QUALITY OF LIFE IN PATIENTS WITH END-STAGE RENAL DISEASE OVER TIME: THE IMPACT OF DIALYSIS MODALITY AND OTHER IMPORTANT DETERMINANTS Braden Manns 1,2,3 , Jeffrey A. Johnson 3,4 ,Ken Taub 1 ,Garth Mortis 1 , William A. Ghali 2,3,5 , Cam Donaldson 2,3,6 Working Paper 02-05 1. Department of Medicine, Division of Nephrology, University of Calgary 2. Department of Community Health Sciences, University of Calgary 3. Institute of Health Economics, Edmonton, Alberta 4. Faculty of Public Health Sciences, University of Alberta 5. Department of Medicine, Division of General Internal Medicine, University of Calgary 6. Department of Economics, University of Calgary Legal Deposit 2000 National Library of Canada ISSN 1481-3823 August 2002