Question

In a hypothetical study, 200 obese individuals were compared to 200 non-obese individuals regarding their consumption of at least two servings of vegetables a day. Of the obese individuals, 95 reported they do eat at least two servings a day. Of the non-obese individuals, 135 reported eating at least two servings of vegetables a day.
1. What type of study is being described above?
2. Create the corresponding data table to show the results of this study.
3. Calculate the appropriate measure of association for this data. Show your work.
4. Interpret your results. What does this measure of association tell you about the development of disease?

Answer 1

Answer:

Case control study ; 0.436 ; Those who consume above 2 servings of vegetable are less prone to obesity than those who consume less.

Explanation:

The study is a case control study which is aimed at observing differences in two different groups as to how they respond or affected by a certain variable.

Obese

sample = 200

Atleast 2 servings of vegetables per day = 95

Non - obese

sample = 200

Atleast 2 servings of vegetables per day = 135

______________obese _______Non obese

≥ 2 veg serving__ 95 __________105

< 2 veg serving _ 135__________ 65

Odds exposure - 0.704 ________ 1.615

Odd exposure :

95/135 = 0.7037037

105 / 65 = 1.6153846

Odds ratio : 0.704 / 1.615 = 0.436

Those who consume above 2 servings of vegetable are less prone to obesity than those who consume less.