Thai Version of the PHQ-9 for Depression Screening
Author Information
Author(s): Lotrakul Manote, Sumrithe Sutida, Saipanish Ratana
Primary Institution: Mahidol University
Hypothesis
The study aims to examine the reliability and validity of a Thai version of the PHQ-9 as a screening tool for major depression in primary care patients.
Conclusion
The Thai version of the PHQ-9 has acceptable psychometric properties for screening for major depression in general practice with a recommended cut-off score of nine or greater.
Supporting Evidence
- The PHQ-9 showed satisfactory internal consistency with a Cronbach's alpha of 0.79.
- The optimal cut-off score of PHQ-9 ≥ 9 revealed a sensitivity of 0.84 and specificity of 0.77.
- The area under the curve (AUC) was 0.89, indicating moderate accuracy.
Takeaway
The Thai PHQ-9 is a short questionnaire that helps doctors find out if someone might be depressed, and it works well if you score nine or higher.
Methodology
The PHQ-9 was translated into Thai and tested on 1,000 patients, with reliability and validity analyses performed.
Potential Biases
Participants might have underreported their depressive symptoms.
Limitations
The study was conducted in a university hospital, which may not represent primary care patients in rural areas, and there may be underreporting of symptoms.
Participant Demographics
Mean age of participants was 45.0 years, with 73.7% females.
Statistical Information
P-Value
<0.001
Confidence Interval
95% CI 0.85 to 0.92
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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