| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Month/year | 6156 |
98.8%
|
| 6 | 6. NOT APPLICABLE | 54 |
0.9%
|
| 8 | 8. Don't know | 18 |
0.3%
|
| 9 | 9. Missing | 0 |
0%
|
| Sysmiss | 11096 |