Table 4 Percentage of patients attaining the WOMAC Pain and Function MCID adjusted for baseline quartile
Sample size (n) and patients attaining MCID | ||||||||
|---|---|---|---|---|---|---|---|---|
Baseline quartiles (range) | MCID | Appropriate | Uncertain | Inappropriate | p-value | |||
n* | Change ≥ MCID n (%) | n* | Change ≥ MCID n (%) | n* | Change ≥ MCID n (%) | |||
Pain | ||||||||
Q1 (least pain) (≤ 40) | 12.4 | 6 | 5 (83.3) | 34 | 20 (58.8) | 43 | 22 (51.1) | |
Q2 (40.1–50) | 25.1 | 13 | 9 (64.3) | 41 | 20 (48.8) | 6 | 2 (33.3) | |
Q3 (50.1–65) | 32.2 | 60 | 37 (61.7) | 7 | 6 (85.7) | 0 | – | |
Q4 (worst pain) (> 65) | 47.9 | 61 | 42 (68.9) | 8 | 3 (37.5) | 1 | 0 (0) | |
Total attaining MCID by quartile | 93 (66.4) | 49 (54.4) | 24 (48.0) | 0.04 | ||||
Function | ||||||||
Q1 (least function) (< 45) | 15.9 | 5 | 2 (40.0) | 29 | 20 (68.9) | 38 | 13 (34.2) | |
Q2 (45–56) | 27.6 | 21 | 11 (52.4) | 41 | 22 (53.7) | 8 | 3 (37.5) | |
Q3 (56.1–72.5) | 37.2 | 55 | 30 (54.5) | 12 | 5 (41.7) | 3 | 1 (33.3) | |
Q4 (worst function) (> 72.5) | 47.5 | 60 | 41 (68.3) | 8 | 3 (37.5) | 1 | 0 (0) | |
Total attaining MCID by quartile | 84 (59.6) | 50 (55.5) | 17 (34.0) | 0.004 | ||||