Measuring Depression and Anxiety in Sub-Saharan Africa

BACKGROUND: Despite being one of the leading causes of disability worldwide, fewer than 10% of depressed individuals in low-resource settings have access to treatment. Mounting evidence suggests that nonspecialist workers are capable of providing counseling and case management at the community level. They often use brief psychiatric screening instruments as clinical tools to identify cases and monitor symptoms over time. In order for such tools to be used in diverse settings, they must demonstrate adequate reliability and validity in addition to cross-cultural relevance. To be used to guide routine care they also need to be flexibly adapted and sensitive to change. The goal of this paper is to assess the cross-cultural validity of brief psychiatric screening instruments in sub-Saharan Africa, identify best practices, and discuss implications for clinical management and scale-up of mental health treatment in resource-poor settings. METHOD: Systematic review of studies assessing the validity of screening instruments for depression, anxiety, and mental distress in sub-Saharan Africa using Medline and PsycINFO. RESULTS: Sixty-five studies from 16 countries assessing the validity of brief screening instruments for depression, anxiety, and/or mental distress. CONCLUSIONS: Despite evidence of underlying universality in the experience of depression and anxiety in sub-Saharan Africa, differences in the salience, manifestation, and expression of symptoms suggest the need for the local adaptation of instruments. Rapid ethnographic assessment has emerged as a promising, low-cost, and efficient strategy for doing so.