| Value | Category | Cases | |
|---|---|---|---|
| -9 | NIU (not in universe) | 7887 |
46.8%
|
| 0 | never | 6540 |
38.8%
|
| 1 | 2203 |
13.1%
|
|
| 2 | 176 |
1%
|
|
| 3 | 25 |
0.1%
|
|
| 4 | 4 |
0%
|
|
| 5 | 7 |
0%
|
|
| 7 | 6 |
0%
|
|
| 95 | case before variable implementation | 0 |
0%
|
| 9999995 | missing:impute | 0 |
0%
|
