Table 5.

Test Characteristics of Triage Algorithms for Identifying Patients Needing a Clinician Evaluation by Sex; Seattle, Washington, October 2010 through June 2015

	Optimized Algorithm	Current Algorithm*	Simple Algorithm
Men (n = 6,984)
Sensitivity, %	93.5	94.9	90.8
Specificity, %	82.9	71.9	82.6
AUC (95% CI)	0.88 (0.87–0.89)	0.83 (0.82–0.84)	0.87 (0.86–0.88)
Express visits, n (%)	2,232 (32)	1,911 (27)	2,350 (34)
Women (n = 2,342)
Sensitivity, %	93.2	97.7	92.9
Specificity, %	86.4	32.9	85.0
AUC (95% CI)	0.90 (0.88–0.91)	0.65 (0.64–0.67)	0.89 (0.87–0.90)
Express visits, n (%)	696 (30)	260 (11)	691 (30)
Men and Women (n = 9,326)
Express visits, n (%)	2,928 (31)	2,171 (23)	3,041 (33)

Abbreviations: AUC, area under the receiver operating curve; CI, confidence interval.

^*Public Health – Seattle and King County STD Clinic current algorithm as of October 1, 2015.