-49.
  • Pakistan 2012: Ever-married 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.
  • Senegal 1986: 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.
  • South Africa 1998: All women age 15-49.
  • South Africa 2016: All women age 15-49.
  • Sudan 1989: Ever-married 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.
  • Tunisia 1988: Ever-married 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.
  • Yemen 1991: Ever-married women age 15-54.
  • Yemen 2013: 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.
  • 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.
  • Angola: 2015-W, 2015-C, 2015-B
  • Bangladesh: 1994-C, 1994-B, 1994-W, 1997-C, 1997-B, 1997-W, 2000-C, 2000-B, 2000-W, 2004-C, 2004-B, 2004-W, 2007-C, 2007-B, 2007-W, 2011-C, 2011-B, 2011-W, 2014-W, 2014-C, 2014-B
  • Benin: 1996-W, 1996-C, 1996-B, 2001-W, 2001-C, 2001-B, 2006-W, 2006-C, 2006-B, 2011-W, 2011-C, 2011-B
  • Burkina Faso: 1993-W, 1993-C, 1993-B, 1998-W, 1998-C, 1998-B, 2003-W, 2003-C, 2003-B, 2010-W, 2010-C, 2010-B
  • Burundi: 1987-C, 1987-B, 1987-W, 2010-C, 2010-B, 2010-W, 2016-W, 2016-C, 2016-B
  • Cameroon: 1991-W, 1991-C, 1991-B, 1998-W, 1998-C, 1998-B, 2004-W, 2004-C, 2004-B, 2011-W, 2011-C, 2011-B
  • Congo (Democratic Republic): 2007-C, 2007-B, 2007-W, 2013-W, 2013-C, 2013-B
  • Cote d'Ivoire: 1994-W, 1994-C, 1994-B, 1998-W, 1998-C, 1998-B, 2011-W, 2011-C, 2011-B
  • Egypt: 1988-W, 1988-C, 1988-B, 1992-W, 1992-C, 1992-B, 1995-W, 1995-C, 1995-B, 2000-W, 2000-C, 2000-B, 2005-W, 2005-C, 2005-B, 2008-W, 2008-C, 2008-B, 2014-W, 2014-C, 2014-B
  • Ghana: 1988-W, 1988-C, 1988-B, 1993-W, 1993-C, 1993-B, 1998-W, 1998-C, 1998-B, 2003-W, 2003-C, 2003-B, 2008-W, 2008-C, 2008-B, 2014-W, 2014-C, 2014-B
  • Guinea: 1999-W, 1999-C, 1999-B, 2005-W, 2005-C, 2005-B, 2012-W, 2012-C, 2012-B
  • India: 1992-W, 1992-C, 1992-B, 1998-W, 1998-C, 1998-B, 2005-W, 2005-C, 2005-B, 2015-W, 2015-C, 2015-B
  • Jordan: 1990-W, 1990-C, 1990-B, 1997-W, 1997-C, 1997-B, 2002-W, 2002-C, 2002-B, 2007-W, 2007-C, 2007-B, 2009-W, 2009-C, 2009-B, 2012-W, 2012-C, 2012-B, 2017-W, 2017-C, 2017-B
  • Kenya: 1989-W, 1989-C, 1989-B, 1993-W, 1993-C, 1993-B, 1998-W, 1998-C, 1998-B, 2003-W, 2003-C, 2003-B, 2008-W, 2008-C, 2008-B, 2014-W, 2014-C, 2014-B
  • Lesotho: 2004-W, 2004-C, 2004-B, 2009-W, 2009-C, 2009-B, 2014-W, 2014-C, 2014-B
  • Madagascar: 1992-W, 1992-C, 1992-B, 1997-W, 1997-C, 1997-B, 2003-W, 2003-C, 2003-B, 2008-W, 2008-C, 2008-B
  • Malawi: 1992-W, 1992-C, 1992-B, 2000-W, 2000-C, 2000-B, 2004-W, 2004-C, 2004-B, 2010-W, 2010-C, 2010-B, 2016-W, 2016-C, 2016-B
  • Mali: 1987-W, 1987-C, 1987-B, 1995-W, 1995-C, 1995-B, 2001-W, 2001-C, 2001-B, 2006-W, 2006-C, 2006-B, 2012-W, 2012-C, 2012-B
  • Morocco: 1987-W, 1987-C, 1987-B, 1992-W, 1992-C, 1992-B, 2003-W, 2003-C, 2003-B
  • Mozambique: 1997-W, 1997-C, 1997-B, 2003-W, 2003-C, 2003-B, 2011-W, 2011-C, 2011-B
  • Myanmar: 2015-C, 2015-W, 2015-B
  • Namibia: 1992-W, 1992-C, 1992-B, 2000-W, 2000-C, 2000-B, 2006-W, 2006-C, 2006-B, 2013-W, 2013-C, 2013-B
  • Niger: 1992-W, 1992-C, 1992-B, 1998-W, 1998-C, 1998-B, 2006-W, 2006-C, 2006-B, 2012-W, 2012-C, 2012-B
  • Nigeria: 1990-W, 1990-C, 1990-B, 1999-W, 1999-C, 1999-B, 2003-W, 2003-C, 2003-B, 2008-W, 2008-C, 2008-B, 2013-W, 2013-C, 2013-B
  • Pakistan: 1991-W, 1991-C, 1991-B, 2006-W, 2006-C, 2006-B, 2012-W, 2012-C, 2012-B, 2017-W, 2017-C, 2017-B
  • Rwanda: 1992-W, 1992-C, 1992-B, 2000-W, 2000-C, 2000-B, 2005-B, 2005-W, 2005-C, 2010-B, 2010-W, 2010-C, 2014-W, 2014-C, 2014-B
  • Senegal: 1986-B, 1986-W, 1986-C, 1992-B, 1992-W, 1992-C, 1997-B, 1997-W, 1997-C, 2005-B, 2005-W, 2005-C, 2010-B, 2010-W, 2010-C, 2012-B, 2012-W, 2012-C, 2014-B, 2014-W, 2014-C, 2015-W, 2015-C, 2015-B, 2016-W, 2016-C, 2016-B, 2017-W, 2017-C, 2017-B
  • South Africa: 1998-B, 1998-W, 1998-C, 2016-W, 2016-C, 2016-B
  • Sudan: 1989-B, 1989-W, 1989-C
  • Tanzania: 1991-B, 1991-W, 1991-C, 1996-B, 1996-W, 1996-C, 1999-B, 1999-W, 1999-C, 2004-B, 2004-W, 2004-C, 2010-B, 2010-W, 2010-C, 2015-W, 2015-C, 2015-B
  • Tunisia: 1988-W, 1988-C, 1988-B
  • Uganda: 1988-B, 1988-W, 1988-C, 1995-B, 1995-W, 1995-C, 2001-B, 2001-W, 2001-C, 2006-B, 2006-W, 2006-C, 2011-B, 2011-W, 2011-C, 2016-W, 2016-C, 2016-B
  • Yemen: 1991-B, 1991-W, 1991-C, 2013-B, 2013-W, 2013-C
  • Zambia: 1992-B, 1992-W, 1992-C, 1996-B, 1996-W, 1996-C, 2001-B, 2001-W, 2001-C, 2007-B, 2007-W, 2007-C, 2013-B, 2013-W, 2013-C
  • Zimbabwe: 1988-B, 1988-W, 1988-C, 1994-B, 1994-W, 1994-C, 1999-B, 1999-W, 1999-C, 2005-B, 2005-W, 2005-C, 2010-B, 2010-W, 2010-C, 2015-W, 2015-C, 2015-B