Title: 3255 - Validity and Reliability of Caries Related Oral Health Indicator
Noortje Akveld (Presenter)
Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, The Netherlands
Josef Bruers, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, The Netherlands
Geert van der Heijden, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, The Netherlands
Objectives: In this study the validity and reliability of a caries related oral health indicator (CROH) was tested. This indicator is intended to support dentists in assessing and monitoring the oral health status of young people in dental practice. CROH is based on age-depending caries experience (CE) and current caries activity (CA) and combines those 2 variables into 6 health status categories.
Methods: An online survey and Delphi-method was used, starting February 2016. 18 Dutch experts in clinical and academic field were invited. 6 Clinical vignettes depicting a specific patient for each health status category were used in a 3-round online survey to assess inter and intra expert reliability of scoring CROH. A 2-round Delphi-method was used to assess validity of the indicator, discussing 10 Likert type items and 3 open statements on the theoretical assumptions of CROH. Descriptive analyses were used, 80% agreement limits were pre-set to reach inter expert reliability and expert consensus on validity. Cohen’s kappa was computed for intra expert reliability.
Results: 14 Experts participated and reached inter expert agreement on scoring CE in each vignette (mean 95.3%). No inter expert agreement on scoring CA, respectively CROH was reached (mean 58.5%, range 29-93% and 56.1%, 29-93%). Intra expert agreement of scoring CROH was fair (mean 0.65 Cohen’s kappa). Consensus on expert panel validity was reached on 8 out of 10 statements.
Conclusions: In this study it was concluded that by simplifying the complex and dynamic caries process in order to make measuring CROH feasible, its construct validity and intra expert reliability in clinical vignettes remained sufficient. However, scoring CA in CROH by means of the clinical vignettes appeared not to be optimally reliable.
This abstract is based on research that was funded entirely or partially by an outside source:
Funding of KNMT (Royal Dutch Dental Association) was received. There are no conflicts of interest.
The submitter must disclose the names of the organizations with which any author have a relationship, the nature of the relationship, and the clinical or research area involved. The following is submitted: none