| Value | Category | Cases | |
|---|---|---|---|
| -9 | Missing Data | 8 |
0.2%
|
| 1 | Have now | 41 |
1%
|
| 2 | Had in past | 26 |
0.7%
|
| 3 | Never had | 3917 |
98.1%
|
| Sysmiss | 8 |