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Updated: Jul 12, 2026
07:57
Accuracy in Dental Medicine, A New Way to Measure Trueness and Precision
Published on: April 29, 2014
Statistical Reporting Quality in Dental Research: A Comparative Analysis by Journal Impact and Study Design
Manuel Antonio Mattos-Vela1, Martha Cecilia Rodríguez-Vargas1, Teresa Angélica Evaristo-Chiyong1
1Faculty of Dentistry, SAETA Research Group, Universidad Nacional Mayor de San Marcos, Lima, Peru.
Contemporary Clinical Dentistry
|July 10, 2026
Summary
Statistical reporting quality in dental journals is low, with frequent errors in P values and sample size justification. Observational studies exhibit better statistical reporting than experimental ones.
Area of Science:
- Dental research
- Statistical reporting quality
- Journal impact factor
Background:
- Assessing statistical reporting quality in dental publications is crucial.
- Journal impact (quartile 1 vs. quartile 3) may influence report quality.
- Study design (observational vs. experimental) could affect statistical reporting.
Purpose of the Study:
- To evaluate the statistical report quality of dental articles.
- To determine if journal impact factor influences statistical reporting quality.
- To assess the relationship between study design and statistical report quality.
Main Methods:
- Random sample of original articles from four general dentistry journals (two high-impact, two medium-impact).
- Categorization of study designs as observational, experimental, or other.
- Assessment of statistical error indicators by two independent statisticians.
Main Results:
- A high prevalence of statistical errors (85.6%) was observed across articles.
- Articles in medium-impact journals showed a slightly higher error rate (91.7%) than high-impact journals (83.7%).
- A significant relationship was found between study design and the presence/number of statistical errors (P=0.009, P=0.011).
Conclusions:
- Dental articles exhibit low statistical reporting quality, with common errors.
- Inaccurate P value reporting and lack of sample size justification are prevalent issues.
- Observational studies demonstrate superior statistical reporting quality compared to experimental studies.
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