Table 2

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

MCID = 5

MCID = 7


Power

80%

90%

80%

90%


Sample size

52

69

27

36


MCID: Minimum clinically important difference

Achten et al. BMC Musculoskeletal Disorders 2010 11:8   doi:10.1186/1471-2474-11-8

Open Data