| Value | Category | Cases | |
|---|---|---|---|
| -9 | REFUSED | 6 |
0.4%
|
| 1 | DAILY | 369 |
23%
|
| 2 | WEEKLY | 698 |
43.6%
|
| 3 | MONTHLY | 119 |
7.4%
|
| 4 | LESS THAN MONTHLY | 410 |
25.6%
|
| Sysmiss | 11661 |