| Value | Category | Cases | |
|---|---|---|---|
| -9 | Missing Data | 7 |
0.2%
|
| 1 | Have now | 17 |
0.4%
|
| 2 | Had in past | 21 |
0.5%
|
| 3 | Never had | 3950 |
98.9%
|
| Sysmiss | 5 |