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Knowledge of evidence-based research methodology amongst orthodontic postgraduate residents in four universities: An international survey


Papageorgiou, Spyridon N; Koletsi, Despina; Patcas, Raphael; Seehra, Jadbinder; Cobourne, Martyn T; Will, Leslie A; Eliades, Theodore (2022). Knowledge of evidence-based research methodology amongst orthodontic postgraduate residents in four universities: An international survey. International Orthodontics, 20(1):100609.

Abstract

AIM
The aim of this international survey was to assess knowledge concerning the design, conduct, critical appraisal and synthesis of clinical studies among senior orthodontic postgraduate residents.
MATERIALS AND METHODS
Senior postgraduate residents from four universities in Europe and the United States were invited to complete a custom questionnaire. The overall correct answer score and proportion of residents correctly answering each of the 10 questions within the survey were analysed with descriptive statistics, analysis-of-variance, chi-squares test and linear regression at 5%.
RESULTS
A total of 46 residents with mean age of 30.4 years scored an overall % correct score of 48.8%±13.8%, with the % of correct answers to each question ranging from 7 to 89%. The worst-answered questions pertained to correctly characterizing sensitivity and specificity (7%), number needed to treat (9%), credibility of trial synthesis in meta-analysis (35%) and publication bias (37%). The vast majority of postgraduate students could correctly identify entities that can be blinded in a randomized trial (89%), statistical power of a trial (74%) and proper methods for random allocation sequence (67%). No statistically significant differences were found among the four included universities, while residents having obtained another degree apart from dentistry scored better than others (+9.5%; 95% confidence interval: 0.6% to 18.5%; P=0.04).
CONCLUSIONS
Postgraduate residents in orthodontics possessed moderate knowledge on evidence-based methodology. Efforts should be reinforced to assimilate research methodology perspectives in the postgraduate curricula of universities, in order to further augment critical training of orthodontic specialists.

Abstract

AIM
The aim of this international survey was to assess knowledge concerning the design, conduct, critical appraisal and synthesis of clinical studies among senior orthodontic postgraduate residents.
MATERIALS AND METHODS
Senior postgraduate residents from four universities in Europe and the United States were invited to complete a custom questionnaire. The overall correct answer score and proportion of residents correctly answering each of the 10 questions within the survey were analysed with descriptive statistics, analysis-of-variance, chi-squares test and linear regression at 5%.
RESULTS
A total of 46 residents with mean age of 30.4 years scored an overall % correct score of 48.8%±13.8%, with the % of correct answers to each question ranging from 7 to 89%. The worst-answered questions pertained to correctly characterizing sensitivity and specificity (7%), number needed to treat (9%), credibility of trial synthesis in meta-analysis (35%) and publication bias (37%). The vast majority of postgraduate students could correctly identify entities that can be blinded in a randomized trial (89%), statistical power of a trial (74%) and proper methods for random allocation sequence (67%). No statistically significant differences were found among the four included universities, while residents having obtained another degree apart from dentistry scored better than others (+9.5%; 95% confidence interval: 0.6% to 18.5%; P=0.04).
CONCLUSIONS
Postgraduate residents in orthodontics possessed moderate knowledge on evidence-based methodology. Efforts should be reinforced to assimilate research methodology perspectives in the postgraduate curricula of universities, in order to further augment critical training of orthodontic specialists.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Center for Dental Medicine > Clinic for Orthodontics and Pediatric Dentistry
Dewey Decimal Classification:610 Medicine & health
Scopus Subject Areas:Health Sciences > Orthodontics
Language:English
Date:March 2022
Deposited On:18 Jan 2023 09:52
Last Modified:19 Jan 2023 21:00
Publisher:Elsevier
ISSN:1761-7727
OA Status:Hybrid
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1016/j.ortho.2022.100609
PubMed ID:35093271
  • Content: Published Version
  • Licence: Creative Commons: Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)