| Value | Category | Cases | |
|---|---|---|---|
| 1 | DAILY | 7 |
0.6%
|
| 2 | LESS THAN DAILY | 55 |
4.8%
|
| 3 | NOT AT ALL | 1082 |
94.5%
|
| 9 | REFUSED | 1 |
0.1%
|
| Sysmiss | 3105 |