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Table 4 Internal consistency of the Brazilian version of FIHOA

From: Translation, cultural adaptation and reproducibility of a Portuguese version of the Functional Index for Hand OsteoArthritis (FIHOA)

Item

Score

Scale mean if item is deleted

Scale variance if item is deleted

Ajusted total item correlation

Cronbach’s alpha if item is deleted

Item 1

0.53 ± 0.71

9.44

46.06

0.726

0.918

Item 2

0.97 ± 0.88

9.00

42.97

0.839

0.911

Item 3

0.97 ± 0.88

9.00

43.61

0.778

0.914

Item 4

1.06 ± 0.90

8.91

43.77

0.748

0.915

Item 5

1.09 ± 1.07

8.88

46.05

0.434

0.934

Item 6

0.63 ± 0.74

9.34

45.85

0.711

0.918

Item 7

0.97 ± 0.98

9.00

42.45

0.783

0.913

Item 8

0.75 ± 0.83

9.22

44.95

0.707

0.918

Item 9

1.56 ± 1.12

8.41

40.51

0.821

0.911

Item 10

1.44 ± 1.12

8.53

41.93

0.710

0.918

  1. Values are given as mean ± standard deviation