Table 1 Baseline predictors and covariates for cross-sectional and longitudinal analyses, n (%) or mean (SD)
Variable | Cross-sectional (wgt. N = 255.0) | Longitudinal (wgt. N = 217.3) |
|---|---|---|
Female | 143.6 (56.3) | 119.8 (55.1) |
Age, mean (SD) | 56.7 (10.4) | 57.2 (9.0) |
BMI, mean (SD) | 26.5 (4.9) | 26.1 (4.2) |
KL grade | ||
0 | 104.9 (41.1) | 70.4 (32.4) |
1 | 52.1 (20.4) | 47.7 (22.0) |
2 | 48.7 (19.1) | 52.0 (23.9) |
3 | 26.9 (10.6) | 24.3 (11.2) |
4 | 22.3 (8.8) | 22.9 (10.5) |
Medial femoral cartilage | ||
0 | 85.3 (33.5) | 81.0 (37.3) |
1 | 91.4 (35.9) | 72.5 (33.4) |
2 | 49.1 (19.3) | 36.8 (16.9) |
3 | 29.2 (11.4) | 26.9 (12.4) |
Medial tibial cartilage | ||
0 | 126.1 (49.5) | 119.9 (55.2) |
1 | 75.3 (29.5) | 52.2 (24.0) |
2 | 27.3 (10.7) | 20.9 (9.6) |
3 | 26.3 (10.3) | 24.3 (11.1) |
Medial femoral osteophytes | ||
0 | 97.7 (38.3) | 76.3 (35.1) |
1 | 80.5 (31.6) | 103.6 (47.7) |
2 | 42.1 (16.5) | 23.3 (10.7) |
3 | 34.7 (13.6) | 14.1 (6.5) |
Medial tibial osteophytes | ||
0 | 53.5 (21.0) | 74.7 (34.4) |
1 | 125.9 (49.4) | 128.5 (59.1) |
2 | 36.1 (14.1) | 11.1 (5.1) |
3 | 39.5 (15.5) | 3.0 (1.4) |
Medial anterior meniscus | ||
0 | 244.2 (95.8) | 196.6 (90.5) |
1 | 10.8 (4.3) | 20.7 (9.5) |
Medial meniscal body | ||
0 | 190.3 (74.6) | 154.8 (71.3) |
1 | 64.7 (25.4) | 62.5 (28.7) |
Medial posterior meniscus | ||
0 | 169.7 (66.5) | 134.1 (61.7) |
1 | 85.3 (33.5) | 83.2 (38.3) |
Lateral femoral cartilage | ||
0 | 107.7 (42.2) | 143.8 (66.2) |
1 | 79.6 (31.2) | 36.2 (16.7) |
2 | 40.1 (15.7) | 22.8 (10.5) |
3 | 27.6 (10.8) | 14.4 (6.7) |
Lateral tibial cartilage | ||
0 | 189.8 (74.4) | 135.8 (62.5) |
1 | 30.7 (12.1) | 46.9 (21.6) |
2 | 17.7 (7.0) | 15.1 (6.9) |
3 | 16.8 (6.6) | 19.5 (9.0) |
Lateral femoral osteophytes | ||
0 | 124.9 (49.0) | 17.7 (8.2) |
1 | 66.9 (26.3) | 122.1 (56.2) |
2 | 31.3 (12.3) | 69.5 (32.0) |
3 | 31.9 (12.5) | 7.9 (3.6) |
Lateral tibial osteophytes | ||
0 | 78.4 (30.8) | 53.5 (24.6) |
1 | 95.0 (37.3) | 124.5 (57.3) |
2 | 45.2 (17.7) | 38.2 (17.6) |
3 | 36.3 (14.3) | 1.1 (0.5) |
Lateral anterior meniscus | ||
0 | 233.5 (91.6) | 198.4 (91.3) |
1 | 21.5 (8.5) | 18.8 (8.7) |
Lateral meniscal body | ||
0 | 233.8 (91.7) | 186.1 (85.6) |
1 | 21.2 (8.3) | 31.2 (14.4) |
Lateral posterior meniscus | ||
0 | 240.1 (94.2) | 192.5 (88.6) |
1 | 14.9 (5.9) | 24.8 (11.4) |
Patellar cartilage | ||
0 | 98.2 (38.5) | 85.1 (39.2) |
1 | 73.1 (28.7) | 71.9 (33.1) |
2 | 59.0 (23.2) | 43.2 (19.9) |
3 | 24.7 (9.7) | 17.2 (7.9) |
Trochlear groove cartilage | ||
0 | 121.4 (47.6) | 105.6 (48.6) |
1 | 62.6 (24.5) | 67.5 (31.1) |
2 | 57.1 (22.4) | 34.6 (15.9) |
3 | 13.9 (5.5) | 9.6 (4.4) |
Medial patellar osteophytes | ||
0 | 133.5 (52.4) | 57.2 (26.3) |
1 | 88.2 (34.6) | 115.4 (53.1) |
2 | 26.3 (10.3) | 41.1 (18.9) |
3 | 7.0 (2.8) | 3.6 (1.7) |
Lateral patellar osteophytes | ||
0 | 68.6 (26.9) | 29.6 (13.6) |
1 | 117.0 (45.9) | 151.4 (69.7) |
2 | 47.2 (18.5) | 33.3 (15.3) |
3 | 22.1 (8.7) | 3.0 (1.4) |
Superior patellar osteophytes | ||
0 | 35.1 (13.8) | 24.8 (11.4) |
1 | 161.2 (63.2) | 144.3 (66.4) |
2 | 39.6 (15.5) | 42.8 (19.7) |
3 | 19.1 (7.5) | 5.4 (2.5) |
Inferior patellar osteophytes | ||
0 | 156.6 (61.4) | 95.3 (43.9) |
1 | 63.6 (24.9) | 102.8 (47.3) |
2 | 22.1 (8.7) | 19.2 (8.9) |
3 | 12.7 (5.0) | 0.0 (0.0) |