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Table 3 Reliability properties of the international Hip Outcome Tool (12 items) - Greek version

From: International Hip Outcome Tool (12-items) as health-related quality-of-life measure in osteoarthritis: validation of Greek version

Internal consistency
(n = 124)
  Cronbach’s alpha  
Factor-1 0.892  
Factor-2 0.865  
iHOT12-Gr-totala 0.907  
Test-retest reliability
(n = 50)
  ICCb95%CIc p-value
Factor-1 0.976 (0.96–0.99) < 0.001
Factor-2 0.987 (0.98–0.99) < 0.001
iHOT12-Gr-totala 0.982 (0.97–0.99) < 0.001
  Paired samples t -test p-value
Initial assessment Re-assessment
Factor-1 42.51 ± 23.52d 43.40 ± 23.50d 0.232
Factor-2 33.50 ± 34.62d 33.63 ± 34.51d 0.865
iHOT12-Gr-totala 40.26 ± 23.94d 40.96 ± 24.12d 0.282
Interpretability/Repeatability
(n = 124)
  Standard error of measurement Minimal Detectable Change
Factor-1 3.72 10.3
Factor-2 3.64 10.1
iHOT12-Gr-totala 3.22 8.92
  1. ainternational Hip Outcome Tool (12 items) – Greek version Total
  2. bIntraclass correlation coefficient
  3. cConfidence interval
  4. dThe values are expressed as Mean ± Standard deviation (SD)