Association between peritoneal mesothelioma risk and cumulative asbestos exposure (ff/mL-years) in men using restricted cubic splines (knots at 10th, 25th, 50th, 75th and 90th percentiles of cumulative exposure among exposed, log-transformed), Lombardy, Italy, 2000–2015.The dashed line shows the log-linear relationship OR=2.15 per ln(ff/mL-years) (see table 3); vertical bars close to the horizontal axis indicate cases (upper bars) and controls (lower bars). Association between peritoneal mesothelioma risk and cumulative asbestos exposure (ff/mL-years) in men using restricted cubic splines (knots at 10th, 25th, 50th, 75th and 90th percentiles of cumulative exposure among exposed, log-transformed), Lombardy, Italy, 2000–2015.The dashed line shows the log-linear relationship OR=2.15 per ln(ff/mL-years) (see table 3); vertical bars close to the horizontal axis indicate cases (upper bars) and controls (lower bars). Dario Consonni et al. Occup Environ Med 2019;76:545-553 ©2019 by BMJ Publishing Group Ltd