The OROS Project


What is the OROS Project?

OROS stands for Outcome Reporting in Obstetric Studies. We are a consortium of healthcare professionals, researchers, trainees, students, current and former patients, and members of the general public working to standardize the reporting and measurement of outcomes in obstetric studies. Some of our current projects include:

  1. Developing core outcome sets for high-risk pregnancy conditions
  2. Standardizing composite adverse obstetric outcomes
  3. Deriving and validating a tool to assess the comprehensiveness of outcome reporting in obstetric trials

What is a core outcome set (COS)?

No two studies define outcomes in the same way. This creates challenges when reviewing and comparing study results. A “Core Outcome Set” is a standardized and validated minimum set of outcomes that should be measured in research studies. It determines what should be measured and how it should be measured. COS developed by the OROS project consists of five steps

  1. Systematic review
  2. Interviews and Focus Groups
  3. Electronic Delphi Survey
  4. Consensus Meeting
  5. Processes for Measuring Outcomes


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