Cotinine Levels Have Been Used as Biomarkers to Assess Tobacco

question 9

Essay

Cotinine levels have been used as biomarkers to assess tobacco exposure among women. There have been questions on whether increased cotinine levels increase an individual's reactive hyperemia index (RHI), which is a measure of endothelial function and cardiovascular risk. For your study, you gathered cotinine and RHI data on 200 women. You are interested in the correlation between the two variables. You calculate a correlation (r) to be 0.017 with a 95% confidence interval (-0.2405, 0.2716). What does this suggest?

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