Question

Assuming adenoid cases contributed 240 person-months in a 5-year cohort study. There were two deaths in the entire study. The incidence density of death was (A) 125 per 1,000 person-months (B) 8.3 per 100 person-years (C) 0.125 per person-month (D) 0.0083 per person-year.

Answer 1

The incidence density of death can be calculated by dividing the number of deaths by the person-months at risk, in this case, the incidence density of death is 8.33 per 1000 person-months.

Step-by-step explanation:

The incidence density of death can be calculated by dividing the number of deaths by the person-months at risk. In this case, there were 2 deaths in 240 person-months. So, the incidence density of death is:

(2 deaths / 240 person-months) x 1000

Simplifying this calculation gives us an incidence density of death of 8.33 per 1000 person-months. Therefore, the correct answer is (B) 8.3 per 100 person-years.