Pretend you want to see how fat relates to cancer risk fat Kcal cancer 1 2 100 2 4 120 3 6 130 4 8 140 5 10 150 6 12 160 7 14 170 8 16 180 9 18 190 10 20 200
You have to adjust for KCal, but how is this done, is the following the BEST way? Method: Regress Fat on KCal and take the residuals as follows Coefficients Standard Error Intercept 0 0 fat 2 0 so calories=2*fat and therefore your adjusted fat intake of person #1 is 1*0.5=0.5 Is doing a univariate regression between the variable you want to adjust for and your predictor the only way to adjust for values as above? Studies often cite how they have "adjusted" for KCal, is this the way they do it, they usually do not specify the method. ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at http://jse.stat.ncsu.edu/ =================================================================