TABLE 1.

Comparison of Screening Tool Performance in Surgical and Medical Patients

	Overall, N = 245 (95% CI)	Surgery, N = 169 (95% CI)	Medicine, N = 76 (95% CI)	P Value*
Sensitivity	95.5% (75%–99.7%)	93% (66%–99.6%)	100% (56%–100%)	0.17
Specificity	91.9% (87%–95%)	90% (84%–94%)	95% (87%–99%)	0.48
NPV	99.5% (81%–100%)	99.3% (71%–100%)	100% (67%–100%)	0.89
PPV	53.8% (39%–70%)	48% (23%–73%)	70% (30%–100%)	0.12
LR+	11.8	9.3	20
LR−	0.05	0.08	0
Confirmed patient diagnosis, overall†
	Sepsis		No sepsis
Screen positive	21 (TP)		18 (FP)
Screen negative	1 (FN)		205 (TN)
Confirmed patient diagnosis, medicine†
	Sepsis		No sepsis
Screen positive	7 (TP)		3 (FP)
Screen negative	0 (FN)		66 (TN)
Confirmed patient diagnosis, surgery†
	Sepsis		No sepsis
Screen positive	14 (TP)		15 (FP)
Screen negative	1 (FN)		139 (TN)

NOTE: Abbreviations: CI, confidence interval; FN, false negative; FP, false positive; LR+, positive likelihood ratio; LR−, negative likelihood ratio; NPV, negative predictive value; PPV, positive predictive value; TN, true negative; TP, true positive.

^*Comparing medicine to surgery patient test performance.

^†Confirmed by International Classification of Diseases, Ninth Revision code and/or medical record documentation.