| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 19026 |
99%
|
| 1 | Often | 29 |
0.2%
|
| 2 | Sometimes | 94 |
0.5%
|
| 3 | Not at all | 67 |
0.3%
|
| 4 | Yes, widow/frequency missing | 11 |
0.1%
|
| 9 | Missing | 162 | |
| Sysmiss | 15207 |