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Table 2 Patient number required for minimum MCID in Oxford Hip Score at different power levels.

From: A randomised controlled trial of total hip arthroplasty versus resurfacing arthroplasty in the treatment of young patients with arthritis of the hip joint

 

MCID = 5

MCID = 7

Power

80%

90%

80%

90%

Sample size

52

69

27

36

  1. MCID: Minimum clinically important difference
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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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