Sample size determination in clinical research: 2.
In the second of this two-part series, comparative study design is considered and, using examples, power calculation is explained. The information required for calculating sample size for comparative studies is highlighted.
Ogundipe
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Lyme Brook Mental Health Centre, Newcastle.
D003627:Data Interpretation, Statistical; D006801:Humans; D015203:Reproducibility of Results; D012107:Research Design; D018401:Sample Size