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Alternatives to Randomized Control Trial Designs for Community-Based Prevention Evaluation.

David Henry1, Patrick Tolan2, Deborah Gorman-Smith3

  • 1University of Illinois at Chicago, Chicago, IL, USA.

Prevention Science : the Official Journal of the Society for Prevention Research
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Summary

Evaluating community interventions is challenging when randomized controlled trials (RCTs) are not feasible. Alternative research designs can provide valid evidence of preventive effects, aligning with community values.

Keywords:
Community based researchResearch design

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Area of Science:

  • Public Health
  • Epidemiology
  • Community-Based Research

Background:

  • Evaluating preventive interventions can be complex, especially in community settings.
  • Randomized controlled trials (RCTs) are not always practical, culturally acceptable, or ethical for community-based research.

Purpose of the Study:

  • To explore alternative research designs to RCTs for evaluating community-based preventive interventions.
  • To identify methods that can validly estimate preventive effects and refute counterfactuals in community contexts.

Main Methods:

  • Discussion of alternative research designs, including regression discontinuity, interrupted time series, and roll-out randomization.
  • Presentation of procedures and practices to enhance the utility of these alternative designs.

Main Results:

  • Alternative designs, when strengthened, can provide valid evaluations of community interventions.
  • These methods offer benchmarks for valuing alternatives to RCTs by estimating preventive effects with limited bias.

Conclusions:

  • Alternative research designs offer viable options for evaluating community-based interventions.
  • Strengthening these designs ensures they align with community values and provide robust evidence.