| Value | Category | Cases | |
|---|---|---|---|
| 1 | Several times a term | 45 |
23%
|
| 2 | Once a term | 50 |
25.5%
|
| 3 | Once a year | 14 |
7.1%
|
| 4 | Never | 6 |
3.1%
|
| 5 | missing | 5 |
2.6%
|
| 6 | other | 7 |
3.6%
|
| 7 | refusal | 0 |
0%
|
| 8 | dtk | 0 |
0%
|
| 9 | na | 69 |
35.2%
|