A group of Head and Neck specialists are interested in the relationship between
ID: 3248819 • Letter: A
Question
A group of Head and Neck specialists are interested in the relationship between bacterial sinusitis (BS) and a number of negative health outcomes. Suppose the research team gathers information on a group of participants, and constructs a multiple linear regression model looking at the relationship between BS and depression, controlling for age. The following is a computerized output displaying the results of their analysis.
Parameter
Estimate
Standard Error
t Value
Pr > |t|
Intercept
0.2186206635
0.06635040
3.29
0.0010
Age
-.0046496845
0.00221338
-2.10
0.0360
Depression
0.1912412415
0.03151884
6.07
<.0001
A) What are the dependent and independent variables in this investigation? And based on the information above, was the research team justified in controlling for age in this population? Why or why not?
Parameter
Estimate
Standard Error
t Value
Pr > |t|
Intercept
0.2186206635
0.06635040
3.29
0.0010
Age
-.0046496845
0.00221338
-2.10
0.0360
Depression
0.1912412415
0.03151884
6.07
<.0001
Explanation / Answer
The dependent variable: BS
The independent variable: Age, Dipression
The p-value of the age is 0.0360. Since p-value is greater than 0.01 so it is not signficant at 1% level of signficant.
So controlling for age is not significant to the model.
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