MCID
Pronunciation: em-see-eye-dee
Also written as: MCID — Minimal Clinically Important Difference
Acronym for Minimal Clinically Important Difference; the smallest outcome measure score change considered meaningfully beneficial in a rehabilitation context.
Full Definition
MCID is the standard abbreviation for Minimal Clinically Important Difference, widely used in aural rehabilitation research papers, systematic reviews, and clinical guidelines to denote the threshold of change that separates clinically meaningful improvement from measurement error or trivial variation. Authors and editors must ensure MCID is expanded on first use in a document. The value is specific to each outcome instrument and patient population; therefore an MCID derived for one tool (e.g., APHAB) cannot be applied to another (e.g., IOI-HA). Failure to cite the instrument alongside the MCID figure is a common editorial error in this field.
Usage
Usage note: Expand on first use. Always pair with the specific outcome instrument to which it applies.
In Context
- "A change score below the MCID for the GHABP was interpreted as evidence of insufficient rehabilitation benefit." — Clinical guideline document
- "The authors failed to specify the MCID threshold, leaving readers unable to determine whether the reported gains were clinically significant." — Peer-review editorial comment