Value | Category | Cases | |
---|---|---|---|
-9 | NIU (not in universe) | 122 |
5.3%
|
1 | yes, effective at preventing pregnancy | 1985 |
85.7%
|
2 | no, not effective at preventing pregnancy | 185 |
8%
|
98 | don't know | 24 |
1%
|
9999995 | missing:impute | 0 |
0%
|
Sysmiss | 467 |