| Value |
Category |
| 1 |
January |
| 2 |
February |
| 3 |
March |
| 7 |
July |
| 10 |
October |
| z |
Not applicable |
| d |
Inconsistency set to missing |
| a |
Don't know |
| b |
Refused to answer |
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.