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Table 2 Power calculations

From: Evaluation of exercise on individuals with dementia and their carers: a randomised controlled trial

Control Intervention Difference N (including compensation for 20% attrition)
0.8 0.4 0.4 70 (88)
0.8 0.5 0.3 116 (145)
0.8 0.6 0.2 238 (298)