(b) Analysis of categorical variables as predictors for overweight at 4 years of age: results of a stepwise multiple logistic regression analysis for the model overweight (including the obese) = dichotomised CHC and birth BMI.

Overweight (including the obese)
	Stepwise logistic regression analysis
	OR	95% CI	P-value
CHC-dA = 2 CHC-dB = 1	2.6	1.2–5.8	.02
Birth weight	—	—	—
Birth length	—	—	—
Birth BMI**	1.9	1.1–3.6	.03
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*included in multiple linear regression model OR: Odds Ratio CI: Confidence Intervals **Birth BMI: Dichotomised at the median (13.6 kg/m²)