Value | Category | Cases | |
---|---|---|---|
1 | month | 8 |
80%
|
2 | year | 2 |
20%
|
77 | refused | 0 |
0%
|
88 | don't know | 0 |
0%
|
99 | missing | 0 |
0%
|
Sysmiss | 4960 |