7) Based on a report by the U.S. Department of Health and Human Services, \"Heal

Question

7) Based on a report by the U.S. Department of Health and Human Services, "Health, United States, 2015 With Special Feature on Racial and Ethnic Health Disparities, in 2014 77.8% of 18-64 year-olds living at 400% or higher of the poverty level had visited the dentist in the past year, but only 41.9% of 18-64 years-olds living at below 100% of the poverty level had visited the dentist in the past year. (https://www.cdc.gov/nchs/data/hus/husl5.pdf) Estimate the risk ratio for visiting the dentist in the past year in 2014 for a 18-64 year-old living at 400% or higher of the poverty level versus a 18-64 year-old living at below 100% of the poverty level. a) b) Estimate the odds ratio for visiting the dentist in the past year in 2014 for a 18-64 old living at 400% or higher of the poverty level versus a 18-64 year-old living at below 100% of the poverty level. c) *1 point] How do parts a) and b) compare? Explain why that is the case.

Explanation / Answer

400% or higher : Visited 77.8 Not visited - 22.2

100% or lower : Visited 41.9 Not visited 58.1

Risk ratio = 77.8/41.9 = 1.856

Odds ratio = 77.8/22.2/(41.9/58.1)= 4.85

Odds ratio is higher than risk ratio .

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