| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 970 |
40.8%
|
| 2 | Once a year | 93 |
3.9%
|
| 3 | Once a semester | 45 |
1.9%
|
| 4 | Once a term | 434 |
18.2%
|
| 5 | Once a month | 417 |
17.5%
|
| 6 | Once a week | 256 |
10.8%
|
| 7 | More than once a week | 77 |
3.2%
|
| 98 | Other | 88 |
3.7%
|
| Sysmiss | 947 |