In: Statistics and Probability
Suppose we have 30-day follow-up data on 350 ischemic stroke patients and want to investigate whether the risk of recurrent stroke and/or death (RD) depends on the type of stroke. You classify patients according to initial stroke type-having a cerebral embolism (CE = 1) or not (CE = 0).
Analysis of Maximum Likelihood Estimates
Standard Wald
Parameter DF Estimate Error Chi-Square Pr>ChiSq
Intercept 1 -2.8034 0.5149 29.639 <0.0001
CE 1 1.8651 0.6479 8.2874 0.0040
Odds Ratio Estimates
Point 95% Wald
Effect Estimate Confidence Limits
CE 6.457 1.814 22.986
a) What is the risk of RD for CE patients?
b) What is the risk of RD for non-CE patients?
c) Is the risk of RD the same for CE and non-CE patients? Estimate the relative risk of RD.