From: Osteopontin, asbestos exposure and pleural plaques: a cross-sectional study
Predictor variables § | Univariable analysis | Multivariable analysis | |||||||
---|---|---|---|---|---|---|---|---|---|
 |  |  |  | Model 1 @ | Model 2 # | ||||
 | b | SE(b) | p-value | b | SE(b) | p-value | b | SE(b) | p-value |
Age (years) | 0.94 | 0.21 | 0.000 | Â | Â | Â | 0.19 | 0.33 | 0.570 |
Time since last exposure (years) | 0.83 | 0.22 | 0.000 | 1.13 | 0.23 | 0.000 | 0.98 | 0.35 | 0.005 |
Time since first exposure (years) | 0.99 | 0.20 | 0.000 | Â | Â | Â | Â | Â | Â |
Length of exposure (years) | 0.37 | 0.21 | 0.090 | 0.77 | 0.22 | 0.000 | 0.68 | 0.27 | 0.014 |
Cumulative exposure (ff/ml) × years | 0.03 | 0.01 | 0.009 |  |  |  |  |  |  |
Peak exposure (ff/ml) | 0.03 | 0.02 | 0.150 | Â | Â | Â | Â | Â | Â |
Smoking classes | - 0.77 | 2.36 | 0.746 | Â | Â | Â | Â | Â | Â |