Value | Category |
---|---|
0 | |
1 | 1st month of pregnancy |
2 | 2nd month of pregnancy |
3 | 3rd month of pregnancy |
4 | 4th month of pregnancy |
5 | 5th month of pregnancy |
6 | 6th month of pregnancy |
7 | 7th month of pregnancy |
8 | 8th month of pregnancy |
9 | 9th month of pregnancy |
77 | Inap |
88 | Do not know |
99 | No response |