| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. yes, mostly | 810 |
80%
|
| 2 | 2. no, i missed a lot of days . | 162 |
16%
|
| 3 | 3. i can’t remember | 37 |
3.7%
|
| 999 | 4 |
0.4%
|
|
| Sysmiss | 3525 |