Table 2

OR and 95% CIs of smoking by cumulative dust exposure, using tercile cut-off points, in the JSC Uralasbest tobacco survey

Cumulative dust exposureSmoking statusOR *95% CI
(mg/m3-years)EverNever
Nrow %Nrow %
Men
 No occupational exposure7068.63231.41.00
 <49.849170.420629.61.010.64 to 1.58
 49.8–97.350267.024733.00.990.62 to 1.54
 >97.333462.819837.20.900.56 to 1.43
 P value non-exposed versus exposed 0.91
 P for trend 0.44
 P for trend in exposed † 0.67
Women
 No occupational exposure103.230596.81.00
 <49.8497.164392.92.111.09 to 4.49
 49.8–97.3487.559192.52.571.33 to 5.47
 >97.3637.479492.62.921.53 to 6.17
 P value non-exposed versus exposed0.006
 P for trend0.002
 P for trend in exposed †0.29
  • *Adjusted for birth year (<1950, 1950–1970, >1970).

  • †Test for homogeneity in ORs among exposed.