| Value | Category | Cases | |
|---|---|---|---|
| 1 | First 3 months of pregnancy | 197 |
10.3%
|
| 2 | 3-6 months of pregnancy | 94 |
4.9%
|
| 3 | 6 or more months of pregnancy | 8 |
0.4%
|
| Sysmiss | 1610 |
84.3%
|