Table 1. Maternal, child and partner's characteristics according to maternal educational level, adjusted for gender.

	None/CSE		Vocational		O –level		A-level		Degree		Trend p-value
	n	mean	n	mean	n	mean	n	mean	n	mean
Child characteristics
Gestational age (weeks)	2289	39.8	1128	39.7	3988	39.8	2583	39.7	1485	39.8	0.74
Breastfeeding >1month, n, %	1717	37.9	918	42.4	3524	56.2	2358	73.9	1402	87.9	<0.001
Mother characteristics
Mother's age at delivery (years)	2289	26.9	1128	26.9	3988	27.5	2583	29.5	1485	31.4	<0.001
Number of children	2113	1.13	1068	0.84	3831	0.78	2486	0.74	1450	0.68	<0.001
Maternal height (cm)	2007	162.8	1042	163.2	3766	164.1	2469	164.4	1432	165.8	<0.001
Maternal BMI (kg/m2)	1855	23.5	967	23.3	3575	23.0	2359	22.7	1383	22.1	<0.001
Maternal diet pregnancy at 33 weeks
Energy (kcal/day)	2151	1739.9	1080	1751.0	3858	1774.4	2502	1781.7	1435	1828.8	<0.001
Protein intake (g/day)	2151	60.3	1080	62.9	3858	66.1	2502	68.6	1435	71.7	<0.001
Total fat (g/day)	2151	69.3	1080	70.3	3858	70.7	2502	69.7	1435	70.5	0.26
Saturated fat (g/day)	2151	29.4	1080	29.3	3858	29.1	2502	28.3	1435	28.5	0.001
Polyunsaturated fat (g/day)	2151	11.2	1080	12.2	3858	12.4	2502	13.0	1435	13.7	<0.001
Monounsaturated fat (g/day)	2151	24.5	1080	24.9	3858	24.9	2502	24.5	1435	24.9	0.73
Carbohydrates (g/day)	2151	223.7	1080	220.6	3858	222.1	2502	222.2	1435	227.5	0.23
Ever smoking during pregnancy, n, %	2020	48.7	1010	36.1	3661	26.7	2371	19.1	1405	9.3	<0.001
Partner characteristics
Partner's height (cm)	1252	174.8	682	175.0	2673	176.1	1768	176.5	1135	177.6	<0.001
Paternal BMI (kg/m2)	1228	25.4	676	25.5	2641	25.3	1752	25.1	1132	24.6	<0.001
Partner' smoking, n,%	2076	51.1	1064	45.2	3830	39.7	2503	31.2	1459	20.1	<0.001

BMI: body mass index.