Patient Health Questionnaire
| Patient Health Questionnaire | |
|---|---|
| Medical diagnostics | |
| Synonyms | PHQ |
| LOINC | 69723-5 |
| Patient Health Questionnaire 2 item | |
|---|---|
| Medical diagnostics | |
| Synonyms | PHQ-2 |
| LOINC | 55757-9 |
| Patient Health Questionnaire 4 item | |
|---|---|
| Medical diagnostics | |
| Synonyms | PHQ-4 |
| LOINC | 69724-3 |
| Patient Health Questionnaire 15 item | |
|---|---|
| Medical diagnostics | |
| Synonyms | PHQ-15, PHQ Somatic Symptom Scale |
| LOINC | 69728-4 |
| Patient Health Questionnaire - Somatic, Anxiety, and Depressive Symptoms | |
|---|---|
| Medical diagnostics | |
| Synonyms | PHQ-SADS |
| LOINC | 69729-2 |
The Patient Health Questionnaire (PHQ) is a multiple-choice self-report inventory copyrighted by Pfizer Inc, that is used as a screening and diagnostic tool for mental health disorders of depression, anxiety, alcohol, eating, and somatoform disorders. It is the self-report version of the Primary Care Evaluation of Mental Disorders (PRIME-MD), a diagnostic tool developed in the mid-1990s by Pfizer Inc. The length of the original assessment limited its feasibility; consequently, a shorter version, consisting of 11 multi-part questions - the Patient Health Questionnaire was developed and validated.
In addition to the PHQ, a nine-item version to assess symptoms of depression, a seven-item version to assess symptoms of anxiety (GAD-7), and a 15-item version to detect somatic symptoms (PHQ-15) have been developed and validated. The PHQ-9, GAD-7, and the PHQ-15 were combined to create the PHQ-somatic, anxiety, depressive symptoms (PHQ-SADS) and includes questions regarding panic attacks (after the GAD-7 section). Though less commonly used, there are also brief versions of the PHQ-9 and GAD-7 that may be useful as screening tools in some settings. In recent years, the PHQ-9 has been validated for use in adolescents, and a version for adolescents was also developed and validated (PHQ-A). Although these tests were originally designed as self-report inventories they can also be administered by trained health care practitioners.
The PHQ is available in over 20 languages, available on the PHQ website. Both the original Patient Health Questionnaire and later variants are public domain resources; no fees or permissions are required for using or copying the measures. Additionally, the measures have been validated in a number of different populations internationally.
The original Patient Health Questionnaire contains five modules; these contain questions about depressive, anxiety, somatoform, alcohol, and eating disorders. Designed for use in the primary care setting, it lacks coverage for disorders seen in psychiatric settings. Some modules are used independently, and variants have been developed based on the original items.
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