Health and Quality of Life Outcomes This Provisional PDF corresponds to the article as it appeared upon acceptance Fully formatted PDF and full text (HTML) versions will be made available soon Determinants of quality of life in adults with type and type diabetes Health and Quality of Life Outcomes 2011, 9:115 doi:10.1186/1477-7525-9-115 Ikuyo Imayama (iimayama@fhcrc.org) Ronald C Plotnikoff (ron.plotnikoff@newcastle.edu.au) Kerry S Courneya (kerry.courneya@ualberta.ca) Jeffrey A Johnson (jeff.johnson@ualberta.ca) ISSN Article type 1477-7525 Research Submission date April 2011 Acceptance date 19 December 2011 Publication date 19 December 2011 Article URL http://www.hqlo.com/content/9/1/115 This peer-reviewed article was published immediately upon acceptance It can be downloaded, printed and distributed freely for any purposes (see copyright notice below) Articles in HQLO are listed in PubMed and archived at PubMed Central For information about publishing your research in HQLO or any BioMed Central journal, go to http://www.hqlo.com/authors/instructions/ For information about other BioMed Central publications go to http://www.biomedcentral.com/ © 2011 Imayama et al ; licensee BioMed Central Ltd This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited Determinants of quality of life in adults with type and type diabetes Ikuyo Imayama1, Ronald C Plotnikoff 2, Kerry S Courneya3, Jeffrey A Johnson Centre for Health Promotion Studies, School of Public Health, University of Alberta, (116 Street and 85 Avenue), Edmonton, (T6G 2B3), Canada School of Education, University of Newcastle, Callaghan, (2308), Australia Faculty of Physical Education, University of Alberta, (116 Street and 85 Avenue), Edmonton, (T6G 2B3), Canada School of Public Health, University of Alberta, (116 Street and 85 Avenue), Edmonton, (T6G 2B3), Canada Email addresses: II: iimayama@fhcrc.org RCP: ron.plotnikoff@newcastle.edu.au KSC: kerry.courneya@ualberta.ca JAJ: jeff.johnson@ualberta.ca Corresponding author: Ronald Plotnikoff, PhD Professor and Chair in Physical Activity and Population Health Priority Research Centre in Physical Activity and Nutrition, University of Newcastle, National Health & Medical Research Council Senior Research Fellow Callaghan, NSW 2308, Australia e-mail: ron.plotnikoff@newcastle.edu.au ABSTRACT Background Limited evidence exists on the determinants of quality of life (QoL) specific to adults with type diabetes (T1D) Further, it appears no study has compared the determinants of QoL between T1D and type diabetes (T2D) groups The objectives of this study were to examine: (1) determinants of QoL in adults with T1D; and, (2) differences in QoL determinants between T1D and T2D groups Methods The Alberta Longitudinal Exercise and Diabetes Research Advancement (ALEXANDRA) study, a longitudinal study of adults with diabetes in Alberta, Canada Adults (18 years and older) with T1D (N=490) and T2D (N=1,147) provided information on demographics (gender, marital status, education, and annual income), personality (activity trait), medical factors (diabetes duration, insulin use, number of comorbidities, and body mass index), lifestyle behaviors (smoking habits, physical activity, and diet), health-related quality of life (HRQL) and life satisfaction Multiple regression models identified determinants of HRQL and life satisfaction in adults with T1D These determinants were compared with determinants for T2D adults reported in a previous study from this population data set Factors significantly associated with HRQL and life satisfaction in either T1D or T2D groups were further tested for interaction with diabetes type Results In adults with T1D, higher activity trait (personality) score (β = 0.28, p