| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 2909 |
96.4%
|
| 1 | Once | 62 |
2.1%
|
| 2 | Daily | 2 |
0.1%
|
| 3 | Weekly | 0 |
0%
|
| 4 | Monthly | 7 |
0.2%
|
| 5 | Less often than monthly | 39 |
1.3%
|
| 11 | .D | 5 | |
| Sysmiss | 2199 |