Eric is conducting a 4 year prospective cohort study investigating COPD (Chronic Obstructive Pulmonary Disease) composed of 100 people. In the first year, there were 0 cases and 0 that were lost to follow up. However, in the second year, 15 people were lost to follow-up and 3 were diagnosed with COPD. In the third year, 13 people were lost to follow-up and 8 people were diagnosed with COPD. In year 4, 27 people were lost to follow-up and 12 people were diagnosed with COPD. What is the incidence rate of this
study?
1) 0.16 cases per person/year
2) 0.37 cases per person/year
3) 0.08 cases per person/year
4) 0.12 cases per person/year