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. 2013 Dec 21;11:212. doi: 10.1186/1477-7525-11-212

Table 7.

Test-retest reliability results in the validation phase (N = 30)

 
Kolmogorov-smirnov
Shapiro-wilk
Pearson’s correlation coefficient
  Statistic df P Statistic df P   P
First measurement
0.14
30
0.18
0.96
30
0.37
0.98 <0.001
Repeat measurement 0.13 30 0.20 0.97 30 0.50