Demographic and Health Survey 2017-2018 - IPUMS Subset
Pakistan, 2017 - 2018
National Institute of Population Studies (NIPS) [Pakistan], and ICF., Minnesota Population Center
Created on
May 14, 2020
Last modified
May 14, 2020
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Date of first marriage or cohabitation (CMC) (B_MAR1STCMC)
Data file: PAK2017-B.dat
Overview
Type:
Discrete
Decimal:
0
Width:
4
Range:
-
Format:
Numeric
Questions and instructions
Literal question
710) CHECK 709:
MARRIED/LIVED WITH A MAN ONLY ONCE: a) In what month and year did you start living with your husband?
MARRIED/LIVED WITH A MAN MORE THAN ONCE: b) Now I would like to ask about your first husband. In what month and year did you start living with him?
MONTH _____
DON'T KNOW MONTH 98
YEAR ____ (GO TO 712)
DON'T KNOW YEAR 9998
MARRIED/LIVED WITH A MAN ONLY ONCE: a) In what month and year did you start living with your husband?
MARRIED/LIVED WITH A MAN MORE THAN ONCE: b) Now I would like to ask about your first husband. In what month and year did you start living with him?
MONTH _____
DON'T KNOW MONTH 98
YEAR ____ (GO TO 712)
DON'T KNOW YEAR 9998
Categories
| Value | Category |
|---|---|
| 9996 | Not consummated |
| 9997 | Don't know |
| 9998 | Missing |
| 9999 | NIU (not in universe) |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.
Description
Definition
MAR1STCMC (V509) reports the century month code (CMC) for the date of the woman's first marriage or cohabitation.
Century month codes (CMC) are particularly useful 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 - 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) [URL omitted from DDI.].
Century month codes (CMC) are particularly useful 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 - 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) [URL omitted from DDI.].
concept
Concept
| var_concept.title | Vocabulary |
|---|---|
| Marriage and cohabitation Variables -- TOPICS | IPUMS |