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Table 4 Relationship between in-utero ELF-MF exposure and circumference of head, up arm and abdomen (cm) using GLM

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

MF measurements All Boys Girls
N \( \overline{x}\pm \mathrm{s} \) P P# N \( \overline{x}\pm \mathrm{s} \) P P# N \( \overline{x}\pm \mathrm{s} \) P P#
Head circumference TWA             
Below median 63 35.3 ± 1.2 0.13 0.16 29 35.5 ± 1.2 0.44 0.42 34 35.1 ± 1.1 0.07 0.08
Above median 65 34.9 ± 1.3    35 35.2 ± 1.5    30 34.6 ± 0.9   
P50             
Below median 55 35.3 ± 1.2 0.12 0.06 26 35.5 ± 1.3 0.65 0.18 29 35.2 ± 1.1 0.02 0.02
Above median 73 34.9 ± 1.3    38 35.3 ± 1.5    35 34.5 ± 0.9   
P75             
Below median 62 35.3 ± 1.2 0.18 0.08 26 35.5 ± 1.3 0.53 0.16 36 35.1 ± 1.1 0.04 0.06
Above median 66 34.9 ± 1.3    38 35.3 ± 1.4    28 34.5 ± 0.9   
Upper arm circumference TWA             
Below median 63 11.3 ± 1.2 0.01 0.03 29 11.1 ± 1.1 0.26 0.17 34 11.5 ± 1.4 0.0262 0.05
Above median 65 10.8 ± 0.9    35 10.8 ± 1.1    30 10.8 ± 0.7   
P50             
Below median 55 11.3 ± 1.3 0.03 0.03 26 11.1 ± 1.1 0.54 0.30 29 11.6 ± 1.5 0.0146 0.02
Above median 73 10.9 ± 0.9    38 10.9 ± 1.1    35 10.8 ± 0.6   
P75             
Below median 62 11.3 ± 1.3 0.03 0.02 26 11.1 ± 1.1 0.57 0.26 36 11.5 ± 1.3 0.0200 < 0.05
Above median 66 10.8 ± 0.9    38 10.9 ± 1.1    28 10.8 ± 0.7   
Abdominal circumference TWA             
Below median 63 33.9 ± 2.0 0.10 0.03 29 33.6 ± 2.2 0.87 0.54 34 34.3 ± 1.9 < 0.01 0.03
Above median 65 33.3 ± 1.8    35 33.7 ± 1.9    30 32.9 ± 1.6   
P50             
Below median 55 33.9 ± 2.1 0.24 0.11 26 33.5 ± 2.2 0.72 0.55 29 34.2 ± 2.1 0.03 0.04
Above median 73 33.4 ± 1.8    38 33.7 ± 2.0    35 33.1 ± 1.5   
P75             
Below median 62 33.9 ± 2.0 0.19 < 0.05 26 33.6 ± 2.2 0.86 0.34 36 34.1 ± 1.9 0.03 0.06
Above median 66 33.4 ± 1.8    38 33.7 ± 2.0    28 33.0 ± 1.6   
  1. #Adjusting for family income, gestational age, parity, parental age at childbirth, parental BMI before pregnancy, and maternal passive smoking during pregnancy