| Value | Category | Cases | |
|---|---|---|---|
| 0 | None | 42 |
47.7%
|
| 1 | 21 |
23.9%
|
|
| 2 | 10 |
11.4%
|
|
| 3 | 6 |
6.8%
|
|
| 4 | 3 |
3.4%
|
|
| 5 | 1 |
1.1%
|
|
| 7 | 1 |
1.1%
|
|
| 10 | 1 |
1.1%
|
|
| 20 | 1 |
1.1%
|
|
| 99 | Missing | 2 |
2.3%
|
| Sysmiss | 1637 |