Prevalence Rates for Mood Disorders in Canadian Studies Vary Widely

question 94

Multiple Choice

Prevalence rates for mood disorders in Canadian studies vary widely, from 8.6 percent in the Canadian Community Health Survey to 10.3 percent and 11 percent in surveys in Toronto and Calgary, respectively.What is epidemiologist psychiatrist Roger Bland's explanation regarding these varying rates?

• A)different research methods
• B)cultural differences in the reporting of mood symptoms
• C)differences in health care systems
• D)varying levels of sunlight across regions of Canada

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