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Table 5 PHQ-9 cutoff scores against the gold standard of study participants

From: Validation of the PHQ-9 depression scale in Ethiopian cancer patients attending the oncology clinic at Tikur Anbessa specialized hospital

Optimal cutoff point Sensitivity Specificity +LR -LR Correctly classified Youden index
≥1 100% 47.4% 1.9 0 55.5% 47.4%
≥2 100% 58.4% 2.4 0 64.8% 58.4%
≥3 100% 70% 3.4 0 74.7% 70%
≥4 88% 78.1% 4 0.09 79.6% 66.1%
≥5 72% 86.1% 5.2 0.24 83.9% 58.1%
≥6 72% 90.5% 7.5 0.25 87.6% 62.5%
≥7 68% 94.1% 11.7 0.3 90.1% 62.1%
≥8 60% 97.1% 20.6 0.3 91.3% 57.1%
≥9 48% 98.5% 33.1 0.51 90.7% 46.5%
≥10 32% 98.5% 22 0.67 88.2% 30.5%
≥11 28% 99.2% 38.3 0.71 88.2% 27.2%
≥12 16% 100% 0 0.84 87% 16%
≥13 12% 100% 0 0.87 86.4% 12%
≥14 4% 100% 0 0.96 85.1% 4%