Table 5.

Sensitivity, specificity, and positive and negative predictive values of the MDQ

Cut-off	Sensitivity	95% CI	Specificity	95% CI	+PV	95% CI	−PV	95% CI
≥0	100.00	79.4 to 100.0	0.00	0.0 to 1.8	7.2	4.2 to 11.5	100	0.99 to 1.00
≥1	100.00	79.4 to 100.0	0.00	0.0 to 1.8	7.2	4.2 to 11.5	100	0.99 to 1.00
≥2	75.00	47.6 to 92.7	53.66	46.6 to 60.6	11.2	5.9 to 18.8	96.5	91.3 to 99.0
≥3	75.00	47.6 to 92.7	54.15	47.1 to 61.1	11.3	6.0 to 18.9	96.5	91.3 to 99.0
≥4	75.00	47.6 to 92.7	55.12	48.0 to 62.1	11.5	6.1 to 19.3	96.6	91.5 to 99.1
≥5	75.00	47.6 to 92.7	59.02	52.0 to 65.8	12.5	6.6 to 20.8	96.8	92.0 to 99.1
≥6	75.00	47.6 to 92.7	63.90	56.9 to 70.5	14.0	7.4 to 23.1	97.0	92.6 to 99.2
≥7	68.75	41.3 to 89.0	67.80	60.9 to 74.1	14.3	7.4 to 24.1	96.5	92.1 to 98.9
≥8	68.75	41.3 to 89.0	72.20	65.5 to 78.2	16.2	8.4 to 27.1	96.7	92.5 to 98.9
≥9	62.50	35.4 to 84.8	77.07	70.7 to 82.6	17.5	8.7 to 29.9	96.3	92.2 to 98.6
≥10	62.50	35.4 to 84.8	85.85	80.3 to 90.3	25.6	13.0 to 42.1	96.7	93.0 to 98.8
≥11	56.25	29.9 to 80.2	92.20	87.6 to 95.5	36.0	18.0 to 57.5	96.4	92.8 to 98.6
≥12	37.50	15.2 to 64.6	96.10	92.5 to 98.3	42.9	17.7 to 71.1	95.2	91.3 to 97.7
=13	25.00	7.3 to 52.4	97.56	94.4 to 99.2	44.4	13.7 to 78.8	94.3	90.3 to 97.0

MDQ = Mood Disorder Questionnaire. +PV = positive predictive value. −PV = negative predictive value.