| Value | Category | Cases | |
|---|---|---|---|
| 1 | Month 1 to Month 3 | 83 |
28.8%
|
| 2 | Month 4 to Month 6 | 157 |
54.5%
|
| 3 | Month 7 to Month 9 | 39 |
13.5%
|
| 4 | Don't know | 9 |
3.1%
|
| Sysmiss | 1994 |