| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. ______ month | 2853 |
98.2%
|
| 6 | 35 |
1.2%
|
|
| 8 | 8. Don't know | 15 |
0.5%
|
| 9 | 9. Missing | 1 |
0%
|
| Sysmiss | 11327 |