| Value | Category | Cases | |
|---|---|---|---|
| 0 | None | 3897 |
75.9%
|
| 1 | Less than 20 | 1097 |
21.4%
|
| 2 | 21 to 50 | 100 |
1.9%
|
| 3 | 51 to 100 | 29 |
0.6%
|
| 4 | more than 100 | 12 |
0.2%
|
| Sysmiss | 7671 |