Transcription of Unit 4 Categorical Data Analysis - UMass
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Unit 4 Categorical Data Analysis - UMass
BIOSTATS 640 - Spring 2020 4. Categorical Data Analysis - R Users Page 1 of 78 Nature Population/ Sample Observation/ Data Relationships/ Modeling Analysis / Synthesis Unit 4 Categorical Data Analysis Don t ask what it means, but rather how it is used - L. Wittgenstein Is frequency of exercise associated with better health? Is the proportion of adults who visit their doctor more than once a year, significantly lower among the frequent exercisers than among the non-exercisers? Is alcohol associated with higher risk of lung cancer? Is the apparent association misleading because we have failed to account for the relationship between drinking and smoking?
The association of coffee consumption with myocardial infarction (MI) is different (modified by), depending on smoking status. I Coffee Consumption.184211 micase 0=lt 5 cups/day 1=ge 5 cups/day I Coffee Consumption 0.28 0=lt 5 cups/day 1=ge 5 cups/day I Coffee Consumption 0.666667 micase 0=lt 5 cups/day 1=ge 5 cups/day
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