PHQ-9 (Patient Health Questionnaire-9) is a depression

PHQ-9 (Patient Health Questionnaire-9) is a depression screening tool that is widely used among adults that provides clinical value and diagnostic accuracy. This screening test was designed to be used as the first step in the screening process and followed by the more comprehensive PHQ-9 follow-up test if positive (Sun, et al., 2019) 1)Identifies, in own words, the reported reliability of the screening tool. 2) Indicates the reliability statistic used e.g., Cronbach’s alpha and the statistic e.g., 0.84. 3) Identifies, in own words, the reported validity of the screening tool, ideally the sensitivity and specificity of the tool. References Sun, Y., Fu, Z., Bo, Q., Mao, Z., Ma, X., & Wang, C. (2019). The reliability and validity of PHQ-9 in patients with major depressive disorder in psychiatric hospital. https://doi.org/10.21203/rs.2.18098/v1 Kroenke, K., Spitzer, R. L., & Williams, J. B. (2001). The PHQ-9: validity of a brief depression severity measure. Journal of general internal medicine, 16(9), 606-613. https://doi.org/10.1046/j.1525-1497.2001.016009606.x

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