| Value | Category | Cases | |
|---|---|---|---|
| 1 | DAILY | 5 |
0.4%
|
| 2 | LESS THAN DAILY | 116 |
8.8%
|
| 3 | NOT AT ALL | 1198 |
90.8%
|
| 9 | REFUSED | 1 |
0.1%
|
| Sysmiss | 6838 |