Table 2.

Frequency of X chromosome and chromosome 1 breaks by host characteristics among cases and controls

VariableX chromosome
Chromosome 1
Cases (n = 61)
Controls (n = 65)
Cases (n = 61)
Controls (n = 65)
Mean ± SEMean ± SEP*Mean ± SEMean ± SEP*
Total breaks2.41 ± 0.260.62 ± 0.08<0.0011.95 ± 0.241.09 ± 0.160.001
Age (y)
    ≤602.44 ± 0.400.71 ± 0.12<0.0011.79 ± 0.291.15 ± 0.250.05
    >602.39 ± 0.350.52 ± 0.12<0.0012.06 ± 0.361.03 ± 0.210.008
Smoking
    Ever2.48 ± 0.320.66 ± 0.12<0.0012.00 ± 0.330.84 ± 0.180.001
    Never2.26 ± 0.450.64 ± 0.140.0011.84 ± 0.321.45 ± 0.300.24
Family history of prostate cancer
    Yes2.17 ± 0.640.58 ± 0.150.021.83 ± 0.440.83 ± 0.350.08
    No2.47 ± 0.280.62 ± 0.10<0.0011.98 ± 0.291.15 ± 0.180.006
  • * Comparison between cases and controls.

  • In first-degree relative.