Question

you conduct a cohort study in which you follow 800 participations, 450 have cholesterol levels over 150 mg/dl (i.e. high cholesterol), and 350 do not have high cholesterol. among those with high cholesterol, 124 developed coronary heart disease (chd); whereas, only 41 without high cholesterol develop chd. there were a total of 165 cases and 635 who did not develop chd. calculate the incidence rate for the total population. in other words, use the very bottom total row only. sometimes, we are given more information than we need to solve a problem. part of that solution is deciding what information is needed. express the rate per 100. do not put your units in the answer box in blackboard. express your answer per 100 people and record the number only, no units! (2 points). add your answer integer, decimal, or e notation allowed

Explanation:

Step1: Identify the formula for incidence rate

Incidence rate per 100 people = $\frac{\text{Number of new cases}}{\text{Total population}} \times 100$

Step2: Substitute the values

Number of new cases = 165, Total population = 800.
So, incidence rate = $\frac{165}{800} \times 100$

Step3: Calculate the value

$\frac{165}{800} \times 100=\frac{16500}{800}=20.625$

Answer:

20.625