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Table 1 Agreement statistics

From: Agreement, reliability and validity in 3 shoulder questionnaires in patients with rotator cuff disease

  Test (SD) Retest (SD) Mean difference (95% CI)* p-value Sw Repeatability coefficient
WORC 44.4 (15.1) 45.0 (16.1) -0.6 (-3.0 to 1.7) 0.59 6.2 17.2
OSS 43.1 (15.4) 41.3 (12.9) 1.8 (-0.4 to 4.0) 0.11 5.8 16.1
SPADI 51.4 (17.8) 52.6 (18.5) -1.2 (-3.9 to 1.5) 0.38 7.1 19.7
  1. Agreement estimated by the difference between test and retest, the within-standard deviation (Sw), and the repeatability coefficient.
  2. * 95% CI For paired t-test under null hypothesis = no difference between test and retest score. 95% CI = 95% confidence interval. SD = standard deviation