How many subjects are needed to show an increase in biomarker concentration in disease group compared to control group if differences of less than 1 sigma are not considered significant. Assume he required level of significance is 5% and the required power of the test is 90%. f the control group measurements are already available from 140 subjects what is the disease ample size that is needed.

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ISBN:9780134753119
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Chapter1: Combinatorial Analysis
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How many subjects are needed to show an increase in biomarker concentration in disease group
compared to control group if differences of less than 1 sigma are not considered significant. Assume
the required level of significance is 5% and the required power of the test is 90%.
If the control group measurements are already available from 140 subjects what is the disease
sample size that is needed.
Transcribed Image Text:How many subjects are needed to show an increase in biomarker concentration in disease group compared to control group if differences of less than 1 sigma are not considered significant. Assume the required level of significance is 5% and the required power of the test is 90%. If the control group measurements are already available from 140 subjects what is the disease sample size that is needed.
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