| Value | Category | Cases | |
|---|---|---|---|
| 1 | ONCE | 163 |
18.8%
|
| 2 | TWICE | 77 |
8.9%
|
| 3 | THREE TIMES | 47 |
5.4%
|
| 4 | FOUR OR MORE TIMES | 65 |
7.5%
|
| 5 | NONE | 516 |
59.4%
|
| Sysmiss | 635 |