Table 3.
Differences in birth weight and gestational age with 95% confidence intervals according to hospitalisation time-points (N = 71,425*)
| 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) |
* Women with missing data on time-point for hospitalisation were excluded (n = 43).
**Adjusted for maternal age, parity, BMI, education and smoking habits.
***Additional adjustment for gestational age and induction.
****Additional adjustment for asthma, diabetes 1, thyroid disease, depression, anxiety, other psychological problems, anorexia, anaemia and vitamin B12 deficiency.
*****Adjustment for maternal weight gain.