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Table 1 Internal consistency, Floor and ceiling effects, reliability and agreement for the TASD questionnaire (n = 46)

From: Translation and cross-cultural adaptation of “Trapeziometacarpal Arthrosis Symptoms and Disability—TASD” into Brazilian Portuguese

  Cronbach’s α Floor/ceiling (in %)a ICC – κ (IC95%)b (SEM in %)c
TASD 0.927 4.3%/0% 0.961 (0.954–0.967) 3.87
Symptoms 0.919 2.2%/0% 0.966 (0.957–0.972) 3.68
Ability to perform activities 0.847 6.5%/2.2% 0.955 (0.942–0.965) 5.49
  1. aPercentage of scores less than 5 or greater than 95
  2. bICC—Intraclass Correlation Coefficient
  3. cSEM—Standard Error of Measurement