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Table 2 Internal consistency reliability (Cronbach's α) of each dimension for different samples

From: Quality of life of Chinese urban community residents: a psychometric study of the mainland Chinese version of the WHOQOL-BREF

Sample Physical Psychological Social relationship Environmental
Guangzhou (N = 1052) 0.67(0.71)a 0.77 0.72(0.45)a 0.78
Without chronic illness (N = 823) 0.66(0.70)a 0.77 0.75(0.47)a 0.79
With chronic illness (N = 229) 0.61(0.65)a 0.72 0.53(0.34)a 0.75
Taiwan Chinese (N = 1017) 0.76 0.70 0.68(0.72)b 0.75(0.77)b
Hong Kong Chinese (N = 848)c 0.76 0.80 0.67 0.78
Normative Sample (23 countries) (N = 11830)d 0.82 0.81 0.68 0.80
  1. aIn brackets: including two additional items for the mainland Chinese version
  2. bIn brackets: including additional items for the Taiwanese version: "Do you feel respected by others?" (social domain) and "Are you usually able to get the things you like to eat?" (environmental domain [25])
  3. cHong Kong data [24]
  4. dNormative Sample (23 countries) data [9]