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 LeadersPeter Katzmarzyk Queen’s University Bruce Reeder University of

SaskatchewanTeam MembersSusan Elliott McMaster UniversityMichel Joffrés Simon Fraser UniversityDavid MacLean Simon Fraser UniversityPunam Pahwa University of

SaskatchewanKim Raine University of Alberta

Post-Doctoral Fellows and Graduate Students

 

Susan Brien, Postdoc (2004-06) Queen’s UniversityCaitlin Mason (PhD 2005 - ) Queen’s UniversityChris Ardern (PhD 2002- ) Queen’s UniversityKatya Herman (PhD 2005 - ) Queens’ UniversityShirley Bryan (PhD, 2005 - ) Queen’s UniversityDan Harrington (MA 2005 - ) McMaster UniversityTheodora Pouliou (PhD 2005 - ) McMaster UniversityAlomgir 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

0

5

10

15

20

25

Mal

ta

U.S.A

.

Wale

s

Gre

enla

nd

Canad

a

Spain

England

Portugal

Italy

Gre

ece

Scotla

nd

Slove

nia

Finla

nd

Irela

nd

Hungar

y

Mac

edonia

Austria

Norway

Croat

ia

Belgiu

m (F

rench

)

France

Denm

ark

Ger

man

y

Swed

en

Isra

el

Belgiu

m (F

lem

ish)

Czech

Repu

blic

Switz

erla

nd

Poland

Nether

lands

Estonia

Ukrai

ne

Latvi

a

Russia

Lithuan

ia

Overweight Obese

Pre

vale

nce

(%

)

Janssen et al. Obes Rev 2005:6:123-132.

Childhood Overweight and Obesity in 34 Countries

Source: Tjepkema, 2005.

0

5

10

15

20

25

Men Women

1978-79

2004

Pre

vale

nce

(%

)Adult Obesity in Canada

Obesity and Mortality in Canada

Katzmarzyk & Ardern. Can J Public Health 2004;95:16-20.

2000

2500

3000

3500

4000

4500

1980 1985 1990 1995 2000 2005

Year of Survey

Ove

rwei

gh

t &

Ob

esit

yR

elat

ed D

eath

s

5.1%

6.8%

8.4%

8.7%

9.4%9.3%

Source: IOTF

• Health • Morbidity• Mortality

Risk Factors

Aims and ObjectivesAim 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 ObjectivesAim 2

To examine the influence of obesity and other chronic disease risk factors on mortality.

Aims and ObjectivesAim 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

Baseline1986-92

Follow-up2006

Individual-Level PredictorsMeasured Obesity PhenotypesMeasured Risk FactorsDemographic Data

Community-Level Predictors1991 Census Variables

- income- income inequality- housing density

Geographic Data

All-cause and CVDMortality

14 – 20 y

Overview of data flow and linkage in the Canadian Heart Health Surveys Follow-up Study

Existing anonymized cross-sectional CHHS database

Linkage with 1991 Census by Third Party (A. Edwards CHHS Database Centre, Memorial University)

Addition of postal codes supplied fromprovinces to A. Edwards, CHHS Database Centre,

Memorial University

Anonymized cross-sectional database containing ecological-level data

Linkage with Canadian Mortality Databaseby Statistics Canada

Anonymized longitudinal database containing

ecological-level and mortality outcome data

Personal information strippedoff by Statistics Canada

Addition of personal informationsupplied by provinces to Statistics Canada

Progress to Date

PublicationsRefereed 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).

PublicationsAbstracts

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.caBruce.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