| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 1902 |
95.1%
|
| 2 | 1 or 2 times | 53 |
2.6%
|
| 3 | 3 to 9 times | 27 |
1.3%
|
| 4 | 10 or more times | 19 |
0.9%
|
| Sysmiss | 8 |