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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