| Value | Category | Cases | |
|---|---|---|---|
| 0 | No records kept | 84 |
35.9%
|
| 1 | Yes, always | 83 |
35.5%
|
| 2 | Yes, sometimes | 62 |
26.5%
|
| 3 | Someone else keeps records | 5 |
2.1%
|
| Sysmiss | 2958 |