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Table 3 Internal Consistencies

From: Development and validation of a French patient-based health-related quality of life instrument in kidney transplant: the ReTransQoL

ReTransQOL

Dimensions

Mean ± SD

(Min – Max)

Cronbach's α

coefficient

(range if item was deleted)

IICa

(Min – Max)

IIC

% > 0.40

IDVb

IDV

% < 0.40

Physical Health

(PH)

58.5 ± 19.2

(13.9 – 95.3)

0.86

(0.84 – 0.86)

0.48 – 0.73

100%

0.07 – 0.50

92.5%

Mental Health

(MH)

69.3 ± 17.3

(4.9 – 100)

0.84

(0.80 – 0.85)

0.38 – 0.71

88.9%

0.04 – 0.48

83.3%

Medical Care

(MC)

64.4 ± 11.0

(37.3 – 84.8)

0.83

(0.79 – 0.83)

0.44–0.70

100%

0.01 – 0.44

97.7%

Fear of losing the graft (FG)

53.8 ± 20.9

(3.6 – 96.4)

0.79

(0.75 – 0.78)

0.64 – 0.78

100%

0.07 – 0.53

95.8%

Treatment (TR)

65.8 ± 15.5

(23.1 – 94.8)

0.70

(0.66 – 0.71)

0.37 – 0.66

77%

0.01 – 0.49

91.6%

  1. a ICC, Internal Item Consistency correlation coefficient: Range of correlations between items and their dimension
  2. b IDV, Item Discriminant Validity : Range of correlations between items and other dimension