• Janusz Kaczorowski, Larry W Chambers, Tina Karwalajtys, Lisa Dolovich, Barbara Farrell, Beatrice McDonough, Rolf Sebaldt, Cheryl Levitt, William Hogg, Lehana Thabane, Karen Tu, Ron Goeree, J Michael Paterson, Mamdouh Shubair, Tracy Gierman, Shannon Sullivan, and Megan Carter.
• Department of Family Practice, University of British Columbia, Canada. janusz.kaczorowski@familymed.ubc.ca
• Prev Med. 2008 Jun 1; 46 (6): 537-44.

ObjectiveHigh blood pressure is an important and modifiable cardiovascular disease risk factor that remains under-detected and under-treated. Community-level interventions that address high blood pressure and other modifiable risk factors are a promising strategy to improve cardiovascular health in populations. The present study is a community cluster-randomised trial testing the effectiveness of CHAP (Cardiovascular Health Awareness Program) on the cardiovascular health of older adults.MethodsThirty-nine mid-sized communities in Ontario, Canada were stratified by geographic location and size of the population aged >or=65 years and randomly allocated to receive CHAP or no intervention. In CHAP communities, residents aged >or=65 years were invited to attend cardiovascular risk assessment sessions held in pharmacies over 10 weeks in Fall, 2006. Sessions included blood pressure measurement and feedback to family physicians. Trained volunteers delivered the program with support from pharmacists, community nurses and local organisations.ResultsThe primary outcome measure is the relative change in the mean annual rate of hospital admission for acute myocardial infarction, congestive heart failure and stroke (composite end-point) among residents aged >or=65 years in intervention and control communities, using routinely collected, population-based administrative health data.ConclusionThis paper highlights considerations in design, implementation and evaluation of a large-scale, community-wide cardiovascular health promotion initiative.

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