“…Interrater comparison analysis is needed because interrater differences in scores can produce more than acceptable measurement errors (Edwards, Feightner, & Goldsmith, 1995). Most studies on interrater reliability in rehabilitation rely on professional therapists for data collection (Chen, 2007) or do not specify who read the gauges that the participants squeezed (Agnew & Maas, 1991;Shechtman, 2004;Sisto, 2007). Edwards et al (1995) determined that with careful attention to training and the use of standardized administration guidelines, research assistants with no previous background in health care can administer assessments with excellent reliability (intraclass correlation coefficient [ICC] = 0.97-1.00).…”