| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 4221 |
95.6%
|
| 2 | Once | 62 |
1.4%
|
| 3 | Twice | 29 |
0.7%
|
| 4 | 3-5 times | 34 |
0.8%
|
| 5 | 6-10 times | 19 |
0.4%
|
| 6 | 11-20 times | 17 |
0.4%
|
| 7 | More than 20 times | 25 |
0.6%
|
| 8 | Not applicable | 5 |
0.1%
|
| Sysmiss | 5 |