Bla ordlisten:

• uncertainty
  — A state characterized by inadequate evidence to justify being confident, e.g. about the effects of treatments; … (read more)
• under-reporting
  — Failure to publish research findings, often because of their nature, direction or lack of "statistical significance"; … (read more)
• undesirable effect
  — Difference in outcomes that does not favour a treatment in a treatment comparison; … (read more)
• unfairness (health inequity, inequity)
  — Avoidable inequalities in health between groups of people; … (read more)
• unit of analysis error
  — A type of error affecting the results of a study, usually a cluster-randomized trial, when the units used in the analysis of the results are different from the units of allocation to the treatment comparison groups; … (read more)
• utility value
  — In health economic evaluations, a measure of the strength of preference for a specific health outcome; … (read more)