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Table 1 The chromium concentration in erythrocytes (μg/l) and DNA damage in exposed and control subjects

From: XRCC1 Arg399Gln was associated with repair capacity for DNA damage induced by occupational chromium exposure

  Exposed subjects n = 149 Control subjects n = 77 P value a
chromium concentration in erythrocytes (μg/l) 4.41 (2.50–5.29) 1.54 (0.61–2.98) <0.001
Olive tail moment 1.13 (0.47–1.45) 0.12 (0.04–0.22) <0.001
Tail Length 11.77 (6.42–14.84) 3.26 (3.00–4.00) <0.001
Tail DNA% 3.69 (2.50–5.29) 0.59 (0.19–1.11) <0.001
  1. 1. Data were presented as median (P25-P75).
  2. 2. P values were calculated with rank sum test between the exposed and control subjects.
  3. 3. Owing to missing detect in DNA damage and genotype, the numbers of subjects in Table 2 were less 157 in exposed group and 93 in control group.