| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily or almost daily | 11 |
0.3%
|
| 2 | Weekly | 28 |
0.9%
|
| 3 | Monthly | 40 |
1.2%
|
| 4 | Less than monthly | 246 |
7.5%
|
| 5 | Never | 2874 |
87.4%
|
| 77 | 68 |
2.1%
|
|
| 88 | 20 |
0.6%
|
|
| Sysmiss | 1122 |