carlat report patient health questionnaire-9

What is the Patient Health Questionnaire-9?

Patient Health Questionnaire-9 Introduction The Patient Health Questionnaire (PHQ) is a self-report version of the Primary Care Evaluation of Mental Disorders (PRIME-MD) diagnostic tool for common mental disorders. The PHQ-9 is a brief, 9-item scale that includes only the depression-related items from the PHQ.

What is the validity of the patient health Questionnaire-2 (PHQ-2)?

The Patient Health Questionnaire-2: Validity of a Two-Item Depression Screener. Medical Care. 2003;41:1284-92. Kroenke K, Spitzer RL, Williams JB. The PHQ-9: validity of a brief depression severity measure.

How many patients refused the PHQ-9 and SCID?

In total, 323 patients who were eligible and approached completed both the PHQ-9 and SCID between December, 2017 and April, 2018 thus we had no refusals. Among the 323 patients, 127 (39.3%) had diabetes only while 196 (60.7%) had both diabetes and hypertension.

Is the PHQ-9 a useful tool for screening for comorbid depression?

The validity, ease of administration and brevity of the PHQ-9 imply that it will be a valuable tool for identifying comorbid depression in patients with non communicable diseases using a cut-point of ≥9. Clinicians in NCD clinics when choosing a tool for screening depression should consider the PHQ-9.

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What is PHQ-9?

The PHQ-9 is derived from the Primary Care Evaluation of Mental Disorders interview schedule which utilizes criteria set forth in the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) to diagnose depression

Which is more accurate, the PHQ-9 or the WBI-5?

The PHQ-9 was found to be more accurate in diagnosing ‘major depressive disorder’ than either the Hospital Anxiety and Depression Scale (HADS) or the Well Being Index (WBI-5) Suggested cut-off to indicate depression is PHQ-9 > 11.

Interpretation

Total scores of 5, 10, 15, and 20 represent cutpoints for mild, moderate, moderately severe and severe depression, respectively.

Sources

Kroenke K, Spitzer RL, Williams JB. The Patient Health Questionnaire-2: Validity of a Two-Item Depression Screener. Medical Care. 2003;41:1284-92.