| Value | Category | Cases | |
|---|---|---|---|
| 1 | Almost none | 66 |
62.3%
|
| 2 | 1/4 | 31 |
29.2%
|
| 3 | 1/2 | 3 |
2.8%
|
| 4 | 3/4 | 1 |
0.9%
|
| 5 | Almost all | 5 |
4.7%
|
| Sysmiss | 166 |