Table 1.

Summary statistics, including percentile, mean (SD), geometric mean (SE), and range of physical, social, and demographic characteristics of participants residing in the three recruitment villages

CharacteristicsVillage 6 (n = 90)Village 5 (n = 16)Village 12 (n = 129)
Physical
    Gender (%)
        Male435045
        Female575055
    Mean (SD) age, range (years)32.2 (15.3), 10-7029.8 (17.9), 10-7729.2 (14.2), 7-70
    Mean (SD) body mass index, range19.9 (3.6), 12-2720.9 (4.3), 13-3019.7 (3.7), 14-29
    GSTM1(−) genotype (%)*28.835.762.5
    GSTT1(−) genotype (%)18.96.319.4
Social
    Smokers in same environment (%)22.218.816.3
    Chewing betel nuts (%)38.26.854.9
Demographic
    Geometric mean (SE) drinking water As, range (μg/L)55.2 (35.4), ND-75242.4 (7.4), ND-1381.17 (1.8), ND-32.5
    Geometric mean (SE) toenail As, range (μg/g)0.267 (0.007), 0.034-14.040.988 (0.083), 0.34-4.870.66 (0.020), 0.13-8.97
    Mean (SD) duration of tube well use, range (years)9.1 (7.0), 1-209.6 (7.2), 2-208.6 (4.7), 2-19
    Mean (SD) water volume consumed daily, range (L)3.4 (0.8), 2-53.2 (0.9), 2-53.1 (0.9), 1-5
  • * P = 0.03.

  • P < 0.0001.