| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not at all | 65 |
7.8%
|
| 2 | Up to 10 | 227 |
27.2%
|
| 3 | Up to 20 | 261 |
31.3%
|
| 4 | Up to 100 or higher | 281 |
33.7%
|
| Sysmiss | 166 |