search for: ll_gee_2

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2011 Feb 03
0
Generalized Estimating Equations and a Reviewer Question I can’t answer
...34 EJ5 0.003541 0.002122 EJ5 0.003355 0.002099 EJ5 0.003149 0.00211 EJ5 0.002881 0.001591 EJ5 0.001469 0.001559 EJ5 0.001191 0.002259 EJ5 0.000518 0.001589 EJ5 0.000689 0.001348 . . . etcetera. I used this command to generate an estimate of the correlation coefficient: ll_gee_2 <- geeglm(MRI~QAR, id = ID, family = gaussian, corstr ="exch") This yielded a very significant but moderate correlation between the two methods, in general agreement with the results of a linear regression done on the means of the values of the two estimates in their ROIs. Now, the...