Value | Category | Cases | |
---|---|---|---|
1 | 1. Per month | 20 |
50%
|
2 | 2. Per semester | 6 |
15%
|
3 | 3. Per year | 14 |
35%
|
5 | 5. Others | 0 |
0%
|
6 | 6. None | 0 |
0%
|
9 | 9. Missing | 0 |
0%
|
Sysmiss | 299 |