Table 3

Regression coefficients for presence of symptomatic knee OA as obtained by logistic ridge regression analyses

	Set 1	Set 2	Set 3	Mean coefficient
Baker's cyst	0.391	0.235	0.254	0.293
Effusion	0.255	0.220	0.116	0.197
Tibiofemoral compartment:
Osteophytes
Medial femoral condyle	0.184	0.205	0.166	0.185
Lateral femoral condyle	0.008	0.066	0.123	0.065
Medial tibial plateau	0.314	0.250	0.273	0.279
Lateral tibial plateau	0.019	0.081	0.149	0.083
Cartilage defects
Medial femoral condyle	0.245	0.075	0.154	0.158
Lateral femoral condyle	0.038	0.074	0.130	0.081
Medial tibial plateau	−0.054	0.046	0.041	0.011
Lateral tibial plateau	−0.119	−0.028	−0.018	−0.055
Bone marrow lesions
Medial femoral condyle	0.211	0.138	0.230	0.193
Lateral femoral condyle	0.003	0.013	−0.053	−0.012
Medial tibial plateau	0.101	0.179	0.283	0.188
Lateral tibial plateau	0.175	0.056	0.034	0.088
Patellofemoral compartment:
Osteophytes
Patellar crest	0.033	0.009	0.024	0.022
Medial patellar facet	0.135	0.170	0.124	0.143
Lateral patellar facet	0.158	0.037	0.099	0.098
Medial trochlear facet	0.275	0.258	0.252	0.262
Lateral trochlear facet	0.047	0.048	0.135	0.077
Cartilage defects
Patellar crest	0.188	0.123	0.127	0.146
Medial patellar facet	0.184	0.133	0.011	0.109
Lateral patellar facet	0.073	0.095	0.120	0.096
Medial trochlear facet	0.078	0.117	0.021	0.072
Lateral trochlear facet	−0.035	0.105	0.020	0.030
Bone marrow lesions
Patellar crest	0.070	0.179	0.149	0.133
Medial patellar facet	−0.077	−0.061	−0.097	−0.078
Lateral patellar facet	0.071	0.000	0.014	0.029
Medial trochlear facet	−0.026	−0.024	−0.062	−0.037
Lateral trochlear facet	0.016	0.039	−0.017	0.012
Menisci:
Subluxation medial/lateral	0.053/0.050	0.035/−0.021	0.016/−0.021	0.035/0.003
Maceration medial/lateral	0.202/0.090	0.052/−0.013	0.070/0.109	0.108/0.062
Tear medial/lateral	0.004/0.092	0.009/0.014	0.050/0.034	0.021/0.047

The strongest mean regression coefficients for presence of symptomatic knee osteoarthritis (OA) are shown in bold typeface. All three sets include all individuals with symptomatic OA in the imaged knee and a random 1/3 of individuals without symptomatic OA.