| Value | Category | Cases | |
|---|---|---|---|
| 1 | DAILY | 2 |
0.1%
|
| 2 | LESS THAN DAILY | 29 |
1.1%
|
| 3 | NOT AT ALL | 2492 |
98.7%
|
| 9 | REFUSED | 1 |
0%
|
| Sysmiss | 71513 |