Figure 3.

Sex ratio by toxic occupational exposure to (A) organic solvents, (B) asbestos, and (C) lead. Patients with membranous nephropathy exposed to occupational toxic substances seemed to be more often men than women: organic solvents (80% men in exposed patients versus 41% men in unexposed patients, P<0.001), asbestos (90% men in exposed patients versus 55% men in unexposed patients, P=0.004), and lead (85% men in exposed patients versus 59% men in unexposed patients, P=0.12). Statistical significance was determined by a chi-squared test or a Fisher exact test according to patient sample size. There were no missing data.