The validity and reliability of the Patient Health Questionnaire-9 for screening depression in primary health care patients in Botswana

Autor: Keneilwe Molebatsi, Keneilwe Motlhatlhedi, Grace Nduku Wambua
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: BMC Psychiatry, Vol 20, Iss 1, Pp 1-10 (2020)
Druh dokumentu: article
ISSN: 1471-244X
DOI: 10.1186/s12888-020-02719-5
Popis: Abstract Background The lack of locally validated screening instruments contributes to poor detection of depression in primary care. The Patient Health Questionnaire-9 (PHQ-9) is a brief and freely available screening tool which was developed for primary care settings; however, its accuracy may be affected by the population in which it is administered. This study aimed to determine the validity and reliability of PHQ-9 for screening depression in a primary care population in Botswana. Methods Data was collected from a conveniently selected sample of 257 adult primary care attendants. The Mini International Neuropsychiatric Interview (MINI) depression module was used as a gold standard to assess criterion validity. Results Sensitivity and specificity of the PHQ-9 for screening for major depression were 72.4 and 76.3 respectively at a cut off score of nine or more. The area under the ROC curve was 0.808. The PHQ-9 demonstrated good internal consistency with a Cronbach alpha of 0.799. Criterion validity was demonstrated by significant correlation (r = 0.528, p
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