| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 16576 |
86.2%
|
| 1 | Often | 298 |
1.5%
|
| 2 | Sometimes | 1984 |
10.3%
|
| 3 | Not at all | 221 |
1.1%
|
| 4 | Yes, widow/frequency missing | 156 |
0.8%
|
| 9 | Missing | 154 | |
| Sysmiss | 15207 |