Alternative spelling: standardized meanSyn.: arithmetic mean A measure of central tendency calculat... difference (SMD) The difference between two means, divided by an estimate of the within-group standard deviation. Note: When a continuous variable(Related concepts: utility and preference.) A cardinal measu... (such as pain) is measured in a variety of ways across studies (using different scales), it may prove impossible to compare or combine the study results in a meta-analysis(Related concept: PubMed) An electronic database of medical .... If the effects are expressed as a standardised value(Related concepts: utility and preference.) A cardinal measu..., the results can be combined, since they are no longer expressed as units of measurement. Standardised meanSyn.: arithmetic mean A measure of central tendency calculat... differences are sometimes referred to as a “d index.”* *Concept introduced by J. Cohen (1988).
scoping reviewAnt.: prospective study. A study in which the investigators ... rapid reviewAlternate spelling: randomised controlled trial A study comp...