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COHABLASTSTARTCMC
Date started living with current or most recent husband or partner in century month
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COHABLASTSTARTCMC is a 4-digit variable that represents the century-month value (months since 1900) when the woman began living with her current or most recent partner or husband. The following values represent not in universe or missing cases:

9995 = Not interviewed (female questionnaire)
9998 = No response or missing
9999 = NIU (not in universe)

Description

COHABLASTSTARTCMC reports the century month code (CMC) for when the respondent started living with her current or most recent husband or partner.

Note that January is consistently the most common month across samples (see COHABLASTSTARTMO). Due to the data entry format of the survey, if a respondent reported a year but not a month for when she started living with her current or most recent husband or partner, January was the default month.

Enumerators were instructed to enter the date as January 1st, 2020 (January 1st, 2030 for samples in 2019 or after) if the respondent did not give a response to the associated survey question. IPUMS has recoded these cases to "No response or missing."

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 relevant events for PMA2020 occurred during the twentieth or twenty-first centuries. The month of the event is added to the previous result, using the following formula:

CMC = (Year - 1900) * 12 + Month
For example, the CMC for June 2002 is:

CMC = (2002 - 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 - 1 )/12 ) + 1900

[int(x) is the integer part of x]

Month = CMC - ( ( Year - 1900 ) * 12 )

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

The question associated with this variable was included in the female questionnaire.

Comparability

In some samples, enumerators are instructed to confirm the respondent's answer if she reported living with a husband or partner before age 15. See questionnaire text for more details.

Universe

  • Burkina Faso 2014 Round 1 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Burkina Faso 2015 Round 2 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Burkina Faso 2016 Round 4 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Burkina Faso 2016 Round 3 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Burkina Faso 2017 Round 5 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Burkina Faso 2018 Round 6 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Burkina Faso 2020 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Burkina Faso 2021 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Burkina Faso 2022 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Congo Democratic Republic (Kinshasa) 2014 Round 2 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Congo Democratic Republic (Kongo Central) 2015 Round 4 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Congo Democratic Republic (Kinshasa) 2015 Round 4 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Congo Democratic Republic (Kinshasa) 2015 Round 3 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Congo Democratic Republic (Kongo Central) 2016 Round 5 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Congo Democratic Republic (Kinshasa) 2016 Round 5 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Congo Democratic Republic (Kinshasa) 2017 Round 6 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Congo Democratic Republic (Kongo Central) 2017 Round 6 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Congo Democratic Republic (Kongo Central) 2018 Round 7 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Congo Democratic Republic (Kinshasa) 2018 Round 7 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Congo Democratic Republic (Kinshasa) 2019 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Congo Democratic Republic (Kongo Central) 2019 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Congo Democratic Republic (Kinshasa) 2020 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Congo Democratic Republic (Kongo Central) 2020 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Congo Democratic Republic (Kongo Central) 2021 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Congo Democratic Republic (Kinshasa) 2021 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Cote D'Ivoire 2017 Round 1 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Cote D'Ivoire 2018 Round 2 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Cote D'Ivoire 2020 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Cote D'Ivoire 2021 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Cote D'Ivoire 2022 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Ethiopia 2014 Round 1 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Ethiopia 2014 Round 2 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Ethiopia 2015 Round 3 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Ethiopia 2016 Round 4 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Ethiopia 2017 Round 5 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Ethiopia 2018 Round 6 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Ethiopia 2019 PMAET Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Ethiopia 2021 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Ghana 2013 Round 1 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Ghana 2014 Round 2 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Ghana 2014 Round 3 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Ghana 2015 Round 4 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Ghana 2016 Round 5 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Ghana 2017 Round 6 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • India 2016 (Rajasthan) Round 1 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • India 2020 (Rajasthan) Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • India 2021 (Rajasthan) Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • India 2022 (Rajasthan) Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Indonesia 2015 Round 1 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Indonesia 2016 Round 2 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Kenya 2014 Round 2 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Kenya 2014 Round 1 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Kenya 2015 Round 3 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Kenya 2015 Round 4 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Kenya 2016 Round 5 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Kenya 2017 Round 6 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Kenya 2018 Round 7 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Kenya 2019 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Kenya 2020 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Kenya 2021 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Niger 2015 (Niamey) Round 1 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Niger 2016 Round 2 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Niger 2016 (Niamey) Round 3 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Niger 2017 Round 4 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Niger 2018 Round 5 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Niger 2020 Phase 1 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Niger 2022 Phase 2 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Niger 2023 Phase 3 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Nigeria 2014 (Kaduna) Round 1 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Nigeria 2014 (Lagos) Round 1 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Nigeria 2015 (Kaduna) Round 2 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Nigeria 2015 (Lagos) Round 2 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Nigeria 2016 Round 3 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Nigeria 2017 Round 4 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Nigeria 2017 (Oyo) Round 1 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Nigeria 2018 Round 5 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Nigeria 2019 (Kano) Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Nigeria 2019 (Lagos) Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Nigeria (Lagos) 2020 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Nigeria (Kano) 2020 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Nigeria (Kano) 2021 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Nigeria (Lagos) 2021 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Uganda 2014 Round 1 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Uganda 2015 Round 3 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Uganda 2015 Round 2 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Uganda 2020 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Uganda 2021 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).
  • Uganda 2022 Female and Household: Women aged 15-49 who have ever been married (or lived with a man as if married).

Availability

  • Burkina Faso: 2014-2018, 2020-2022
  • Congo (Democratic Republic): 2014-2021
  • Cote d'Ivoire: 2017-2018, 2020-2022
  • Ethiopia: 2014-2019, 2021
  • Ghana: 2013-2017
  • India: 2016, 2020-2022
  • Indonesia: 2015-2016
  • Kenya: 2014-2021
  • Niger: 2015-2018, 2020, 2022-2023
  • Nigeria: 2014-2021
  • Uganda: 2014-2015, 2020-2022