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| Re: Interpretarion row of month of interview [message #22933 is a reply to message #22929] |
Mon, 07 June 2021 09:53  |
Bridgette-DHS
Messages: 3199
Registered: February 2013
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Senior Member |
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Following is a response from DHS Research & Data Analysis Director, Tom Pullum:
You can find a tutorial on the use of the calendar on the DHS website. However, here are some notes I keep, for my own reference, to link a column in the calendar to a century month. v017 and v018 are required to do this.
v017 "cmc start of calendar"
v018 "row of month of interview" [the column in vcal that corresponds with the month of interview]
The calendar is an 80-column record. The first few columns (on the left) are empty.
To convert a column in the calendar to a cmc:
read the calendar from right to left
chronologically the first month is v017 which is column 80
and the last month is the month of interview, which is v008
In general cmc=v017+(80-col) where col is the column of the calendar
and cmc is the cmc for that column
Month before interview is given by mbi=col-v018
For example, if v018=7, then the first column of the calendar that is not empty
is column 7. That is the month of interview and column 8 is mbi=1
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