Introduction
In 2011, the Agence de la santé et des services sociaux de Montréal
(ASSSM), in partnership with the region’s Centres de santé et de services sociaux
(CSSS), coordinated the implementation of a program on cardiometabolic risk based on
the Chronic Care Model. The program, intended for patients suffering from diabetes or
hypertension, involved a series of individual follow-up appointments, group classes and
exercise sessions. Our study assesses the impact on patient health outcomes of variations
in the implementation of some aspects of the program among the six CSSSs taking
part in the study.
Methods
The evaluation was carried out using a quasi-experimental “before and after”
design. Implementation variables were constructed based on data collected during the
implementation analysis regarding resources, compliance with the clinical process set
out in the regional program, the program experience and internal coordination within
the care team. Differences in differences using propensity scores were calculated for
HbA1c results, achieving the blood pressure (BP) target, and two lifestyle targets (exercise
level and carbohydrate distribution) at the 6- and 12-month follow-ups, based on
greater or lesser patient exposure to the implementation of various aspects of the program
under study.
Results
The results focus on 1185 patients for whom we had data at the 6-month follow-
up and the 992 patients from the 12-month follow-up. The difference in differences
analysis shows no clear association between the extent of implementation of the various
aspects of the program under study and patient health outcomes.
Conclusion
The program produces effects on selected health indicators independent of
variations in program implementation among the CSSSs taking part in the study. The
results suggest that the effects of this type of program are more highly dependent on the
delivery of interventions to patients than on the organizational aspects of its
implementation.