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Distinguish Statistical from Practical Significance
Grade Level
GRE
109 Distinguish Statistical from Practical Significance
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A medical prediction model improves AUC from 0.842 to 0.843, p < .001, in a database of 5 million records. Which interpretation is most appropriate?
A
The model is clinically superior because the p-value is very small.
B
The improvement is statistically detectable, but its practical value depends on whether the tiny discrimination gain changes decisions or outcomes.
C
The AUC change cannot be statistically significant because it is 0.001.
D
A statistically significant AUC change automatically improves patient care.
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