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Interpretarion row of month of interview [message #22929] Sat, 05 June 2021 07:05 Go to next message
shoummosengupta@gmail.com is currently offline  shoummosengupta@gmail.com
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Registered: May 2021
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In the women's individual data of India 2015-16, I observe that the first 5 characters of vcal_1 are blank in all the rows. Can you explain its reason?

Thank you.
Re: Interpretarion row of month of interview [message #22933 is a reply to message #22929] Mon, 07 June 2021 09:53 Go to previous message
Bridgette-DHS is currently offline  Bridgette-DHS
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Registered: February 2013
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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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