Effects of the end point adjudication process on the results of the perindopril protection against recurrent stroke study (PROGRESS)

Toshiharu Ninomiya, Geoff Donnan, Neil Anderson, Chris Bladin, Brian Chambers, Gary Gordon, Norman Sharpe, John Chalmers, Mark Woodward, Bruce Neal

研究成果: Contribution to journalArticle査読

23 被引用数 (Scopus)

抄録

BACKGROUND AND PURPOSE-: End point adjudication committees (EPAC) are widely used in large-scale clinical trials to ensure the robustness of diagnosis for end points. METHODS-: The Perindopril Protection Against Recurrent Stroke Study (PROGRESS) was a double-blind randomized trial of blood pressure lowering in 6105 participants with pre-existing cerebrovascular disease. Separate estimates of the effects of randomized treatment were determined using Cox regression models that were based on the unadjudicated events initially reported by the investigator and on the final events assigned by the EPAC. RESULTS-: There were 992 strokes initially reported by the investigators and 894 (90%) retained these diagnoses after adjudication by the EPAC. The hazard ratios (95% CIs) for the effect of randomized treatment on stroke were 0.74 (0.64 to 0.85) based on the investigator diagnoses and 0.72 (0.62 to 0.83) based on the EPAC diagnoses (P homogeneity=0.7). For each stroke subtype reported, the corresponding numbers of diagnoses (investigators/EPAC) were ischemic (593/565), hemorrhagic (124/111), and unknown (124/93) with no impact of the EPAC review on the estimates of treatment effects (all P homogeneity >0.3). There was likewise no detectable effect of reclassification of diagnoses for the effect estimates calculated for myocardial infarction or the main causes of death (all P homogeneity >0.5). CONCLUSION-: The EPAC process had no discernible impact on the trial conclusions. Very large trials powered to detect effects on stroke subtypes might obtain real scientific gain from an EPAC, but in the case of PROGRESS, the value of the EPAC was in the reassurance it provided.

本文言語英語
ページ(範囲)2111-2115
ページ数5
ジャーナルStroke
40
6
DOI
出版ステータス出版済み - 6 1 2009
外部発表はい

All Science Journal Classification (ASJC) codes

  • 臨床神経学
  • 循環器および心血管医学
  • 高度および特殊看護

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