Slide 40 Slide 41 Slide 42 Slide 43 The odds ratio here Interpretation of the odds ratio The rare disease assumption The odds ratio vs the risk ratio Odds ratios in crosssectional and cohort studies Example, wrinkle study Interpreting ORs when the outcome is common Interpreting ORs when the outcome is common For wrinkle study Sleep and hypertension study Practice95% CI (143, 616) Steps in SPSS Use Analyze Descriptive statistics Crosstabs to produce a Examples of measures of association include risk ratio (relative risk), rate ratio, odds ratio, and proportionate mortality ratio Risk ratio Definition of risk ratio A risk ratio (RR), also called relative risk, compares the risk of a health event (disease, injury, risk factor, or death) among one group with the risk among another group It does so by dividing the risk (incidence
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