Table 1.

Definitions of diagnostic impact, performance, and implementation outcomes

Impact: effect of diagnostic test implementation on public health or patient-oriented outcomes

Performance: operational characteristics of diagnostic tests in relation to sensitivity, specificity, predictive values, and concordance with other tests

Acceptability: patient’s and provider’s perceptions of a diagnostic test being satisfactory

Adoption: intention, decision, or action to use a diagnostic test intervention

Appropriateness: perception of how well the diagnostic intervention meets the needs in a specific context

Feasibility: the extent to which the diagnostic intervention can be successfully used in a specific context

Fidelity: to what degree the diagnostic intervention was implemented as originally planned

Cost: monetary effort of the use of a diagnostic intervention in a specific context

Penetration: to what extent the diagnostic intervention reached the expected users

Sustainability: to what extent the diagnostic intervention is maintained or institutionalized