Table 3 Mean and standard deviation of age and asbestos exposure variables at the time of diagnosis/interview for ever exposed males
From: On the proportional hazards model for occupational and environmental case-control analyses
Characteristics | Cases | Controls |
|---|---|---|
(n = 1 041) | (n = 1 425) | |
Age at diagnosis / interview (years) | 67.0 (10.0) | 65.9 (6.3) |
Year of birth | 1 931.1 (10.0) | 1 931.0 (9.3) |
Age at first exposure (years) | 21.0 (7.1) | 22.6 (8.1) |
Mean exposure intensity over lifetime (fibers/ml) (a) | 0.62 (1.43) | 0.21 (0.44) |
Total exposure duration (years) | 27.8 (12.9) | 25.0 (14.1) |
Time since last exposure (years) | 16.9 (13.4) | 17.4 (14.6) |