From one menstrual period to the next, are there certain days when a woman is more likely to get pregnant if she has sexual relations?Comment
; check if the word relations is really properly placed here
Categories
Value
Category
1
Yes
2
No
8
D/K
9
N/A
Sysmiss
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.