| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not at all | 22 |
4.5%
|
| 2 | Once or twice | 71 |
14.6%
|
| 3 | Three to six times | 145 |
29.8%
|
| 4 | More than six times | 238 |
48.9%
|
| 7 | N/A | 0 |
0%
|
| 8 | DK | 11 |
2.3%
|
| Sysmiss | 25 |