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Table 5 Distribution values for ETAM scores and the items used on the final version

From: Validation of the Erlangen Test of Activities of Daily Living in Persons with Mild Dementia or Mild Cognitive Impairment (ETAM)

ICF domain and Items
  Communication Mobility Self-care Domestic life Major life areas -economic life  
  Phone call Traffic situations Pill organiser Making tea Alarm clock Finances ETAM total score
Mean (Min; Max) 2.0 (0; 6) 3.0 (0; 6) 2.9 (0; 6) 1.9 (0; 3) 1.7 (0; 3) 4.0 (0; 6) 15.4 (1; 30)
Standard deviation 1.5 1.6 2.5 0.8 1.0 1.6 6.2
Skewness 1.05 −.18 .04 −.40 .11 −.68 −.08
Kurtosis .56 −.58 −1.75 −.29 −1.16 −.14 −1.12
Discriminatory power of item .42 .40 .64 .43 .43 .47  
Cronbach’s alpha if item deleted .68 .68 .61 .69 .68 .65