Table 2.

The anthropometric measurements of infants of women exposed and non-exposed to SHS stratified by maternal BMI

Anthropometric measurement	BMI	BMI	BMI	P value
	(<18)	(20–29.99)	(30+)
	(n = 21)	(n = 1806)	(n = 1404)
Mean birth weight (kg)
Exposed to SHS	2.67 ± 0.27	3.08 ± 0.49	3.12 ± 0.56	0.67
Non-Exposed SHS	3.04 ± 0.37	3.15 ± 0.44	3.27 ± 0.47	<0.001
Mean length (cm)
Exposed to SHS	47.17 ± 1.94	49.45 ± 2.29	49.63 ± 2.56	0.033
Non-Exposed SHS	49.18 ± 1.88	49.77 ± 2.13	50.05 ± 2.18	0.002
Mean HC (cm)
Exposed to SHS	32.83 ± 0.68	33.99 ± 1.22	34.22 ±1.22	0.001
Non-Exposed SHS	33.88 ±1.10	34.12 ±1.19	34.44 ± 1.28	<0.001

Data expressed as either n (%) or mean ± standard deviation.

SHS = second-hand smoke, BMI = body mass index, HC = head circumference.

Bold figure indicates statistical significance.