| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 3315 |
94.6%
|
| 1 | Once | 87 |
2.5%
|
| 2 | Daily | 3 |
0.1%
|
| 3 | Weekly | 9 |
0.3%
|
| 4 | Monthly | 17 |
0.5%
|
| 5 | Less often than monthly | 74 |
2.1%
|
| 11 | .R | 5 | |
| Sysmiss | 2701 |