| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 1963 |
90.7%
|
| 2 | 1 or 2 times | 157 |
7.3%
|
| 3 | 3 to 9 times | 29 |
1.3%
|
| 4 | 10 or more times | 15 |
0.7%
|
| Sysmiss | 2 |