important
(clinically important, clinically significant)
— A judgement that a treatment effect is meaningful or important to the people affected; … (read more)
imprecision
— The extent of the likely effect of the play of chance on the results of a study, meta-analysis or measurement; … (read more)
incidence
(occurrence)
— The number of new occurrences of something in a population over a particular period of time; … (read more)
inconsistency
(heterogeneity, variability)
— In treatment comparisons, unexplained variation in effect estimates among similar studies; … (read more)
indeterminate diagnostic test result
(intermediate test result, valid inconclusive test result)
— A diagnostic test result where the result is known, but cannot be clearly categorised as either a positive or negative test result; … (read more)
index test
— A diagnostic test that is being evaluated against a reference standard test in a study of test accuracy; … (read more)
indicator
— A measure that reflects changes connected to a treatment that is used to assess performance; … (read more)
indirectness
— The extent to which studies do not directly compare the treatments of interest in populations of interest and measure outcomes of interest; … (read more)
inequity see unfairness
(health inequity, inequity)
— Avoidable inequalities in health between groups of people; … (read more)
informed consent
— A process through which potential participants in a study are made aware of its purpose and the implications for them, and are invited to agree to participate; … (read more)
see Intensity
— The degree of harm that results from an adverse outcome; the term "severity" is often used to describe the intensity of an event, but the idea of severity is better reserved as a descriptor of a degree of intensity (as in mild, moderate, and severe intensity).; … (read more)
intention-to-treat analysis
— Analyses based on the outcomes in all the study participants allocated to each of the treatment comparison groups.; … (read more)
interim analysis
— Analyses done to check that it is reasonable for an ongoing study to continue; … (read more)
interrupted time series study
(interrupted time series analysis, ITS study)
— A type of non-randomized study that measures an outcome at multiple time points before and after a treatment (the ”interruption”); … (read more)