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The Quality Improvement Demonstration Study: an example of evidence-based policy-making in practice
Riti Shimkhada1, John W Peabody, Stella A Quimbo
1Institute for Global Health, University of California San Francisco, San Francisco, California, USA. rshimkhada@psg.ucsf.edu
Health Research Policy and Systems
|March 28, 2008
Summary
This study demonstrates that large-scale randomized policy experiments, like the Quality Improvement Demonstration Study (QIDS), can successfully evaluate governmental health interventions. Rigorous policy experiments are crucial for evidence-based health policy and improving population health outcomes.
Area of Science:
- Health policy research
- Public health interventions
- Health services research
Background:
- Randomized trials are the gold standard for clinical practice evaluation.
- Rigorous studies are increasingly needed to assess policy effects.
- The Quality Improvement Demonstration Study (QIDS) was a large randomized policy experiment to evaluate governmental health interventions.
Purpose of the Study:
- To evaluate the impact of large-scale governmental policy interventions using a randomized experimental design.
- To inform health policy through rigorous scientific investigation.
- To assess the effects of two specific policy reforms on healthcare delivery and child health status.
Main Methods:
- A randomized controlled trial design was implemented, randomizing communities into two policy interventions or a control group.
- Interventions included expanded insurance coverage for children and performance-based payments for healthcare providers.
- Data were collected through household surveys, patient exit interviews, facility surveys, and clinical vignettes, with analysis using difference-in-difference estimation.
Main Results:
- Numerous challenges were encountered and addressed, including formalizing the experimental design within existing infrastructure, securing funding, accounting for biases, and implementing broad data collection.
- Sustainable policy interventions were introduced based on the reform agenda.
- Real-time results were provided to policymakers through various channels.
Conclusions:
- Large, prospective, randomized controlled policy experiments can be successfully implemented at a national level as part of sectoral reform.
- Evidence-based health policy requires opportunity, trust, strong collaboration, and appropriate timing for policy experiments.
- This study supports the successful translation of scientific findings into community-level improvements and advocates for higher standards in project evaluation and policymaking.
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