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1=new medication and 0-standard medicat coded as 1-yes, 0=no. ŷ-53.85-23.54 medication. ŷ-45.51-20.21 medication+14.29 Age65+

1=new medication and 0-standard medicat coded as 1-yes, 0=no. ŷ-53.85-23.54 medication. ŷ-45.51-20.21 medication+14.29 Age65+

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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A clinical trial is conducted to evaluate the efficacy of a new medication to relieve the pain in patients undergoing total knee replacement surgery. In the trial, patients are randomly assigned to receive either the new medication or the standard medication. The data presented are analyzed using multiple linear regression analysis and the models are shown here. In the models, the data are coded as 1=new medication and 0-standard medication, and age 65 and older coded as 1-yes, 0=no. ŷ-53.85-23.54 medication. ŷ 45.51-20.21 medication+14.29 Age65+ +0.78 Medication x Age65+ (1) Write out the regression equations for two groups separately:: Age65+, and age is less than 65. (2) Does it appear that there is effect modification by age? Why?
Transcribed Image Text:A clinical trial is conducted to evaluate the efficacy of a new medication to relieve the pain in patients undergoing total knee replacement surgery. In the trial, patients are randomly assigned to receive either the new medication or the standard medication. The data presented are analyzed using multiple linear regression analysis and the models are shown here. In the models, the data are coded as 1=new medication and 0-standard medication, and age 65 and older coded as 1-yes, 0=no. ŷ-53.85-23.54 medication. ŷ 45.51-20.21 medication+14.29 Age65+ +0.78 Medication x Age65+ (1) Write out the regression equations for two groups separately:: Age65+, and age is less than 65. (2) Does it appear that there is effect modification by age? Why?
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