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. 2012 Jun 6;12:73. doi: 10.1186/1472-6882-12-73

Figure 1.

Figure 1

The measurement model of KDS-Yin. “Thirsty at night” was identified to measure “Kidney-Essence deficiency” by the EFA was trimmed off by the SEM; whereas this symptom that added to measure “restlessness at night” was validated by the SEM. Of the KDSQ 24 items, 16 measure KDS-Yin, 9 are common items to KDS-Yin and KDS-Yang.