Value | Category | Cases | |
---|---|---|---|
1 | dont know | 3 |
4.2%
|
2 | months | 27 |
38%
|
3 | years | 41 |
57.7%
|
7 | refused | 0 |
0%
|
9 | missing | 0 |
0%
|
Sysmiss | 5820 |