| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 2172 |
97.1%
|
| 2 | 1 or 2 times | 52 |
2.3%
|
| 3 | 3 to 9 times | 7 |
0.3%
|
| 4 | 10 or more times | 6 |
0.3%
|
| Sysmiss | 12 |