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Epidemiology Surveys

How were the questionnaires developed?

The core questionnaire was based largely on the World Health Organization's (WHO) expanded version of the Composite International Diagnostic Interview (CIDI) developed for the World Mental Health (WMH) Survey Initiative, the WMH-CIDI.
For more information, consult the Questionnaire Development section of About CPES, or view a 22-minute video of Ron Kessler speaking on the development of CIDI.