The validity of the Patient Health Questionnaire for screening depression in chronic care patients in primary health care in South Africa.
BMC Psychiatry
; 15: 118, 2015 May 23.
Article
in En
| MEDLINE
| ID: mdl-26001915
ABSTRACT
BACKGROUND:
People with chronic health conditions are known to have a higher prevalence of depressive disorder. The Patient Health Questionnaire (PHQ-9) is a widely-used screening tool for depression which has not yet been validated for use on chronic care patients in South Africa.METHODS:
A sample of 676 chronic care patients attending two primary health facilities in North West Province, South Africa were administered the PHQ-9 by field workers and a diagnostic interview (the Structured Clinical Interview for DSM-IV) (SCID) by clinical psychologists. The PHQ-9 and the PHQ-2 were evaluated against the SCID, as well as for sub-samples of patients who were being treated for HIV infection and for hypertension.RESULTS:
Using the SCID, 11.4 % of patients had major depressive disorder. The internal consistency estimate for the PHQ-9 was 0.76, with an area under the receiver operator curve (AUROC) of 0.85 (95 % CI 0.82-0.88), which was higher than the AURUC for the PHQ-2 (0.76, 95 % CI 0.73-0.79). Using a cut-point of 9, the PHQ-9 has sensitivity of 51 % and specificity of 94 %. The PHQ-9 AUROC for the sub-samples of patients with HIV and with hypertension were comparable (0.85 and 0.86, respectively).CONCLUSIONS:
The PHQ-9 is useful as a screening tool for depression among patients receiving treatment for chronic care in a public health facility.
Full text:
1
Database:
MEDLINE
Main subject:
Primary Health Care
/
Surveys and Questionnaires
/
Long-Term Care
/
Depressive Disorder, Major
Type of study:
Diagnostic_studies
/
Qualitative_research
/
Risk_factors_studies
/
Screening_studies
Limits:
Adult
/
Female
/
Humans
/
Male
/
Middle aged
Country/Region as subject:
Africa
Language:
En
Year:
2015
Type:
Article