From: Osteopontin, asbestos exposure and pleural plaques: a cross-sectional study
Predictor variables § | Without PP (N = 143) | With PP (N = 50) | p-value | ||
---|---|---|---|---|---|
 | b | SE(b) | b | SE(b) |  |
Age (years) | 0.93 | 0.25 | 1.05 | 0.47 | 0.88 |
Time since last exposure (years) | 0.71 | 0.24 | 1.35 | 0.51 | 0.52 |
Time since first exposure (years) | 0.94 | 0.22 | 1.23 | 0.44 | 0.74 |
Length of exposure (years) | 0.45 | 0.23 | - 0.03 | 0.53 | 0.95 |
Cumulative exposure (ff/ml) × years | 0.04 | 0.01 | 0.01 | 0.03 | 0.48 |
Peak exposure (ff/ml) | 0.05 | 0.03 | -0.02 | 0.05 | 0.46 |
Smoking classes | -1.67 | 2.72 | 1.16 | 5.14 | 0.50 |