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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

From: Pregnancy complications and birth outcomes among women experiencing nausea only or nausea and vomiting during pregnancy in the Norwegian Mother and Child Cohort Study

 

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)

 
  1. aLinear regression analysis
  2. bAdjusted for age, body mass index, smoking during pregnancy, parity, education, gender, gestational length, and energy intake