| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 1674 |
76.5%
|
| 2 | Once | 3 |
0.1%
|
| 3 | Twice | 3 |
0.1%
|
| 4 | 3-5 times | 3 |
0.1%
|
| 5 | 6-10 times | 0 |
0%
|
| 6 | 11-20 times | 0 |
0%
|
| 7 | More than 20 times | 2 |
0.1%
|
| 8 | Not applicable | 497 |
22.7%
|
| Sysmiss | 6 |