| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| -9 | 7 | 7701 |
0.1%
|
|
| 1 | once | 1117 | 2026520 |
16.7%
|
| 2 | twice | 834 | 1505624 |
12.4%
|
| 3 | three or more | 471 | 807920 |
6.7%
|
| 4 | does not apply | 4303 | 7768561 |
64.1%
|
| Sysmiss | 30408 | 58206514 |