| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 721 |
31.3%
|
| 2 | 1 to 2 | 486 |
21.1%
|
| 3 | 3 to 4 | 201 |
8.7%
|
| 4 | 5 to 6 | 116 |
5%
|
| 5 | 7 days | 776 |
33.7%
|
| Sysmiss | 39 |