Table 3

Mortality results3-151 for mesothelioma among male employees of a petroleum company ever employed in refinery or petrochemical operations by period (1964–94)

PeriodOperating segment
All segments combined Observed/expected SMR (95% CI)Refinery or petrochemical Observed/expected SMR (95% CI)
1964–837/1.906/0.80
3.68 (1.48 to 7.59)3-150 7.50 (2.75 to 16.32)3-150
1984–9417/4.9417/1.86
3.44 (2.00 to 5.51)3-150 9.14 (5.32 to 14.63)3-150
Total period (1964–94)24/6.8323/2.65
3.51 (2.25 to 5.22)3-150 8.68 (5.51 to 13.03)3-150

  • ↵3-150 95% CI does not include 1.00.

  • ↵3-151 Expected deaths based on Canadian general population incidences.