| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 2760 |
91.4%
|
| 1 | Once | 128 |
4.2%
|
| 2 | Daily | 4 |
0.1%
|
| 3 | Weekly | 10 |
0.3%
|
| 4 | Monthly | 26 |
0.9%
|
| 5 | Less often than monthly | 92 |
3%
|
| 11 | .D | 4 | |
| Sysmiss | 2199 |