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Occup Environ Med 58:722-727 doi:10.1136/oem.58.11.722
  • Paper

Are occupational, hobby, or lifestyle exposures associated with Philadelphia chromosome positive chronic myeloid leukaemia?

Table 3

Categorical analysis of the effect of duration of exposure, irrespective of intensity, to organic solvents and extremely low frequency magnetic fields, assessed for each subject individually, on the risk for Ph+CML

Exposure and duration Cases (n) Controls (n) OR 95% CI
Organic solvents (y):3-150
 Zero 146 175 1.0
 1–7 9 13 0.88 0.34 to 2.3
 8–14 11 13 1.0 0.41 to 2.3
 15–20 35 25 2.1 1.1 to 4.0
 Uncertain 25 25 1.2 0.65 to 2.1
Electromagnetic fields (y):3-151
 Zero 151 182 1.0
 1–7 10 13 1.1 0.44 to 2.6
 8–14 10 14 0.83 0.33 to 2.1
 15–20 35 22 2.3 1.2 to 4.5
 Uncertain 20 20 1.4 0.71 to 2.7

  • ↵3-150 Subjects with both hobby and occupational exposure were classified according to the exposure of longest duration.

  • ↵3-151 Only occupational exposure was assessed.

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