Table 5:

Predictive performance of clinical and image-based features^{^a}

	Positive Pathologyy			Positive Pathology and/or Microbiologyy
	AUC	Sensitivity	Specificity	AUC	Sensitivity	Specificity
CRP, ESR, and fever	0.72	68.2	67.0	0.68	60.5	64.5
CRP, ESR, fever, and epidural enhancement (observer 1)	0.87	83.1	79.8	0.76	68.4	75.6
CRP, ESR, fever, and epidural enhancement (observer 2)	0.76	75.0	66.5	0.73	59.6	76.2
CRP, ESR, fever, and epidural enhancement (observer 3)	0.79	77.2	70.1	0.78	69.3	75.8
CRP, ESR, fever, and epidural enhancement (majority consensus)	0.80	78.3	75.6	0.79	77.4	74.6

↵a Logistic regression with backward stepwise selection was used to find the optimal combination of clinical and imaging features for 3 independent observers with majority consensus among the observers.