While working with doctors on heart attack patients, we want to predict whether

Question

While working with doctors on heart attack patients, we want to predict whether the patient will have a second heart attack within 1 year (yes = 1), based on two predictor variables: whether the patient completed an anger-control treatment course (yes=1), and the patient's score on a trait anxiety scale (a higher score means more anxious). Data on 20 patients is used to fit the following logistic regression:

Are both AngerTreatment and Anxiety good predictors of whether the patient will have a second heart attack within a year?

Predictor Coef SE Coef Z P Constant -6.36347 3.21390 -1.98 0.048 AngerTrt -1.02411 1.17108 -0.87 0.382 Anxiety 0.119045 0.0549790 2.17 0.030

Explanation / Answer

Sol:

AngerTreatment Pvalue=0.382

p>0.05

AngerTreatment is not significant variable.

Anxiety p value=0.030

p<0.05

Anxiety is significant variable.

A) No - only anxiety is a significant predictor

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