From: Breastfeeding in primiparous women with congenital heart disease − a register study
Variable | Univariable logistic regression | Multivariable logistic regression | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Initial model, including n = 492 (85%) | Final model, including n = 531 (92%) | |||||||||||
Wald | OR | 95% CI | p-value | Wald | OR | 95% CI | p-value | Wald | OR | 95% CI | p-value | |
Higher age | 0.1 | 1.0 | 0.9, 1.1 | 0.82 | ||||||||
≤12 years of education | 2.8 | 1.9 | 0.9, 3.9 | 0.094 | 0.6 | 1.4 | 0.6, 3.1 | 0.43 | ||||
Living alone | 0.1 | 1.4 | 0.2, 11.2 | 0.75 | ||||||||
Tobacco use in early pregnancy | 0.1 | 0.8 | 0.1, 6.0 | 0.81 | ||||||||
BMI ≥ 30 | 12.7 | 4.0 | 1.8, 8.7 | < 0.001 | 5.0 | 2.8 | 1.1, 7.1 | 0.026 | 7.2 | 3.1 | 1.4, 7.3 | 0.008 |
Self-reported history of psychiatric illness | 8.6 | 2.8 | 1.4, 5.6 | 0.003 | 4.9 | 2.4 | 1.1, 5.3 | 0.027 | 5.5 | 2.4 | 1.2, 5.1 | 0.019 |
Hypertension prior to pregnancy | 0.0 | 0.0 | 0.0 | 0.99 | ||||||||
Hypothyroidism | 1.3 | 2.1 | 0.6, 7.2 | 0.26 | ||||||||
Pre-eclampsia | 0.8 | 1.7 | 0.5, 6.0 | 0.39 | ||||||||
Induced labour | 0.0 | 1.0 | 0.5, 2.1 | 0.97 | ||||||||
Vacuum extraction/forceps | 0.6 | 0.6 | 0.1, 2.4 | 0.427 | ||||||||
Caesarean section | 0.1 | 1.1 | 0.5, 2.5 | 0.77 | ||||||||
Postpartum haemorrhage > 1000mL | 0.3 | 0.7 | 0.2, 2.5 | 0.61 | ||||||||
Perineal trauma III & IV | 0.0 | 0.8 | 0.1, 6.4 | 0.86 | ||||||||
Preterm birth | 17.0 | 7.5 | 2.9, 19.4 | < 0.001 | 8.7 | 5.7 | 1.8, 18.3 | 0.003 | 10.9 | 6.4 | 2.1, 19.0 | < 0.001 |
SGA | 9.3 | 4.5 | 1.7, 11.9 | 0.002 | 7.9 | 4.7 | 1.6, 14.0 | 0.005 | 6.8 | 4.2 | 1.4, 12.2 | 0.009 |
Moderate & severe complexity | 2.1 | 1.7 | 0.8, 3.3 | 0.15 | ||||||||
NYHA class II-III | 5.1 | 5.1 | 1.2, 21.1 | 0.024 | 5.5 | 5.9 | 1.4, 26.0 | 0.019 | 5.6 | 6.0 | 1.4, 26.7 | 0.019 |
Symptomatic heart disease | 0.1 | 0.8 | 0.2, 3.4 | 0.73 | ||||||||
Cardiovascular medication | 0.2 | 1.3 | 0.4, 4.8 | 0.66 |