| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily or almost daily | 8 |
0.3%
|
| 2 | Weekly | 5 |
0.2%
|
| 3 | Monthly | 11 |
0.4%
|
| 4 | Less than monthly | 71 |
2.8%
|
| 5 | Never | 2402 |
96.2%
|
| Sysmiss | 1707 |