Table 5.

Generalized estimation equation for the PSQI.

			95% Wald Confidence Interval		Hypothesis Test
	B	Standard Error	Lower	Upper	Wald Chi Square	df	Sig.
Group
Control	0
Grounding	−1.407	0.7278	−2.834	0.019	3.738	1	0.053
Acupoint electrochemical signals
Kidney Meridians KI 1	0
Governing Vessel GV 16	−0.010	0.0346	−0.078	0.058	0.081	1	0.776
Time
Baseline	0
12 weeks	−0.0419	0.6444	−1.682	0.843	0.424	1	0.515