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The Canadian Heart Health Surveys Follow-up Study New Emerging Team Project www.chhsnet.ca. Purpose
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The Canadian Heart Health Surveys Follow-up Study New Emerging Team Project www.chhsnet.ca
Purpose To develop a national research program investigating the impact of individual and community level factors on relationships between obesity, other chronic disease risk factors, and mortality through the development of a new longitudinal database.
Funding The Canadian Heart Health Surveys Follow-up Study is a five-year New Emerging Team (NET) project funded by the Canadian Institutes for Health Research (Institute of Nutrition, Metabolism and Diabetes) and the Heart and Stroke Foundation of Canada. The project was initiated in 2004 with the title of: “Understanding the Individual and Socio-Environmental Health Risks of Obesity”
Team Members Team Leaders Peter Katzmarzyk Queen’s University Bruce Reeder University of Saskatchewan Team Members Susan Elliott McMaster University Michel Joffrés Simon Fraser University David MacLean Simon Fraser University Punam Pahwa University of Saskatchewan Kim Raine University of Alberta
Post-Doctoral Fellows and Graduate Students Susan Brien, Postdoc (2004-06) Queen’s University Caitlin Mason (PhD 2005 - ) Queen’s University Chris Ardern (PhD 2002- ) Queen’s University Katya Herman (PhD 2005 - ) Queens’ University Shirley Bryan (PhD, 2005 - ) Queen’s University Dan Harrington (MA 2005 - ) McMaster University Theodora Pouliou (PhD 2005 - ) McMaster University Alomgir Hossain (PhD 2005 - ) University of Saskatchewan
Advisory Board Julie McAuley Health Statistics Division, SC Marc Hamel Health Statistics Division, SC Gregory Taylor Chronic Disease Prevention Division, HC Phil Connelly Department of Medicine, U Toronto Larry Svenson Alberta Health & Wellness Elinor Wilson Canadian Public Health Association
Childhood Overweight and Obesity in 34 Countries Prevalence (%) Janssen et al. Obes Rev 2005:6:123-132.
Adult Obesity in Canada Prevalence (%) Source: Tjepkema, 2005.
Obesity and Mortality in Canada 9.4% 9.3% 8.4% 8.7% 6.8% 5.1% Katzmarzyk & Ardern. Can J Public Health 2004;95:16-20.
Health • Morbidity • Mortality Risk Factors
Aims and Objectives Aim 1 To investigate the influence of social and environmental determinants of health on the relationship between obesity and other concurrent chronic disease risk factors.
Aims and Objectives Aim 2 To examine the influence of obesity and other chronic disease risk factors on mortality.
Aims and Objectives Aim 3 To identify the heterogeneities associated with social and environmental determinants of health in the relationships between obesity, chronic disease risk factors and mortality.
CHHS Cohort Study Individual-Level Predictors Measured Obesity Phenotypes Measured Risk Factors Demographic Data All-cause and CVDMortality Community-Level Predictors 1991 Census Variables - income - income inequality - housing density Geographic Data Follow-up 2006 Baseline 1986-92 14 – 20 y
Linkage with Canadian Mortality Database by Statistics Canada Addition of personal information supplied by provinces to Statistics Canada Anonymized longitudinal database containing ecological-level and mortality outcome data Linkage with 1991 Census by Third Party (A. Edwards CHHS Database Centre, Memorial University) Existing anonymized cross-sectional CHHS database Personal information stripped off by Statistics Canada Addition of postal codes supplied from provinces to A. Edwards, CHHS Database Centre, Memorial University Anonymized cross-sectional database containing ecological-level data Overview of data flow and linkage in the Canadian Heart Health Surveys Follow-up Study
Publications Refereed Papers Mason C. and P.T. Katzmarzyk. Application of obesity treatment algorithms to the Canadian population. European Journal of Clinical Nutrition 2005;59:797-800. Ardern C.I., P.T. Katzmarzyk, I. Janssen, T.S. Church and S.N. Blair. Adult Treatment Panel III guidelines and cardiovascular disease mortality. Circulation 2005;112:1481-88. Mason C., P.T. Katzmarzyk and S.N. Blair. Eligibility for obesity treatment and risk of all-cause and cardiovascular disease mortality risk in men. Obesity Research (In Press: Accepted on July 13, 2005). Katzmarzyk P.T. and C. Mason. Prevalence of class II and III obesity in Canada. Canadian Medical Association Journal (In Press: Accepted on September 8, 2005).
Publications Abstracts Ardern C.I. and P.T. Katzmarzyk. Regional variation in the metabolic syndrome in Canada. Canadian Journal of Cardiology 20 (Supplement D): 122D. Canadian Cardiovascular Congress, Calgary, AB, October, 2004. Katzmarzyk P.T. Physical activity and the metabolic syndrome in Canada. Canadian Journal of Cardiology 20 (Supplement D): 94D. Canadian Cardiovascular Congress, Calgary, AB, October, 2004. Mason C., C.I. Ardern and P.T. Katzmarzyk. Application of obesity treatment algorithms to the Canadian population. Canadian Journal of Cardiology 20 (Supplement D): 119D. Canadian Cardiovascular Congress, Calgary, AB, October, 2004. Mason C., P.T. Katzmarzyk and S.N. Blair. Recommendations for obesity treatment and risk of mortality in men. Obesity Research 12 (October Supplement): A9, Annual Meetings of the North American Society for the Study of Obesity, Las Vegas, November, 2004. Katzmarzyk P.T. and C.L. Craig. Independent effects of waist circumference and physical activity on mortality in women. Medicine and Science in Sports and Exercise 37:5 (Supplement): S385. American College of Sports Medicine Annual Meeting, Nashville, TN, May 2005. Brien S.E., I. Janssen and P.T. Katzmarzyk. Physical fitness and the metabolic syndrome in NHANES 1999-2002. Annual Meetings of the Canadian Society for Exercise Physiology, Gatineau, Quebec, November 2005. Mason C., P.T. Katzmarzyk, C.L. Craig and L. Gauvin. Self-rated health and mortality among Canadians. Annual Meetings of the Canadian Society for Exercise Physiology, Gatineau, Quebec, November 2005. Katzmarzyk P.T. Impact of physical activity and physical fitness on pediatric reference data for obesity. Annual Meetings of the Canadian Society for Exercise Physiology, Gatineau, Quebec, November 2005. Brien S.E. and P.T. Katzmarzyk. Metabolic syndrome and history of cardiovascular events. Canadian Cardiovascular Congress, Montreal, Quebec. October 2005.
Website www.chhsnet.ca
Expanding the NET • Additional data sources • New collaborators • Pilot and ancillary project funding • Graduate students and post-docs Contact: Lindy.Mechefske@queensu.ca katzmarz@post.queensu.ca Bruce.Reeder@usask.ca
The Canadian Heart Health Surveys Follow-up Study is a New Emerging Team, funded by the Canadian Institutes for Health Research and the Heart and Stroke Foundation of Canada www.chhsnet.ca