| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. none | 31 |
0.7%
|
| 1 | 1. 1 to 2 | 545 |
12.5%
|
| 2 | 2. 3 to 5 | 1624 |
37.2%
|
| 3 | 3. 6 to 8 | 1475 |
33.8%
|
| 4 | 4. 9 to 10 | 675 |
15.5%
|
| 77 | 77. d/r | 0 |
0%
|
| 99 | 99. miising | 11 |
0.3%
|
| Sysmiss | 177 |