| Value | Category | Cases | |
|---|---|---|---|
| 1 | Almost none | 515 |
27.5%
|
| 2 | About 25% | 596 |
31.8%
|
| 3 | About half | 267 |
14.2%
|
| 4 | About 75% | 204 |
10.9%
|
| 5 | All | 291 |
15.5%
|
| 6 | 1 |
0.1%
|
|
| Sysmiss | 418 |