| Value | Category | Cases | |
|---|---|---|---|
| 1 | Months | 141 |
82.9%
|
| 2 | Years | 28 |
16.5%
|
| 98 | Don’t know | 1 |
0.6%
|
| 99 | Refused to answer | 0 |
0%
|
| Sysmiss | 9372 |