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Table 5 Test-retest comparisons.

From: Development of a patient reported outcome scale for fatigue in multiple sclerosis: The Neurological Fatigue Index (NFI-MS)

Scale

Spearman rho*

Median Scores

T1, T2 **

Summary

0.864

21, 20

Physical

0.852

17, 16

Cognitive

0.826

7, 6

Nocturnal sleep

0.837

8, 8

Diurnal sleep

0.796

11, 10

  1. Spearman correlation coefficients and median scores for subscales and Summary scores over 2—4 week period.
  2. * all p < 0.001
  3. T1 = initial completion, T2 = retest at 2—4 weeks
  4. ** all differences, by Wilcoxon Signed Rank, non-significant (p > 0.05)
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