) A researcher recruited 2100 men in his research and followedup every year for 4 years to find out the incidence rate ofrespiratory disease.
After 1 year, there was not a new diagnosis of respiratorydisease, and 100 lost to follow up,
After 2 years, found one new case of respiratory disease and 99lost to follow up,
After 3 years, found 7 new cases of respiratory diseases andseven hundred ninety three lost to follow up.
After 4 years, found eight new cases of respiratory diseases andthree hundred ninety two lost to follow up.
Calculate the incidence rate of respiratorydisease
(**new cases of respiratory disease and men lost tofollow up were disease-free for six months) ** and contribute ½years to the denominator)
