I am comparing the glomerular filtration rate (continuous) measured by creatinine clearance (gold standard, x) and by two other methods (new methods, y)
I have a linear regression line x against y1 and another model x agains y2
I dont really know how to compare model 1 (x and alternative method 1) against model 2 (x and alternative model 2)
I know we should compare beta (intercept) and slope (r) and bias, but not sure how to do it in stata
looked for other posts about it but could not find a good answer, hope this is not a duplicate
thanks for your help
francois