A theory-based process evaluation alongside a randomised controlled trial of printed educational messages to increase primary care physicians' prescription of thiazide diuretics for hypertension [ISRCTN72772651]
Justin Presseau, Jeremy M Grimshaw, Jacqueline M Tetroe, Martin P Eccles, Jill J Francis, Gaston Godin, Ian D Graham, Janet E Hux, Marie Johnston, France Legare, Louise Lemyre, Nicole Robinson, Merrick Zwarenstein
IMPLEMENTATION SCIENCE | BIOMED CENTRAL LTD | Published : 2016
BACKGROUND: Pragmatic trials of implementation interventions focus on evaluating whether an intervention changes professional behaviour under real-world conditions rather than investigating the mechanism through which change occurs. Theory-based process evaluations conducted alongside pragmatic randomised trials address this by assessing whether the intervention changes theoretical constructs proposed to mediate change. The Ontario Printed Educational Materials (PEM) cluster trial was designed to increase family physicians' guideline-recommended prescription of thiazide diuretics. The trial found no intervention effect. Using the theory of planned behaviour (TPB), we hypothesised that change..View full abstract
Awarded by Canadian Institutes of Health Research (CIHR)
The funder, Canadian Institutes of Health Research (CIHR FRS KTS-73423), was not involved in the design of the study, data collection, analysis, and interpretation of data or in writing the manuscript.