A cohort study of benzene exposure and cancer was conducted in a tire manufacturing company.
- There were a total of 1,250 people working for the company.
- 540 of the employees were exposed to benzene as a part of their daily job duties.
- 710 employees were not exposed to benzene during their job duties.
- 52 of the employees exposed to benzene developed cancer
- 16 of the employees not exposed to benzene developed cancer