| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.5%
|
| 1 | 1-2 indicators | 83 |
40.3%
|
| 2 | 3-9 indicators | 63 |
30.6%
|
| 3 | 10 or more indicators | 59 |
28.6%
|
| Sysmiss | 554 |