Metric | Definition | Notes |
---|---|---|
Smallest detectable difference (SDD) | The amount of difference in an outcome measure for which anything smaller cannot be reliably distinguished from random error in the measurement | Â |
Minimal detectable change (MDC) | ||
Minimal clinically important difference (MCID) | The smallest change or difference in an outcome measure between pre- and post-treatment perceived as beneficial (or detrimental) by the patient [7-9] | Can be used to measure improvement and worsening |
Minimal clinically important change (MCIC) | ||
Minimal clinically important improvement (MCII) | Only measures improvements | |
Clinically important difference (CID) | The difference in outcome measure that is considered clinically important/meaningful | Â |