| Value | Category | Cases | |
|---|---|---|---|
| 1 | ONCE | 272 |
28.5%
|
| 2 | TWICE | 144 |
15.1%
|
| 3 | THREE TIMES | 40 |
4.2%
|
| 4 | FOUR OR MORE TIMES | 39 |
4.1%
|
| 5 | NONE | 461 |
48.2%
|
| Sysmiss | 3688 |