| Value | Category | Cases | |
|---|---|---|---|
| 1 | First 3 months of pregnancy | 1269 |
75.7%
|
| 2 | 3-6 months of pregnancy | 379 |
22.6%
|
| 3 | 6 or more months of pregnancy | 27 |
1.6%
|
| 8 | DK | 1 |
0.1%
|
| 9 | Missing | 1 |
0.1%
|
| Sysmiss | 7922 |