| Value | Category | Cases | |
|---|---|---|---|
| 0 | No records kept | 75 |
32.1%
|
| 1 | Yes, always | 97 |
41.5%
|
| 2 | Yes, sometimes | 58 |
24.8%
|
| 3 | Someone else keeps records | 4 |
1.7%
|
| Sysmiss | 2958 |