From: Vomiting in pregnancy is associated with a higher risk of low birth weight: a cohort study
Birth-related Factor | No Nausea or Vomiting | Nausea alone | Vomiting |
---|---|---|---|
n | 286 | 467 | 465 |
Parity (n) | 1.7 (1.6-1.8) | 1.8 (1.7-1.8) | 1.8* (1.8-1.9) |
Birth weight (kg) | 3.512 (3.459, 3.565) | 3.504 (3.474, 3.534) | 3.496 (3.453, 3.540) |
Adjusted birth weight (kg) | 3.494 (3.449, 3.539) | 3.499 (3.474, 3.525) | 3.505 (3.468, 3.541) |
LBW (n/total (%)) | 6/277 (2.2%) | 9/461 (2.0%) | 21/460* (4.6%) |
LBW (OR) | Ref. | 1.0 (0.3-4.0) | 3.5* (1.2-10.8) |
LBW (OR) first trimester nausea or vomiting | 2.1 (0.8-5.7) | 4.3* (1.4-13.2) | |
LBW (OR) second trimester nausea or vomiting | 4.2* (1.7-10.1) | 4.4* (1.4-13.9) | |
LBW (OR) third trimester nausea or vomiting | 1.5 (0.3-6.7) | 0.8 (0.1-7.0) | |
Gestational age at birth (weeks) | 39.9 (39.8, 40.1) | 39.9 (39.8, 40.0) | 39.8 (39.7, 39.9) |
Prematurity (n (%)) | 4 (1.4) | 7 (1.5) | 11 (2.3) |
SGA (n (%)) | 11 (3.9) | 16 (3.5) | 25 (5.2) |
Sex of the baby (n (%) male) | 161 (56.9%) | 236 (51.1%) | 225 (49.9%)* |