Table 2

Internal consistency
Cronbach’s Alpha
Baseline (Sample A)
KDS-Yin 0.81 (n = 235)
Kidney-Essence deficiency* 0.76 (n = 292)
Deficiency heat* 0.72 (n = 292)
Impaired Kidney orifices 0.61 (n = 235)
Restlessness at night 0.48 (n = 292)
KDS-Yang 0.81 (n = 235)
Kidney-Qi deficiency* 0.76 (n = 292)
Deficiency Cold* 0.70 (n = 292)
Impaired Kidney orifices 0.61 (n = 235)
Abnormal urine excretion 0.56 (n = 292)

The symptoms had good internal consistency in taping the concepts of KDS-Yin and KDS-Yang and their important domains * (>.70).

Chen et al.

Chen et al. BMC Complementary and Alternative Medicine 2012 12:73   doi:10.1186/1472-6882-12-73

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