| Value | Category | Cases | |
|---|---|---|---|
| 1 | < 1 | 335 |
9.7%
|
| 2 | 1-2 | 1176 |
34.2%
|
| 3 | 3-4 | 573 |
16.7%
|
| 4 | 5+ | 1154 |
33.6%
|
| 9 | Not stated | 200 |
5.8%
|
| Sysmiss | 40120 |