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Table 6 Internal consistency and test-retest reliability of ChQOL

From: Development and validation of the Chinese Quality of Life Instrument

ChQOL facets Cronbach's alpha N = 273 ICC N = 56
   Ch1.1 Complexion 0.8601 0.75
   Ch1.2 Sleep 0.7425 0.68
   Ch1.3 Stamina 0.8484 0.82
   Ch1.4 Appetite & digestion 0.8183 0.74
   Ch1.5 Adaptation to climate 0.7403 0.84
   Ch2.1 Consciousness 0.7949 0.67
   Ch2.2 Thinking 0.9022 0.78
   Ch2.3 Spirit of the eyes 0.7534 0.70
   Ch2.4 Verbal expression 0.7083 0.81
   Ch3.1 Joy 0.8707 0.71
   Ch3.2 Anger 0.8012 0.80
   Ch3.3 Depressed mood 0.8409 0.76
   Ch3.4 Fear & Anxiety 0.7280 0.80
ChQOL domains   
   Physical form --- 0.83
   Spirit --- 0.87
   Emotion --- 0.87
Overall ChQOL --- 0.90