Thanks for the info. Maybe when using the variable as a covariate it is good to dichotomize?
Say you wanted to adjust for energy (in METs) expended during work-related activity. Is it better to adjust for the continuous variable, energy, or is it better to adjust for quartiles of energy. (ie. Q1=office-type Q4=fireman) the quartiles(dichotomized) might cause a loss of information but it might "adjust" for the variable better by filtering out groups of people? am I wrong? . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
