. Author manuscript; available in PMC: 2020 Aug 28.

Published in final edited form as: Neurol Psychiatry Brain Res. 2018 Nov 18;31:9–14. doi: 10.1016/j.npbr.2018.11.002

Table 4.

Sensitivity, specificity, positive predictive value, and negative predictive value of depression symptoms (95% CIs¹) for various PHQ-9 cut-off scores

PHQ-9 cut-off score	Sensitivity	Specificity	Positive predictive value	Negative predictive value
≥ 7	0.83 (0.59, 0.96)	0.74 (0.66, 0.80)	0.27 (0.16, 0.40)	0.97 (0.93, 0.99)
≥ 8	0.78 (0.52, 0.94)	0.81 (0.74, 0.87)	0.33 (0.19, 0.49)	0.97 (0.92, 0.99)
≥ 9	0.78 (0.52, 0.94)	0.87 (0.80, 0.92)	0.42 (0.24, 0.58)	0.97 (0.93, 0.99)
≥ 10	0.72 (0.47, 0.90)	0.88 (0.82, 0.93)	0.40 (0.25, 0.61)	0.97 (0.92, 0.99)
≥ 11	0.67 (0.41, 0.87)	0.90 (0.85, 0.95)	0.44 (0.26, 0.65)	0.96 (0.91, 0.99)

^1.

Confidence Intervals