| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 2114 |
85.4%
|
| 2 | Once | 103 |
4.2%
|
| 3 | Twice | 106 |
4.3%
|
| 4 | 3-4 times | 66 |
2.7%
|
| 5 | 5 times or more | 47 |
1.9%
|
| 8 | DO NOT KNOW | 40 |
1.6%
|
| Sysmiss | 42 |