| Value | Category | Cases | |
|---|---|---|---|
| -9 | REFUSED | 1 |
0.5%
|
| -7 | DON'T KNOW | 16 |
8.5%
|
| 1 | DAILY | 135 |
71.4%
|
| 2 | WEEKLY | 18 |
9.5%
|
| 3 | MONTHLY | 9 |
4.8%
|
| 4 | LESS THAN MONTHLY | 10 |
5.3%
|
| Sysmiss | 6122 |