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. 2022 Oct 23;34:42. doi: 10.1186/s43019-022-00170-2

Table 5.

MCID values for the PROMs

PROMs Non-PF OA group
average change (%, above MCID)
PF OA group
average change (%, above MCID)
MCID
VAS 2.67 (79.5%) 2.81 (83.1%) 1.99
WOMAC 24.40 (66.3%) 26.89 (70.3%) 22.6
KSS pain 13.04 (92.8%) 17.01 (100%) 3.0
KSS function 20.54 (95.2%) 18.94 (100%) 5.6

PROMs patient-reported outcome measures, MCID minimal clinically important difference using the ROC curve anchor method, VAS visual analog scale, WOMAC Western Ontario and McMaster Universities Osteoarthritis Index, KSS Knee Society score