| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not at all | 71 |
9.2%
|
| 2 | Up to 10 | 246 |
31.8%
|
| 3 | Up to 20 | 245 |
31.7%
|
| 4 | Up to 100 or higher | 211 |
27.3%
|
| Sysmiss | 227 |