The PHQ-9 is the depression module from the PRIME-MD diagnostic instrument for common mental disorders, which scores each of the nine DSM-IV criteria as "0" (not at all) to "3" (nearly every day). It is not a screening tool for depression but it is used to monitor the severity of depression and response to treatment
Year: 2002 Authors: Kroenke et al Disease: T2DM Outcome: Quality of life
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Measure: Psychological distress
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Number of RCTs that used this tool (in our study): 5
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Scale: Lower scores are better, scores range 0-27 Reference: Kroenke, K., Spitzer, R. L., & Williams, J. B. (2002). The PHQ-15: validity of a new measure for evaluating the severity of somatic symptoms. Psychosomatic medicine, 64(2), 258–266.
Target population: General population Focus Generic Translations available: Yes Original version validated: Yes Original language: English Form of delivery: Self-reported Licence needed: No 10.1097/00006842-200203000-00008