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Table 2 Walking distance results

From: Unloading shoes for intermittent claudication: a randomised crossover trial

Outcome measure

Treatment sequence

Treatment period

Within-individual difference: Control minus unloading

1

2

6-min walk distance, metres

AB

   

Sample size

16

15

15

Mean (SD)

386 (92)

374 (93)

16 (45)

BA

   

Sample size

19

19

19

Mean (SD)

371 (97)

376 (107)

5 (45)

Treatment effecta

   

Sample size

34

Mean (95% CI)

11 (−5 to 26)

p-value

0.18

Pain-free walking distance during usual-pace walking, metres

AB

   

Sample size

16

15

15

Mean (SD)

161 (106)

217 (178)

−53 (81)

BA

   

Sample size

19

19

19

Mean (SD)

121 (55)

159 (72)

38 (60)

Treatment effecta

   

Sample size

34

Mean (95% CI)

−7 (−32 to 17)

p-value

0.55

  1. aEstimate of the difference between the control and the unloading shoes, accounting for a possible period effect
  2. AB, control then unloading; BA, unloading then control
  3. CI confidence interval, SD standard deviation