| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not at all | 47 |
6.1%
|
| 2 | Up to 10 | 233 |
30.1%
|
| 3 | Up to 20 | 259 |
33.5%
|
| 4 | Up to 100 or higher | 234 |
30.3%
|
| Sysmiss | 227 |