title: Issues of individual study analysis and synthesis of studies specific to evaluation of studies of periodontitis.
authors.affiliation: University of Illinois, College of Dentistry, Department of Periodontics, Chicago.
authors.forename: J M
authors.initials: JM
authors.lastname: Crawford
mesh_terms: D002986:Clinical Trials as Topic / Q000379:methods*; D006801:Humans; D010514:Periodontal Pocket / Q000473:pathology; D010517:Periodontics / Q000295:instrumentation; D010518:Periodontitis / Q000473:pathology / Q000628:therapy*; D015983:Selection Bias