Prenatal exposure to extremely low frequency magnetic field and its impact on fetal growth

Table 3 Relationship between in-utero ELF-MF exposure and skinfold thickness (cm) using GLM

MF measurements		All				Boys				Girls
MF measurements		N	\( \overline{x}\pm \mathrm{s} \)	P	P^#	N	\( \overline{x}\pm \mathrm{s} \)	P	P^#	N	\( \overline{x}\pm \mathrm{s} \)	P	P^#
Abdominal skinfold thicknesses	TWA
	Below median	63	2.8 ± 0.8	0.12	0.09	29	2.6 ± 0.7	0.84	0.86	34	2.9 ± 0.9	0.09	0.02
	Above median	65	2.5 ± 0.6			35	2.5 ± 0.7			30	2.5 ± 0.6
	P50
	Below median	55	2.8 ± 0.9	0.22	0.22	26	2.4 ± 0.7	0.25	0.17	29	3.0 ± 0.9	0.02	0.01
	Above median	73	2.6 ± 0.6			38	2.6 ± 0.6			35	2.5 ± 0.6
	P75
	Below median	62	2.7 ± 0.9	0.23	0.15	26	2.5 ± 0.8	0.46	0.28	36	2.9 ± 0.9	0.06	0.02
	Above median	66	2.6 ± 0.6			38	2.6 ± 0.6			28	2.5 ± 0.6
Triceps skinfold thickness	TWA
	Below median	63	4.4 ± 1.2	0.02	0.02	29	4.2 ± 1.1	0.15	0.09	34	4.5 ± 1.3	0.06	0.04
	Above median	65	3.8 ± 1.1			35	3.8 ± 1.1			30	3.8 ± 1.2
	P50
	Below median	55	4.4 ± 1.2	0.02	0.03	26	4.1 ± 1.1	0.76	0.44	29	4.7 ± 1.3	< 0.01	0.01
	Above median	73	3.9 ± 1.1			38	4.0 ± 1.1			35	3.7 ± 1.1
	P75
	Below median	62	4.3 ± 1.2	0.13	0.09	26	4.0 ± 1.2	0.96	0.69	36	4.5 ± 1.3	0.07	0.07
	Above median	66	3.9 ± 1.1			38	4.0 ± 1.0			28	3.8 ± 1.2
Back skinfold thickness	TWA
	Below median	63	4.4 ± 1.2	< 0.01	< 0.01	29	4.3 ± 1.1	0.02	0.03	34	4.5 ± 1.3	< 0.01	< 0.01
	Above median	65	3.6 ± 0.8			35	3.7 ± 0.9			30	3.6 ± 0.8
	P50
	Below median	55	4.4 ± 1.3	< 0.01	0.01	26	4.2 ± 1.3	0.14	0.21	29	4.5 ± 1.3	< 0.01	< 0.01
	Above median	73	3.8 ± 0.8			38	3.8 ± 0.8			35	3.7 ± 0.8
	P75
	Below median	62	4.3 ± 1.2	< 0.01	0.02	26	4.1 ± 1.3	0.34	0.54	36	4.5 ± 1.2	< 0.01	< 0.01
	Above median	66	3.7 ± 0.8			38	3.9 ± 0.8			28	3.5 ± 0.7

^#Adjusting for family income, gestational age, parity, parental age at childbirth, parental BMI before pregnancy, and maternal passive smoking during pregnancy

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