Table 1

RE-AIM dimensions and definitions

LevelDimensionDefinition
IndividualReach
  1. Participation rate among eligible individuals

  2. Representativeness of participants

IndividualEfficacy/Effectiveness
  1. Effects on primary outcome measures

  2. Impact on quality of life and negative outcomes

SettingAdoption
  1. Representativeness of settings participating

  2. Participation rate among possible settings

SettingImplementation
  1. Extent to which intervention delivered as intended

  2. Time and costs of intervention

BothMaintenance
  1. (Individual) Long-term effects of intervention (≥6 months)

  2. (Individual) Impact of attrition on outcomes

  3. (Setting) Extent of institutionalization, continuation or modification of treatmen