Open AccessBias from historical control groups used in orthodontic research: a meta-epidemiological study
Author(s) -
Spyridon N. Papageorgiou,
Vasiliki Koretsi,
Andreas Jäger
Publication year - 2016
Publication title -
european journal of orthodontics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.252
H-Index - 84
eISSN - 1460-2210
pISSN - 0141-5387
DOI - 10.1093/ejo/cjw035
Subject(s) - meta analysis , medicine , sample size determination , confidence interval , random effects model , publication bias , epidemiology , clinical trial , randomized controlled trial , dentistry , statistics , mathematics
The validity of meta-analysis is dependent upon the quality of included studies. Here, we investigated whether the design of untreated control groups (i.e. source and timing of data collection) influences the results of clinical trials in orthodontic research.
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