| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 2139 |
80.7%
|
| 2 | 1 or 2 times | 380 |
14.3%
|
| 3 | 3 to 9 times | 86 |
3.2%
|
| 4 | 10 or more times | 47 |
1.8%
|
| Sysmiss | 27 |