Performance Scales(PS) uses a single question to assess each of eleven domains (mobility, hand function, vision, fatigue, cognition, bladder/bowel, sensory, spasticity, pain, depression and tremor/coordination). All of the subscales are scored ordinally as follows 0 (normal), 1 (minimal),2 (mild), 3 (moderate), 4 (severe), or 5 (total disability), except mobility which is scored from 0 to 6; total scores range from 0 to 41.
With validated DeltaQuest copyrighted translations available in 18 language versions in addition to the United States English version, the measure is amenable as a clinical research tool in many contexts and countries (www.deltaquest.org).
- Marrie RA, Goldman M. Validity of performance scales for disability assessment in multiple sclerosis. Mult Scler 2007;13:1176-82.