Adjusted values for plotting

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Sahil Bajaj 2018-7-17

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https://ww2.mathworks.cn/matlabcentral/answers/410818-adjusted-values-for-plotting

评论： Jeff Miller 2018-7-18

Hi,

I have two variable X and Y. Correlation between these two is r = 0.2 at p = 0.51 (non-significant). If I include covariates age and sex then my partial correlation is 0.79 at p = 0.02 (significant). I am interested in reporting the partial correlation/p-value along with the linear plot. How can I calculate adjusted X and Y values i.e., after including the covariates so that I can plot the adjusted values which are giving me correlation is 0.79 at p = 0.02?

Thanks.

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Jeff Miller 2018-7-18

Rather than adjusting for sex, you might display separate X/Y plots for the males and females. This could be easier to understand than a plot of adjusted values, and it does control for sex by considering each sex in isolation. Harder to do with age, but you could perhaps break your sample into 3 age groups and make six plots with young, middle-aged, old X male/female. After all, you have the overall numerical summaries (e.g., .79, .02) and just need the plots so that people can visualize the relationships.

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