| Total | Overall adverse pregnancy outcomes | ||
---|---|---|---|---|
N (%) | N (%) | OR(95%CI) | OR(95%CI)a | |
Pre-pregnancy BMI | ||||
 emaciation | 44 (14.9) | 6 (13.6) | 0.735 (0.289,1.873) | 0.699 (0.247,1.982) |
 normal | 198 (66.2) | 35 (17.7) | 1.000 | 1.000 |
 overweight or obesity | 57 (19.01) | 22 (38.6) | 2.927 (1.534,5.587)* | 2.412 (1.143,5.089)* |
Nutrient supplement before pregnancy | ||||
 short term and small dose | 205 (69.0) | 43 (21.0) | 1.150 (0.314, 4.219) | 0.815 (0.173,3.836) |
 short term but large dose | 12 (4.0) | 2 (16.7) | 0.867 (0.121, 6.215) | 1.402 (0.160,12.25) |
 long term but small dose | 64 (21.6) | 14 (21.9) | 1.213 (0.303, 4.863) | 1.049 (0.206,5.351) |
 long term and large dose | 16 (5.4) | 3 (18.8) | 1.000 | 1.000 |
Nutrient supplement of first trimester | ||||
 short term and small dose | 57 (19.4) | 18 (31.6) | 2.885 (1.262,6.593)* | 2.557 (0.810,8.068) |
 short term but large dose | 37 (12.6) | 6 (16.2) | 1.210 (0.417, 3.511) | 1.496 (0.480,4.664) |
 long term but small dose | 113 (38.5) | 25 (22.1) | 1.776 (0.835, 3.774) | 2.009 (0.672,6.006) |
 long term and large dose | 87 (29.6) | 12 (13.8) | 1.000 | 1.000 |
Types of nutrients | ||||
 pure folic acid | 164 (56.3) | 40 (24.4) | 1.618 (0.904, 2.933) | 1.092 (0.417,2.863) |
 multivitamin with folic acid | 127 (43.7) | 21 (16.5) | 1.000 | 1.000 |