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Mathematics, 06.08.2021 17:20 cyriagirl

An epidemiological study involved the comparison of per capita annual income and annual rate of teenage pregnancy in Massachusetts counties in 2012. What type of study is this? a. Case report
b. Case series
c. Ecological study
d. Cross-sectional study

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An epidemiological study involved the comparison of per capita annual income and annual rate of teen...

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