What does PHQ-9 stand for?
Printer-friendly version. The PHQ-9 is the nine item depression scale of the patient health questionnaire. The nine items of the PHQ-9 are based directly on the nine diagnostic criteria for major depressive disorder in the DSM-IV.
When was the PHQ-9 created?
Kurt Kroenke, and colleagues from Columbia University developed the PHQ in the mid 1990s and the PHQ-9 in 1999 with a grant from Pfizer.
What is the modified PHQ-9?
A diagnostic tool for mental health disorders for use in screening adolescents.
What does PHQ-2 stand for?
Share. The PHQ-2 inquires about the frequency of depressed mood and anhedonia over the past two weeks. The PHQ-2 includes the first two items of the PHQ-9. The purpose of the PHQ-2 is to screen for depression in a “first-step” approach.
Who invented the PHQ-9?
Spitzer and colleagues1 developed the Patient Health Questionnaire-9 as a brief self-report inventory derived from the PRIME-MD clinical interview to measure the nine core DSM-IV diagnostic symptoms associated with a depressive episode.
Who created the PHQ-9 scale?
The PHQ was derived from an assessment tool utilized by medical professionals called the PRIME-MD that addresses multiple mental health diagnoses. The PHQ-9 was developed and copyrighted by Drs. R.L. Spitzer, J.B.W. Williams, and K. Kroenke in 1999 with an educational grant from Pfizer, Inc.
Is the PHQ-9 reliable?
Conclusions. PHQ-9 showed good reliability and validity, and high adaptability for patients with MDD in psychiatric hospital. It is a simple, rapid, effective, and reliable tool for screening and evaluation of the severity of depression.
Is the PHQ-9 culturally appropriate?
Measurement invariance should be assessed prior to comparing mean PHQ-9 scores. The unmodified one-factor PHQ-9 was a poor fit for most racial and ethnic groups. Two-factor models presented the best fits. After modification, the one-factor PHQ-9 was partially cross-culturally invariant.
What age is PHQ-9 for?
The PHQ 2 and 9 are appropriate to be used with individuals 12 years of age and older. Alternative screening tools have been developed and validated for use among special populations including youth and older adults.
What is the PHQ 3?
Interpretation: A PHQ-2 score ranges from 0-6. The authors identified a score of 3 as the optimal cutpoint when using the PHQ-2 to screen for depression. If the score is 3 or greater, major depressive disorder is likely.
Is PHQ-9 copyrighted?
The PHQ 2 and 9 are both publicly available, and no permission is required to use, reproduce, or distribute the tools.
How was the PHQ-9 developed?
How often should the PHQ-9 Be Used?
Recommended Frequency of Administering PHQ-9: At least quarterly while on active treatment. At least annually after that.
What are the limitations of the PHQ-9?
Although, the Patient Health Questionnaire-9 (PHQ-9) is the most commonly used tool for screening for depression in primary care, previous meta-analyses on the diagnostic test accuracy of the PHQ-9 reported limitations, which included selective cut-off reporting in fundamental studies and the inability to assess …
How accurate is the PHQ-9?
PHQ-9 Diagnostic Algorithm Accuracy by Reference Standard Compared to semi-structured interviews, sensitivity and specificity were 0.57 (95% CI, 0.49–0.64) and 0.95 (95% CI, 0.94–0.97) for the original algorithm and 0.61 (95% CI, 0.54–0.68) and 0.95 (0.93–0.96) for the modified algorithm.