| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Day/week/month | 2552 |
85.3%
|
| 6 | 6. Has not been given | 397 |
13.3%
|
| 8 | 8. Don't know | 43 |
1.4%
|
| 9 | 9. Missing | 1 |
0%
|
| Sysmiss | 11238 |