title: An Assessment of the Risk of Bias in Randomized Controlled Trial Reports Published in Prosthodontic and Implant Dentistry Journals.
abstract: OBJECTIVE
  The objective of this study was to assess the risk of bias of randomized controlled trials (RCTs) published in prosthodontic and implant dentistry journals.
  
  
  METHODS
  The last 30 issues of 9 journals in the field of prosthodontic and implant dentistry (Clinical Implant Dentistry and Related Research, Clinical Oral Implants Research, Implant Dentistry, International Journal of Oral & Maxillofacial Implants, International Journal of Periodontics and Restorative Dentistry, International Journal of Prosthodontics, Journal of Dentistry, Journal of Oral Rehabilitation, and Journal of Prosthetic Dentistry) were hand-searched for RCTs. Risk of bias was assessed using the Cochrane Collaboration's risk of bias tool and analyzed descriptively.
  
  
  RESULTS
  From the 3,667 articles screened, a total of 147 RCTs were identified and included. The number of published RCTs increased with time. The overall distribution of a high risk of bias assessment varied across the domains of the Cochrane risk of bias tool: 8% for random sequence generation, 18% for allocation concealment, 41% for masking, 47% for blinding of outcome assessment, 7% for incomplete outcome data, 12% for selective reporting, and 41% for other biases.
  
  
  CONCLUSIONS
  The distribution of high risk of bias for RCTs published in the selected prosthodontic and implant dentistry journals varied among journals and ranged from 8% to 47%, which can be considered as substantial.
authors.forename: Spyridon N
authors.initials: SN
authors.lastname: Papageorgiou
authors.forename: Dimitrios
authors.initials: D
authors.lastname: Kloukos
authors.forename: Haralampos
authors.initials: H
authors.lastname: Petridis
authors.forename: Nikolaos
authors.initials: N
authors.lastname: Pandis
mesh_terms: D015982:Bias; D003757:Dental Implantation / Q000592:standards / Q000706:statistics & numerical data*; D018865:Dental Research / Q000592:standards / Q000706:statistics & numerical data; D006801:Humans; D010506:Periodicals as Topic / Q000592:standards / Q000706:statistics & numerical data; D011476:Prosthodontics / Q000592:standards / Q000706:statistics & numerical data*; D016032:Randomized Controlled Trials as Topic / Q000592:standards / Q000706:statistics & numerical data*; D015203:Reproducibility of Results; D018570:Risk Assessment