Table 3.

Network performance on outcome measures. Kellgren & Lawrence grades are displayed separately and merged

	Cases (n = 300)	Sensitivity (%)	Specificity (%)	Youden’s J	AUC (95% CI)
Kellgren-Lawrence
0	67	97	88	0.85	0.97 (0.93 to 0.99)
1	23	96	75	0.70	0.88 (0.83 to 0.92)
2	24	92	61	0.53	0.80 (0.73 to 0.86)
3	116	92	71	0.63	0.87 (0.83 to 0.90)
4	70	84	78	0.63	0.87 (0.83 to 0.91)
Grouped Kellgren-Lawrence
0 to 1	90	88	95	0.83	0.96 (0.94 to 0.98)
0 to 2	114	83	97	0.81	0.97 (0.95 to 0.98)
1 to 3	163	80	74	0.53	0.82 (0.77 to 0.87)
2 to 4	210	97	83	0.80	0.96 (0.94 to 0.98)
3 to 4	186	96	88	0.84	0.97 (0.95 to 0.99)