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Table 1 Demographics of participants

From: Effects of 60 Hz magnetic fields on teenagers and adults

  Adult Teenager P-value
No. of subjects (n) 30 30 -
Male: female 15 : 15 14 : 16 0.796
Age (yr) 27.9 ± 5.9 14.8 ± 1.4 0.000
Height (cm) 166.4 ± 7.2 166.4 ± 6.9 0.985
Weight (kg) 58.4 ± 7.7 57.0 ± 10.6 0.304
body mass index (kg/m2) 21.0 ± 1.8 20.5 ± 2.8 0.110
Non-smoker: smoker 25 : 5 26 : 4 1.000
Computer usage time (h/d) 6.5 ± 3.9 2.3 ± 1.7 0.000
TV viewing time (h/d) 1.4 ± 1.6 1.9 ± 1.8 0.068
Mobile phone usage periods (yr) 9.9 ± 2.9 4.5 ± 1.9 0.000