9. In 1989, there were 1,000 South Asian immigrants who worked in a cement factory. The incidence of asbestosis in these people up to 2010 was compared with that of 1,000 South Asians who worked as telephone operators in 1989. Twenty of the cement factory workers and five of the telephone operators developed asbestosis between 1989 and 2010. What type of study design described?
Answers
Answered by
7
Answer:
MATE SORRY DON`T KNOW YOU SHOULD ASK IT ON GOOGLE
Explanation:
Similar questions