Table 6.
Mean difference in birth weight, length, and head circumference for the nausea only (NP) and nausea and vomiting (NVP) groups compared to the symptom-free (SF) groupa
| Crude | Adjustedb | ||||
|---|---|---|---|---|---|
| Outcome | Group | Mean (95 % CI) | P value | Mean (95 % CI) | P value |
| Birth weight (g), n = 51 106 | SF | reference | <0.001 | reference | <0.001 |
| NP | 76.9 (66.0–87.9) | 38.4 (29.2–47.6) | |||
| NVP | 43.9 (32.6–55.4) | 20.9 (11.4–30.5) | |||
| Body length (cm), n = 49 180 | SF | reference | <0.001 | reference | <0.001 |
| NP | 0.20 (0.16–0.25) | 0.11 (0.07–0.15) | |||
| NVP | 0.08 (0.03–0.12) | 0.07 (0.03–0.11) | |||
| Head circumference (cm), | SF | reference | <0.001 | reference | <0.001 |
| n = 50 319 | NP | 0.12 (0.09–0.15) | 0.06 (0.04–0.09) | ||
| NVP | 0.05 (0.01–0.08) | 0.03 (0.00–0.06) | |||
aLinear regression analysis
bAdjusted for age, body mass index, smoking during pregnancy, parity, education, gender, gestational length, and energy intake