Additional file 1: of Head and neck cancer and occupational exposure to leather dust: results from the ICARE study, a French case-control study

Table S1. Formula and weight for calculating the cumulative exposure index (CEI) to leather dust. Table S2. Odds ratios for head and neck cancer associated with occupational exposure to leather dust, stratified by sex. Table S3. Odds ratios for head and neck cancer associated with occupational exposure to leather dust, stratified by tobacco smoking status. Table S4. Odds ratios for head and neck cancer associated with occupational exposure to leather dust, stratified by alcohol drinking status. (DOCX 60 kb)