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Table 2 Sample size estimates for the trial

From: The evaluation of a tailored intervention to improve the management of suspected viral encephalitis: protocol for a cluster randomised controlled trial

Number of eligible patients recruited per hospital (M) Proportion meeting the primary outcome criteria under the intervention ( P )
0.15 0.20 0.25
10 0.487 0.707 0.845
15 0.547 0.777 0.907
20 0.590 0.809 0.921
25 0.606 0.832 0.937