title: The development of oncology treatment guidelines: an analysis of the National Guidelines Clearinghouse.
abstract: OBJECTIVE
  In the last 2 decades, guidelines have been developed to improve quality of patient care. A recent editorial of guideline development procedures suggested the process has significant limitations that affect their scientific validity.(1) This prompted us to review oncology treatment guidelines to determine if such limitations are widespread.
  
  
  METHODS
  We performed a review of oncology treatment guidelines registered at the National Guidelines Clearinghouse (www.guideline.gov). Each guideline was independently reviewed by 2 authors and the following criteria were assessed: coordinating organization, guideline panel composition, reporting conflict of interest, peer review, dissent, expiration date, PubMed citation, and evidence-based scoring and grading of recommendations. Disagreements were resolved by consensus in subsequent discussions.
  
  
  RESULTS
  Sixty-four guidelines were reviewed (39 [61%] were developed by a medical specialty society and 25 [39%] were developed by government agencies). Fifty (78%) guideline panels were multidisciplinary and 44 (69%) included individuals with epidemiologic and health services research expertise. Potential conflicts of interest were disclosed in 43 (67%) guidelines. Sixty (94%) guidelines underwent peer review, with external review in 31 (48%). Seventeen (27%) guidelines are indexed by PubMed. Fifty-one (80%) guidelines included evidence-based methodologies and 46 (72%) used evidence-based scoring of recommendations. Significant differences were observed according to coordinating organization (eg, disclosure of conflict of interest in 46% of guidelines developed by medical specialty societies versus 100% authored by government agencies [P <.0001]).
  
  
  CONCLUSIONS
  The majority of oncology-related treatment guidelines registered at the National Guidelines Clearinghouse satisfy most of the criteria for sound guideline development. Significant differences in these criteria were observed according to the coordinating organization that developed the guideline.
authors.affiliation: Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina.
authors.forename: Manisha
authors.initials: M
authors.lastname: Palta
authors.affiliation: Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina. Electronic address: w.robert.lee@duke.edu.
authors.forename: W Robert
authors.initials: WR
authors.lastname: Lee