Table 1 Characteristics of participants with symptomatic knee OA in each cohort at each time point
From: Comparing the functional impact of knee replacements in two cohorts
MOST study | OAI study | |||||
|---|---|---|---|---|---|---|
Baseline (N = 824) | 30 month (N = 818) | 60 month (N = 765) | Baseline (N = 880) | 24 month (N = 793) | 48 month (N = 762) | |
Age, mean (SD), year | 66.1 (6.4) | 66.6 (6.7) | 67.3 (6.8) | 66.1 (6.7) | 66.3 (6.9) | 66.9 (7.1) |
N (%) of women | 541 (65.7) | 527 (64.4) | 512 (66.9) | 515 (58.5) | 486 (61.3) | 451 (59.2) |
N (%) of race | ||||||
Whites | 679 (82.4) | 672 (82.2) | 631 (82.5) | 633 (71.9) | 627 (79.1) | 604 (79.3) |
Blacks | 137 (16.6) | 139 (17.0) | 118 (15.4) | 219 (24.9) | 147 (18.5) | 135 (17.7) |
Others | 8 (1.0) | 7 (0.9) | 16 (2.1) | 28 (3.2) | 19 (2.4) | 23 (3.0) |
BMI, mean (SD), kg/m2 | 32.6 (6.6) | 32.5 (6.5) | 32.9 (6.8) | 29.9 (4.7) | 30.1 (4.8) | 30.4 (4.9) |
CES-D, mean (SD) | 8.7 (8.5) | 8.0 (7.6) | 7.8 (7.6) | 7.1 (6.9) | 6.9 (7.3) | 7.5 (7.5) |
Charlson comorbidity score, mean (SD) | 0.7 (1.0) | 0.8 (1.2) | 0.9 (1.4) | 0.5 (0. 9) | 0.6 (1.0) | 0.5 (1.0) |
# of painful joints in lower limb other than knee, mean (SD) | 2.0 (1.9) | 1.4 (1.7) | 1.9 (1.8) | 1.0 (1.4) | 0.9 (1.3) | 0.9 (1.3) |
N (%) with KR | ||||||
Unilateral KR | 77 (9.3) | 139 (17.0) | 167 (21.8) | 57 (6.5) | 88 (11.1) | 123 (16.1) |
Bilateral KR | 0 (0) | 29 (3.6) | 101 (13.2) | 0 (0) | 4 (0.5) | 19 (2.5) |
N (%) with partial and total KR | ||||||
Partial KR | 3 (0.4) | 9 (1.1) | 10 (1.3) | 0 (0.00) | 0 (0.00) | 2 (0.3) |
Total KR | 74 (9.0) | 158 (19.3) | 257 (23.6) | 57 (6.5) | 92 (11.6) | 139 (18.2) |
Partial KR and total KR | 0 (0) | 1 (0.1) | 1 (0.1) | 0 (0) | 0 (0) | 0 (0) |
WOMAC function, mean (SD) | 24.3 (11.7) | 23.0 (12.5) | 19.0 (12.2) | 19.6 (12.6) | 17.5 (12.4) | 17.0 (11.9) |
Maximal WOMAC knee pain scale, mean (SD) | 7.3 (3.7) | 6.8 (3.9) | 5.6 (3. 9) | 6 (3.9) | 5.6 (3.8) | 5.5 (3.7) |