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PubMed · 6494450

Predicting certification examination scores in a college-based program.

J H Macomber·M K Sanders
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Abstract

Factors that may predict student performance on the ARRT examination are discussed and statistically examined. For students in the program studied, performance on a simulated registry and grade point average proved to be statistically significant predictors of success. Implications of such models for student motivation are addressed, and a general need to explain differences in student performance is discussed as a step needed to facilitate examination of differences in various educational programs.

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J H Macomber, M K Sanders. Predicting certification examination scores in a college-based program.. https://pubmed.ncbi.nlm.nih.gov/6494450/

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PubMed2007

Assessing the American Board of Orthodontics objective grading system: digital vs plaster dental casts.

INTRODUCTION: The purposes of this study were to determine whether the American Board of Orthodontics objective grading system (ABO OGS) can be assessed accurately from digital dental casts and whether there are statistical differences between digital and plaster dental casts in scoring the ABO OGS. METHODS: Thirty posttreatment plaster dental casts were selected and scanned by OrthoCAD (Cadent, Carlstadt, NJ) to produce 30 corresponding digital dental casts. The plaster and digital casts were compared by using the criteria of the ABO OGS. Because the data were ordinal, a nonparametic statistical analysis was used. RESULTS: The Wilcoxon test for paired samples showed significant differences between the plaster and digital casts for occlusal contacts, occlusal relationships, and total scores (P <.05). No significant differences were found for alignment, marginal ridges, overjet, and interproximal contacts. Buccolingual inclination was not included in this study because of inability to perform proper measurements with the OrthoCAD program. Mean differences of points deducted ranged from .03 point for marginal ridges to 5.07 points for the total score. The variable with the most points deducted related to occlusal relationships, and the fewest points were deducted for interproximal contacts. CONCLUSIONS: Based on this study, the current OrthoCAD program (version 2.2) was not adequate for scoring all parameters as required by the ABO OGS.

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