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st: Checking to see if the association between two variables is linear or otherwise
From
Amal Khanolkar <[email protected]>
To
"[email protected]" <[email protected]>
Subject
st: Checking to see if the association between two variables is linear or otherwise
Date
Fri, 12 Oct 2012 21:56:35 +0000
Hi,
I'm trying to figure out if linear regression is the appropriate choice for my research question - I would like to analyze the association of BMI and education (BMI is continuous and education categorical). Ideally I would just run a linear regression with BMI as the outcome and education as the principle explanatory variable.
However my hypothesis is that low educated people are both likely to have a low and a high BMI, i.e. the association between education and BMI is probably more 'u shaped' than linear.
What is the best way to check if the association between a continuous and categorical variable is linear or otherwise...? Preferably, I would like to be able to plot such a shape using Stata.
Thanks,
/Amal.
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