Endoscopic Surgical Treatment of Osteoarthritis and Prognostic Model Construction

Table 2

Correlation matrix between features.

	Age	Sex	BMI	Morning stiffness time	Region	KL score	Osteophyte area	Step count	Joint	Involved joint	Surgical type	Evaluation
Age	1.000	-0.062	0.008	-0.106	-0.010	0.003	0.021	-0.048	0.021	0.044	0.068	-0.293
Sex	-0.062	1.000	-0.036	0.029	0.152	-0.056	-0.083	0.023	-0.056	0.006	0.073	0.319
BMI	0.008	-0.036	1.000	0.022	0.087	0.007	-0.010	-0.182	0.002	0.122	0.089	-0.235
Morning stiffness time	-0.106	0.029	0.022	1.000	-0.012	0.031	0.009	-0.027	0.069	0.011	0.062	0.120
Region	-0.010	0.152	0.087	-0.012	1.000	-0.043	0.025	0.225	0.147	-0.179	-0.063	0.172
KL score	0.003	-0.056	0.007	0.031	-0.043	1.000	0.059	0.033	-0.081	-0.073	-0.262	-0.040
Osteophyte area	0.021	-0.083	-0.010	0.009	0.025	0.059	1.000	0.080	-0.074	-0.025	-0.039	-0.051
Step count	-0.048	0.023	-0.182	-0.027	0.225	0.033	0.080	1.000	0.072	0.054	-0.105	0.152
Joint	0.021	-0.056	0.002	0.069	0.147	-0.081	-0.074	0.072	1.000	0.041	0.005	0.024
Involved joint	0.044	0.006	0.122	0.011	-0.179	-0.073	-0.025	0.054	0.041	1.000	0.083	-0.060
Surgical type	0.068	0.073	0.089	0.062	-0.063	-0.262	-0.039	-0.105	0.005	0.083	1.000	-0.016
Evaluation	-0.293	0.319	-0.235	0.120	0.172	-0.040	-0.051	0.152	0.024	-0.060	-0.016	1.000

Note: BMI: body mass index; KL score: Kellgren-Lawrence classification.