| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every day | 275 |
15.1%
|
| 2 | Every week | 40 |
2.2%
|
| 3 | Occasionally | 253 |
13.9%
|
| 4 | Never | 1240 |
68.1%
|
| 6 | 2 |
0.1%
|
|
| 9 | 11 |
0.6%
|
|
| 99 | 1 |
0.1%
|
|
| 0 | NR | 71 | |
| Sysmiss | 1107 |