| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily or almost daily | 5 |
0.3%
|
| 2 | Weekly | 1 |
0.1%
|
| 3 | Monthly | 6 |
0.3%
|
| 4 | Less than monthly | 36 |
1.9%
|
| 5 | Never | 1873 |
97.4%
|
| 9 | Don't know | 2 |
0.1%
|
| Sysmiss | 1835 |