| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1.Per day | 2 |
0.2%
|
| 2 | 2.Per Month | 89 |
9.8%
|
| 3 | 3.Per semester | 85 |
9.3%
|
| 4 | 4.Per Academic year | 116 |
12.7%
|
| 5 | 5.Per one school period | 80 |
8.8%
|
| 6 | 6.Not Applicable | 537 |
58.9%
|
| 9 | 9.Missing | 3 |
0.3%
|
| Sysmiss | 5457 |