| Value | Category | Cases | |
|---|---|---|---|
| -9 | Missing Data | 8 |
0.2%
|
| 1 | Have now | 40 |
1%
|
| 2 | Had in past | 38 |
1%
|
| 3 | Never had | 3910 |
97.8%
|
| Sysmiss | 4 |