Table 2.

Sensitivity, specificity, and likelihood ratios with composite international diagnostic interview as ideal screening tool for major depression

			Likelihood ratio
Screening question	Sensitivity % (95% CI)	Specificity % (95% CI)	Positive test (95% CI)	Negative test (95% CI)
Both questions	97 (83 to 99)	67 (62 to 72)	2.9 (2.5 to 3.4)	0.05 (0.01 to 0.35)
Depression only question	86 (69 to 95)	72 (67 to 76)	3.0 (2.5 to 3.8)	0.19 (0.08 to 0.48)
Pleasure only question	83 (66 to 92)	79 (74 to 82)	3.9 (3.0 to 5.0)	0.22 (0.1 to 0.49)