Question

A rural community in Queensland was estimated to have a population of 73,000 during a census conducted on January 1^st, 2018. Of these, 3600 people were known to have been diagnosed with type 2 diabetes before this day. During 2018, the entire community was followed, and 230 new cases of type 2 diabetes were diagnosed.

-What was the cumulative incidence of type II diabetes in this community during 2018?

If during 2018 5,000 people from the entire community either died or left the area to a different state and assume that these people and the cases of diabetes were healthy at least half of the year.

-Calculate the incidence rate

Answer 1

Total population at risk = 73000

New cases of Diabetics = 230

Cumulative incidence during 2018 = New case of Diabetics / Total Population at risk = 230 / 73000 = 0.00315 = 3.15 per 1000 cases.

In 2018, in a span of one year, there were 5000 people , who died or left the area .

Now, Total Population at risk = 73000 -  5000 = 68000

Therefore, Incidence Rate = New case of Diabetics / Total Population at risk = 230 / 68000 = 0.00338 = 3.38 per 1000 people

Hope I answered your query.