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Table 1 Baseline characteristics among study participants (N = 278) by age group and by area, Ath, Belgium, 2009

From: Human biomonitoring of heavy metals in the vicinity of non-ferrous metal plants in Ath, Belgium

  Central area Peripheral area Total
Children aged 2.5 to 6 years n = 49 n = 49 n = 98
 Age, yearsa 4.6 (1.4) 4.5 (1.5) 4.6 (1.5)
 Sex, n    
  Male 27 (55 %) 24 (49 %) 51 (52 %)
  Female 22 (45 %) 25 (51 %) 47 (48 %)
 BMI, kg/m2 a 16.0 (2.1) 16.1 (1.2) 16.0 (1.7)
 Higher education of parents, n 43 (88 %) 42 (85 %) 85 (88 %)
 School in the city of Ath, n 36 (78 %) 6 (12 %) 42 (44 %)
 Locally grown vegetables consumption, n 17 (35 %) 33 (67 %) 50 (51 %)
Children aged 7 to 11 years n = 38 n = 36 n = 74
 Age, yearsa 9.4 (1.5) 9.6 (1.5) 9.5 (1.5)
 Sex, n    
  Male 22 (58 %) 20 (56 %) 42 (57 %)
  Female 16 (42 %) 16 (44 %) 32 (43 %)
 BMI, kg/m2 a 17.8 (3.5) 17.4 (2.4) 17.6 (3.0)
 Higher education of parents, n 28 (78 %) 28 (80 %) 56 (79 %)
 School in the city of Ath, n 27 (77 %) 6 (18 %) 33 (48 %)
 Locally grown vegetables consumption, n 19 (50 %) 25 (69 %) 44 (60 %)
Men (40–60 years) n = 27 n = 25 n = 52
 Age, yearsa 52.8 (5.7) 50.3 (6.2) 51.6 (6.0)
 BMI, kg/m2 a 30.9 (3.0) 28.0 (3.4) 31.1 (2.2)
 Higher education, n 14 (52 %) 13 (54 %) 27 (53 %)
 Work in Ath, n 10 (37 %) 6 (25 %) 16 (31 %)
 Locally grown vegetables consumption, n 14 (52 %) 11 (44 %) 25 (48 %)
 Daily consumption of alcohol, n 9 (35 %) 11 (44 %) 20 (39 %)
 Current smokers, n 5 (19 %) 5 (20 %) 10 (20 %)
Women (40–60 years) n = 28 n = 26 n = 54
 Age, yearsa 50.3 (5.7) 51.3 (6.3) 50.8 (6.0)
 BMI, kg/m2 a 28.1 (5.7) 27.4 (7.1) 27.8 (6.3)
 Higher education, n 21 (75 %) 16 (62 %) 37 (69 %)
 Work in Ath, n 16 (59 %) 9 (39 %) 25 (50 %)
 Locally grown vegetables consumption, n 11 (39 %) 20 (77 %) 31 (57 %)
 Daily consumption of alcohol, n 7 (25 %) 9 (35 %) 16 (30 %)
 Current smokers, n 6 (21 %) 4 (15 %) 10 (19 %)
  1. aArithmetic means (standard deviation). BMI body mass index