| Value | Category | Cases | |
|---|---|---|---|
| -9 | Missing Data | 2 |
0.1%
|
| 1 | Have and use | 8 |
0.2%
|
| 2 | Have but don't use | 10 |
0.3%
|
| 3 | Had in the past but not now | 21 |
0.5%
|
| 4 | Never | 3951 |
99%
|
| Sysmiss | 8 |