Table 6

Odds ratio of cancer risk after dichotomization of CAs into groups higher and lower than the median frequency of controls

Cases (n = 22)Controls (n = 21)Odds ratio95% CI
Chromosome-type CAs
 Gap
  04 (18.2)11 (52.4)1.00
  >0a18 (81.8)10 (47.6)4.500.97–20.82
 Break
  010 (45.5)17 (81.0)1.001.09–22.82b
  >012 (54.5)4 (19.0)5.00
 Exchange
  016 (72.7)19 (90.5)1.000.58–42.80
  >06 (27.3)2 (9.5)5.00
 Break + exchange
  06 (27.3)15 (71.4)1.001.42–85.20b
  >016 (72.7)6 (28.6)11.00
 Total chromosome-type
  ≤1.0075 (22.7)15 (71.4)1.001.56–92.29b
  >1.00717 (77.3)6 (28.6)12.00
Chromatid-type CAs
 Gap
  ≤2.0035 (22.7)10 (47.6)1.000.85–18.84
  >2.00317 (77.3)11 (52.4)4.00
 Break
  ≤1.00315 (68.2)10 (47.6)1.000.19–1.66
  >1.0037 (31.8)11 (52.4)0.56
 Break + exchange
  ≤1.00315 (68.2)10 (47.6)1.000.19–1.66
  >1.0037 (31.8)11 (52.4)0.56
 Total chromatid-type
  ≤3.00910 (40.5)9 (42.9)1.000.29–36.45
  >3.00912 (54.5)12 (57.1)1.00
Total CAs
 ≤4.0235 (22.7)12 (57.1)1.001.14–71.04b
 >4.02317 (77.3)9 (42.9)9.00
Total breaks + exchanges
 ≤1.0036 (27.3)9 (42.9)1.000.58–42.80
 >1.00316 (72.7)12 (57.1)5.00
  • a Median CA frequency of control group.

  • b P < 0.05.