TABLE 3.

BMI in childhood according to number of early-life risk factors

	BMI at 4 y1 (SD)			BMI at 6 y1 (SD)
Number of early-life risk factors	n	β (95% CI)	P value2	n	β (95% CI)	P value2
0	116	0 (—)	—	109	0 (—)	—
1	233	−0.02 (−0.23, 0.20)	0.89	251	0.05 (−0.16, 0.27)	0.63
2	200	0.21 (−0.02, 0.43)	0.07	224	0.28 (0.06, 0.50)	0.01
3	102	0.54 (0.27, 0.81)	<0.001	119	0.55 (0.30, 0.81)	<0.001
4 or 5	37	0.79 (0.42, 1.16)	<0.001	46	1.16 (0.82, 1.50)	<0.001
β-trend3	688	0.20 (0.13, 0.27)	<0.001	749	0.25 (0.19, 0.32)	<0.001

¹Adjusted for child's sex, gestational age at birth, and age at measurement, as well as maternal height, education, parity, and age at child's birth.

²P values were determined by linear regression models of BMI (z score) on risk factor score (zero risk factors as baseline).

³P-trend was determined by linear regression models of BMI (z score) on continuous risk factor score.