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Table 4 Per group sample sizes. 80% power, alpha = 0.01, 2-sided testing

From: Protocol for a multicenter prospective cohort study evaluating sport activity and development of femoroacetabular impingement in the adolescent hip

 FAI risk in non-sports specialists
5%15%25%
FAI risk in sports specialists
 20%12613881668
 30%611931902
 40%3881240
 50%264694