Skip to main content

Table 4 Correlations among scores from the EDSS and PDDS with demographic, ambulatory, functional and cognitive outcomes in 96 patients with multiple sclerosis

From: Validation of patient determined disease steps (PDDS) scale scores in persons with multiple sclerosis

Variable category Measure EDSS EDSS 95% CI PDDS PDDS 95% CI P-value
Clinical/Demographic Disease duration 0.199* (-0.002) - (0.384) 0.202* (0.002) - (0.387) .98
  Age 0.446** (0.270) - (0.593) 0.280** (0.084) - (0.455) .19
  Education -0.352** (-0.516) - (-0.163) -0.274** (-0.450) - (-0.078) .56
  Income -0.267** (-0.444) - (-0.070) -0.301** (-0.473) - (-0.107) .80
Ambulation 6 MW -0.805** (-0.866) - (-0.721) -0.704** (-0.793) - (-0.586) .11
  T25FW 0.727** (0.616) - (0.809) 0.627** (0.488) - (0.735) .20
  TUG 0.781** (0.688) - (0.849) 0.717** (0.603) - (0.802) .32
  Accelerometry -0.717** (-0.802) - (-0.603) -0.740** (-0.819) - (-0.633) .74
  MSWS-12 0.729** (0.619) - (0.811) 0.801** (0.715) - (0.863) .23
Function LL-FDI, BLEF -0.715** (-0.801) - (-0.601) -0.748** (-0.825)- (-0.644) .63
  LL-FDI, ALEF -0.727** (-0.809) - (-0.616) -0.739** (-0.818) - (-0.632) .86
  LL-FDI, UEF -0.392** (-0.549) - (-0.208) -0.445** (-0.593) -(-0.268) .66
Cognition SDMT -0.404** (-0.559) - (-0.221) -0.409** (-0.563) - (0.227) .97
  PASAT -0.261* (-0.439) - (-0.064) -0.244* (-0.424) - (-0.046) .90
  1. Note. EDSS = Expanded Disability Status Scale, PDDS = Patient Determined Disease Steps scale, P-value for the statistical significance of the difference between correlation coefficients, 6 MW – Six-minute walk, T25FW – Timed-25 Foot Walk, TUG – Timed Up and Go, MSWS-12 – Multiple Sclerosis Walking Scale, LL-FDI – Late-Life Function and Disability Instrument, BLEF – Basic Lower Extremity Function, ALEF – Advanced Lower Extremity Function, UEF – Upper Extremity Function, SDMT – Symbol Digit Modalities Test, and PASAT – Paced Auditory Serial Addition Test, * = p < .05, ** = p < .01.