| Value | Category | Cases | |
|---|---|---|---|
| 1 | Did not attend | 537 |
56.8%
|
| 2 | Less than 4 months | 196 |
20.7%
|
| 3 | 4-8 months | 88 |
9.3%
|
| 4 | More than 8 months | 125 |
13.2%
|
| Sysmiss | 54 |