From: Osteopontin, asbestos exposure and pleural plaques: a cross-sectional study
Key characteristics | Without PP (N = 143) | With PP (N = 50) | p-value | ||
---|---|---|---|---|---|
 | Mean (SD) | Median (25-75 centiles) | Mean (SD) | Median (25-75 centiles) |  |
Osteopontin (ng/ml) | 53.89 (19.57) | 49.53 (42.50-57.64) | 55.25 (20.86) | 50.87 (40.78-66.22) | 0.872 |
Age (years) | 62.90 (6.40) | 61.94 (58.12-67.37) | 65.78 (6.05) | 64.71 (61.86 -68.33) | 0.005 |
Time since last exposure (years) | 13.71 (6.69) | 14 (8 -18) | 15.36 (5.50) | 15.5 (12-20) | 0.067 |
Time since first exposure (years) | 42.20 (6.92) | 42 (37-47) | 45.12 (6.38) | 45 (40-50) | 0.010 |
Length of exposure (years) | 26.24 (6.97) | 27 (22-30) | 27.70 (5.67) | 28 (25 - 29) | 0.170 |
Cumulative exposure (ff/ml) × years | 166.13 (120.2) | 155.53 (44.79-299.2) | 237.52 (102.3) | 298.08 (155.5 -301.1) | 0.001 |
Peak exposure (ff/ml) | 56.49 (59.7) | 13.5 (13.5-135) | 88.32 (60.3) | 135 (13.5 -135) | 0.002 |