| Value | Category | Cases | |
|---|---|---|---|
| 0 | NO | 1935 |
98.5%
|
| 1 | YES, ONCE OR TWICE | 29 |
1.5%
|
| 2 | YES, THREE TO TEN TIMES | 1 |
0.1%
|
| 3 | YES, MORE THAN 10 TIMES | 0 |
0%
|
| Sysmiss | 297 |