Skip to main content

Table 3 Differences in birth weight and gestational age with 95% confidence intervals according to hospitalisation time-points (N = 71,425*)

From: Hyperemesis gravidarum and pregnancy outcomes in the Norwegian mother and child cohort – a cohort study

 

N = 71,425

Mean

Crude estimate

Adjusted estimate

Adjusted estimate

Adjusted estimate

β (95% CI)

β (95% CI)**

β (95% CI)****

β (95% CI)*****

Birth weight

      

 No hyperemesis (HG)

70654

3602 gram

1

1

1

1

 HG 1. Trimester

484

3591gram

−10.67 (−60.2 – 38.83)

−30.57 (−74.57 – 13.42) ***

−31.55 (−75.42 – 12.32) ***

−15.32 (−58.96 – 28.31) ***

 HG 2. Trimester

173

3506 gram

−95.29 (−178.4 – -12.18)

−85.68 (−155.8 – -15.61) ***

−85.86 (−155.2 – -16.49) ***

−49.15 (−117.8 – 19.49) ***

 HG 1. and 2. trimester

114

3563 gram

−39.02 (−139.9 – 61.83)

−91.20 (−176.9 – -5.48) ***

−92.46 (−178.2 – -6.72) ***

−51.06 (−138.2 – 36.11) ***

Gestational age

      

 No HG

70654

280 days

1

1

1

1

 HG 1. Trimester

484

278 days

−1.29 (−2.31 – -0.28)

−1.12 (−2.15 – -0.10)

−1.05 (−2.07 – -0.03)

−0.79 (−1.80 – 0.23)

 HG 2. trimester

173

278 days

−2.10 (−4.14 – -0.06)

−1.90 (−3.91 – 0.10)

−1.72 (−3.68 – 0.25)

−1.08 (−3.04 – 0.88)

 HG 1. and 2. trimester

114

277 days

−2.56 (−4.89 – -0.24)

−2.39 (−4.70 – -0.08)

−2.22 (−4.53 – 0.09)

−1.57 (−3.89 – 0.75)

  1. * Women with missing data on time-point for hospitalisation were excluded (n = 43).
  2. **Adjusted for maternal age, parity, BMI, education and smoking habits.
  3. ***Additional adjustment for gestational age and induction.
  4. ****Additional adjustment for asthma, diabetes 1, thyroid disease, depression, anxiety, other psychological problems, anorexia, anaemia and vitamin B12 deficiency.
  5. *****Adjustment for maternal weight gain.