| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Per day | 236 |
43.2%
|
| 2 | 2. Per month | 121 |
22.2%
|
| 3 | 3. Per semester | 19 |
3.5%
|
| 4 | 4 Per academic year | 93 |
17%
|
| 5 | 5.Per one school period | 68 |
12.5%
|
| 9 | 9 |
1.6%
|
|
| Sysmiss | 6035 |