Serum prostate-specific antigen levels and type of work in tire manufacturing workers

This study measures serum prostate-specific antigen (PSA) levels in tire-manufacturing workers, and attempts to find occupational or non-occupational factors that related to their PSA levels. A total of 1,958 healthy male workers (1,699 were production workers and 259 were office workers) took PSA measurement for analysis. After adjusting for age, body mass index, hypertension, regular exercise, alcohol drinking and smoking, which were significantly related to serum PSA levels or known related factors of serum PSA levels, the geometric mean PSA levels were significantly high in the office workers (p = 0.017), the older age group (p