| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | once | 277 | 464137 |
82.5%
|
| 2 | twice | 32 | 48624 |
8.6%
|
| 3 | three or more times | 24 | 49492 |
8.8%
|
| Sysmiss | 48853 | 79499128 |