Is the PHQ-9 evidence based?

Is the PHQ-9 evidence based?

The PHQ-9 works well as a screening but not diagnostic instrument for depressive disorder | Evidence-Based Mental Health.

Do you have to cite the PHQ-9?

It seems that the PHQ-9 can be used freely for research, but as with any scale you use, you always need to acknowledge the creators.

How do you cite PHQ-9?

The PHQ-9: validity of a brief depression severity measure. Journal of General Internal Medicine, 16(9): 606-613. Kroenke, K. & Spitzer, R.L. (2002).

Is the PHQ-9 reliable and valid?

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.

What is the difference between PHQ-9 and PHQ A?

The full version of the PHQ-A takes more time to complete. Nine of its questions assessing depression have been placed into a questionnaire, the PHQ-9 Modified for Adolescents (PHQ-A), to reduce completion time. The BDI-II takes several more minutes to complete than the other instruments.

What is considered a positive PHQ-9 score?

Depression Severity: 0-4 none, 5-9 mild, 10-14 moderate, 15-19 moderately severe, 20-27 severe. Validity has been assessed against an independent structured mental health professional (MHP) interview. PHQ-9 score ≥10 had a sensitivity of 88% and a specificity of 88% for major depression.

Is the PHQ copyrighted?

The Patient Health Questionnaire-9 is valid, reliable, and cost effective psychological screening instrument for depression. Clinicians may reproduce the PHQ-9 free of charge and without fear of copyright violation. The PHQ-9 is intended to be used by clinicians or researchers in primary care settings.

How is PHQ-9 validated?

The PHQ-9 was completed by 6,000 patients in 8 primary care clinics and 7 obstetrics-gynecology clinics. Construct validity was assessed using the 20-item Short-Form General Health Survey, self-reported sick days and clinic visits, and symptom-related difficulty.

Is PHQ-9 subjective or objective?

The higher the score of each test, the better objective cognition in that area. Patients rated their depression severity by using the 9-item Patient Health Questionnaire (PHQ-9), the official Thai version21. PHQ-9 scores range from 0 to 30. The higher the PHQ-9 scores, the more severe the depression.

What are the limitations of 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 …

Who can administer a PHQ-9?

The case manager or other healthcare professional may administer the simple and effective Patient Health Questionnaire (PHQ-9) with proven validity and reliability.

What is a negative PHQ-9?

The PHQ-9 has 9 questions with a score ranging from 0 to 3 for each question (maximum score of 27). A threshold score of 10 or higher is considered to indicate mild major depression, 15 or higher indicates moderate major depression, and 20 or higher severe major depression.

What does a 5 on the PHQ-9 mean?

Among adults, scores on the PHQ-9 have also been used to define severity for probable diagnoses in the following manner: a score of 5-9 is considered minimal depression, 10-14 is considered mild major, 15-19 is moderate major, and ≥20 is severe major.

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

Compared to the findings in adults, the sensitivity of the PHQ-9 is higher but the specificity is lower in the adolescent population. This suggests that when used as a screening tool, the PHQ-9 is less likely to miss youth with major depression but there is a higher false positive rate in adolescent populations.

How many students completed the PHQ-9?

The PHQ-9 was completed by 442 youth (13-17 years) who were enrolled in a large healthcare delivery system and participating in a study on depression outcomes. Criterion validity and performance characteristics were assessed against an independent structured mental health interview (the Child Diagnostic Interview Schedule, DISC-IV).

How specific is the PHQ-9 score across diagnostic interviews?

Specificity was similar across diagnostic interviews. The PHQ-9 seems to be similarly sensitive but may be less specific for younger patients than for older patients; a cut-off score of 10 or above can be used regardless of age..