Table 1 Maternal characteristics of women in the registry by follow-up status, 2010-2013
Variable | Lost to Follow-up N (%) | Completed Follow-up N (%) | RR (95% CI) |
|---|---|---|---|
Follow-up status, N | 4,893 | 277,733 | Â |
Status at enrollment | Â | Â | Â |
Pregnant | 4,145 (96.1) | 243,397 (87.7) | 2.2 (1.7, 2.8) |
Delivered | 170 (3.9) | 34,206 (12.3) | 1.0 |
Last menstrual period known | Â | Â | Â |
Yes | 3,724 (76.1) | 256,241 (92.3) | 1.0 |
No | 1,169 (23.9) | 21,492 (7.7) | 2.2 (1.1, 4.4) |
Maternal age | Â | Â | Â |
< 20 | 559 (13.0) | 33,024 (11.9) | 1.2 (1.1, 1.3) |
20-35 | 3,532 (82.0) | 233,647 (84.3) | 1.0 |
> 35 | 214 (5.0) | 10,626 (3.8) | 0.8 (0.7, 1.1) |
Education | Â | Â | Â |
No formal education | 2,090 (48.5) | 69,370 (25.1) | 1.2 (1.1, 1.4) |
Primary | 1,283 (29.8) | 103,797 (37.5) | 1.1 (1.0, 1.2) |
Secondary | 772 (17.9) | 83,361 (30.1) | 1.1 (1.0, 1.2) |
University | 162 (3.8) | 19,963 (7.2) | 1.0 |
Parity | Â | Â | Â |
0 | 1,245 (28.9) | 93,460 (33.7) | 1.0 (1.0, 1.1) |
1-2 | 1,631 (37.8) | 117,243 (42.3) | 1.0 |
> 2 | 1,435 (33.3) | 66,217 (23.9) | 0.8 (0.7, 0.9) |
Last pregnancy resulted in a live birth | Â | Â | Â |
Yes | 2,797 (91.3) | 172,183 (93.9) | 1.0 |
No | 268 (8.7) | 11,164 (6.1) | 1.1 (0.9, 1.3) |