| Value | Category | Cases | |
|---|---|---|---|
| 1 | Number of hours | 770 |
32.5%
|
| 2 | Never | 601 |
25.4%
|
| 3 | Do not know (enter 999) | 996 |
42.1%
|
| -999999999 | missing | 0 | |
| Sysmiss | 6107 |