Table 1: Baseline characteristics of cases and controls.

Cases ( )Controls ( )Test value

Age in years (mean ± SD)61 ± 9.4057 ± SD 9.34 0.000
Gender
 Male [ (%)]186 (71)183 (69)
 Female [ (%)]76 (29)82 (31) 0.628
Smoking
 Ever/never smokers [ ]117/145120/145 0.919
 Years [mean ± SD]25.92 ± 13.3722.90 ± 12.90 0.078
 Pack years [mean ± SD]21.92 ± 15.9520.99 ± 16.37 0.659
Cumulative asbestos exposure in fibres/cm3-years [mean ± SD]37.67 ± 86.4311.23 ± 23.47 0.000