Clinimetrics: Single Assessment Numeric Evaluation

Description: The Single Assessment Numeric Evaluation (SANE) is a single-item, global, patient-reported outcome measure. Patients provide awhole number response to the question ‘On a scale from 0 to 100, howwould you rate your (eg, injured limb) today, with 100 being normal?’. It is typically used as a global rating of function, although this is not specifically stated in the question, and the definition of normality is determined by the individual patient. As the question is rated at baseline and follow-up, it can be used as a measure that captures the change in function (ie, recovery) over this period. Patients tend to define their recovery based on their basic function, pain, performance, and expectations for ‘normal’ function. The construct of the SANE is similar to the Patient-Specific Functional Scale, which also reports patients’ functional change on an 11-point scale for a variety of musculoskeletal disorders. (However, the Patient-Specific Functional Scale is often administered only at follow-up, yielding a retrospective score of the change/recovery over the period from baseline to followup). Overall, the shortness of the SANE reduces the burden of gathering outcome data and is simpler for clinical practice use. Validity, responsiveness and reliability: The SANE is expressed on a scale of 0 to 100 and has been compared with other 100-point scales such as the Lysholmor Rowe. Regarding validity, the SANE is reported to have a correlation of 0.83 at 3 and 6 months postoperatively when comparedwith the International KneeDocumentation Committee. The International Knee Documentation Committee is an 18-question evaluation that focuses on symptoms, activities of daily living and sports