| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
0.7%
|
| 1 | 1-2 indicators | 189 |
28.1%
|
| 2 | 3-9 indicators | 407 |
60.5%
|
| 3 | 10 or more indicators | 72 |
10.7%
|
| Sysmiss | 664 |