| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 3250 |
91.4%
|
| 2 | 1 or 2 times | 230 |
6.5%
|
| 3 | 3 to 9 times | 44 |
1.2%
|
| 4 | 10 or more times | 31 |
0.9%
|
| Sysmiss | 96 |