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Table 1 Sample size scenarios

From: Evaluating the safety, effectiveness and acceptability of treatment of incomplete second-trimester abortion using misoprostol provided by midwives compared with physicians: study protocol for a randomized controlled equivalence trial

δ (%) Power = 80% Power = 90%
4 884 (1768) 1183 (2366)
5 566 (1132) 757 (1514)