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Table 2 Within-session comparisons and associations between trials

From: Test-retest reliability and sensitivity of the 20-meter walk test among patients with knee osteoarthritis

  1st Trial 2nd Trial Median difference   Spearman Average of 2 trials
  Median (25%, 75%) Median (25%, 75%) (sec) p value Correlation Median (25%, 75%)
  (sec) (sec)    (95% CI) (sec)
Day 1
 Session 1 16.72 (15.38, 19.28) 15.53 (14.60, 18.18) 0.78 < 0.01 0.94 (0.83, 0.98) 16.11 (14.99, 19.07)
 Session 2 15.28 (14.47, 18.12) 15.31 (14.32, 17.65) −0.15 0.63 0.90 (0.72, 0.97) 15.17 (14.85, 17.97)
Day 2
 Session 3 15.71 (14.80, 17.94) 15.35 (14.37, 18.37) 0.05 0.55 0.97 (0.91, 0.99) 15.53 (14.78, 18.16)
 Session 4 15.80 (14.41, 18.90) 15.44 (13.75, 19.66) 0.13 0.98 0.98 (0.94, 0.99) 15.62 (14.16, 19.44)
  1. Note. P values are based on Wilcoxon signed-rank tests. 95% CI = 95% confidence interval for Spearman Correlation Coefficient.