Publication | Closed Access
The development of the PAR Index (Peer Assessment Rating): reliability and validity
635
Citations
0
References
1992
Year
Intraoral ScannerEngineeringSocial InfluenceSurgeryPsychometricsResearch EvaluationOrthopaedic SurgeryPsychologyProgram EvaluationPar IndexNormal AlignmentPerformance AssessmentOrthodontic TreatmentStatisticsReliabilityOutcomes ResearchOcclusionEvaluation MeasurePeer AssessmentOrthodontic ResearchSingle Summary ScoreEducational AssessmentMedicineSelf-assessmentSurvey Methodology
The PAR Index was created to give a single summary score for all occlusal anomalies in malocclusion. The index weights its components based on current British orthodontic opinion, with flexibility to adapt to future or international standards. The PAR Index reliably quantifies deviation from normal occlusion, shows significant improvement after treatment, and provides uniform, standardized assessment with high inter‑ and intra‑examiner reliability (ICC > 0.91).
The PAR Index has been developed to provide a single summary score for all the occlusal anomalies which may be found in a malocclusion. The score provides an estimate of how far a case deviates from normal alignment and occlusion. The difference in scores between the pre- and post-treatment cases reflects the degree of improvement and, therefore, the success of treatment. Excellent reliability was exhibited within and between examiners (Intraclass Correlation Coefficient, R greater than 0.91). The components of the PAR Index have been weighted to reflect current British orthodontic opinion and is flexible in that the weightings could be changed to reflect future standards and standards currently being achieved in other countries. The PAR Index offers uniformity and standardization in assessing the outcome of orthodontic treatment.