Test-retest Reliability

 

Multiple Sclerosis: (Rietberg, 2010; n= 43; ambulatory patients with MS (mean age 48.7 years; SD 7 years; 30 women; median Expanded Disability Status Scale score 3.5)

• Excellent test-retest reliability (ICC =0.85)

Interrater/Intrarater

  Reliability

Multiple Sclerosis: (Amtmann et al, 2012; n=1271 individuals with MS living in the community, 80% female, 36.2% reported being employed 20 or more hours a week; mean age 50.7, mean disease duration 13.2 years, MS severity as minimal (EDSS≤4.0) for 32.4% and intermediate (EDSS 4.5-6.5) for 47.9% and advanced (EDSS≥7.0) for 19.7%)

• Excellent reliability: Cronbach’s alpha = 0.94-0.96 for total MFIS

 

Internal Consistency

Multiple Sclerosis: (Kos et al, 2005)

• MFIS has been found to show change after intervention.

• After a 4‐week rehabilitation program, the MFIS did change, but the FSS did not.