A Large, Multi-Country Study Is Conducted to Determine the Effect

A large, multi-country study is conducted to determine the effect of economic development on cancer incidence and mortality.  The study uses data obtained from the national cancer registries, along with information regarding per capita gross domestic product as reported by the International Monetary Fund and life expectancy as reported by the World Health Organization.  Which of the following best describes the design of this study?

A) Case-control study
B) Cohort study
C) Cross-sectional survey
D) Ecological study
E) Nested case-control study
F) Qualitative study
G) Randomized controlled trial
H) Systematic review

Correct Answer:

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