Table 2.
MCID Values From Previous Studies Used for Power Analyses a
| PROM | MCID | Study | Minimum Sample Size per Group |
|---|---|---|---|
| VAS pain | 1.5 | Martin et al (2019) 13 | 35 |
| mHHS | 7.9 | Nwachukwu et al (2018) 15 | 65 |
| SANE | 17.2 b | Lau et al (2019) 11 | 23 |
| VR-12 PCS | 16.0 b | Sugarman et al (2021) 18 | 7 |
| VR-12 MCS | 1.7 b | Sugarman et al (2021) 18 | 611 |
a
MCS, Mental Component Summary; mHHS, modified Harris Hip Score; PCS, Physical Component Summary; PROM, patient-reported outcome measure; SANE, Single Assessment Numeric Evaluation; VAS, visual analog scale; VR-12, Veterans Rand 12-Item Health Survey.
b
Value was derived from mean preoperative to postoperative changes.