Clinical and laboratory features that discriminate dengue from other febrile illnesses: a diagnostic accuracy study in Rio de Janeiro, Brazil

Table 4 Adjusted odds ratios and accuracy parameters for dengue diagnosis of multiple logistic regression models according to the range of included data (clinical only or clinical and laboratory)

	Adjusted diagnostic odds ratio		Sensitivity		Specificity
	OR	95%CI	%	95%CI	%	95%CI
Model 1 - Clinical data only
History of Rash	3.84	1.54–10.24	84.6	46.8–93.0	66.7	38.6–78.8
Conjunctival redness	4.05	1.69–10.31
Model 2 - Clinical and laboratory data
Conjunctival redness	4.1	1.61–11.22	80.8	59.6–94.6	71.1	53.3–84.4
Leukocytes (ln)^a	0.13	0.04–0.34

NOTE. – OR: odds ratio; 95% CI: 95% confidence interval. ^a Effect for each unit of natural logarithm of leukocyte count.

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