Cost-effectiveness of a school-based health promotion program in Canada: A life-course modeling approach

PLoS One. 2017 May 18;12(5):e0177848. doi: 10.1371/journal.pone.0177848. eCollection 2017.

Abstract

Background: The Alberta Project Promoting active Living and healthy Eating in Schools (APPLE Schools) has been recognized as a "best practice" in preventing childhood obesity. To inform decision making on the economic implications of APPLE Schools and to justify investment, we evaluated the project's cost-effectiveness following a life-course approach.

Methods: We developed a state transition model for the lifetime progression of body weight status comparing elementary school students attending APPLE Schools and control schools. This model quantified the lifetime impact of APPLE Schools in terms of prevention of excess body weight, chronic disease and improved quality-adjusted life years (QALY), from a school system's cost perspective. Both costs and health outcomes were discounted to their present value using 3% discount rate.

Results: The incremental cost-effectiveness ratio(ICER) of APPLE schools was CA$33,421 per QALY gained, and CA$1,555, CA$1,709 and CA$14,218 per prevented person years of excess weight, obesity and chronic disease, respectively. These estimates show that APPLE Schools is cost effective at a threshold of ICER < CA$50,000. In probabilistic sensitivity analysis, APPLE Schools was cost effective more than 64% of the time per QALY gained, when using a threshold of ICER<CA$50,000, and more than 93% of the time when using a threshold of ICER<CA$100,000.

Conclusion: School-based health promotion, such as APPLE Schools is a cost-effective intervention for obesity prevention and reduction of chronic disease risk over the lifetime. Expanding the coverage and allocating resources towards school-based programs like the APPLE Schools program, is likely to reduce the public health burden of obesity and chronic diseases.

MeSH terms

  • Body Weight
  • Canada
  • Child
  • Cost-Benefit Analysis*
  • Humans
  • Markov Chains
  • Models, Theoretical*
  • Outcome Assessment, Health Care
  • Probability
  • Quality-Adjusted Life Years
  • School Health Services / economics*
  • Schools

Grant support

The present study was funded through the Collaborative Research and Innovation Opportunities (CRIO) Team program from Alberta Innovates Health Solutions awarded to Paul J. Veugelers (PJV) and Arto Ohinmaa (AO). J. A. Johnson is a Centennial Professor with the School of Public Health. The REAL kids Alberta evaluation was funded through a contract with Alberta Health. APPLE Schools was funded through a philanthropic donation to the School of Public Health at the University of Alberta. The research was funded by an operating grant by the Canadian Institutes for Health Research, Heart and Stroke Foundation of Canada and Canadian Population Health Initiative and a Canada Research Chair in Population Health and AIHS Health Scholarship to Dr. Paul J. Veugelers. All interpretations and opinions in the present study are those of the authors.