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Table 1 Patient number required for MCID in Harris 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 = 7

MCID = 10

Power

80%

90%

80%

90%

SD

    

13

55

73

28

37

15

73

97

36

48

  1. MCID: Minimum clinically important difference