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Re: pregnancy interval in months variable [message #15652 is a reply to message #15637] Mon, 27 August 2018 16:34 Go to previous messageGo to previous message
Liz-DHS
Messages: 1516
Registered: February 2013
Senior Member
A response from Senior Data Processing Expert, Mr. Guillermo Rojas:
Quote:

To calculate the pregnancy interval for that table it is necessary to use the calendar. Essentially from the beginning of the calendar look month by month for a birth "B" or termination "T". Once one of them are found, position in the month before the start of the pregnancy for that birth/termination and count the number of months until another birth or termination is found. In the case of births assume that duration of pregnancy is 9 months. In the case of terminations look for the first character different from a pregnancy "P" after the month where the "T" was found. It is also important to take into consideration the date of the last birth/termination before the beginning of the calendar because that needs to be used to compute the duration for births/terminations that occurred in the last 5 years (59 months), but the previous birth/termination occurred before the calendar.


You may also want to visit the Calendar Tutorial

Thank you!
 
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