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Table 1 Estimated sample size calculations

From: Intervention to Improve Quality of life for African-AmericaN lupus patients (IQAN): study protocol for a randomized controlled trial of a unique a la carte intervention approach to self-management of lupus in African Americans

Estimated sample sizes
Effect size 0.4 0.6 0.7 0.8
Sample size per arm (No drop out) 51 23 18 14
Sample size per arm (10 % drop out) 86 38 28 22
Sample size per arm (15 % drop out) 91 41 30 23