1. Noun
A number showing how large an observed effect is.
A quantitative measure of the magnitude of a difference, relationship or intervention effect.
“The effect size was small but precisely estimated.”
2. Phrase
A number showing how large a difference or relationship is.
A quantitative measure of the magnitude of a difference, association or intervention effect. Report the measure used and interpret its practical meaning.
“The effect size was modest despite the statistically significant result.”
Report the measure used and interpret its practical meaning
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