Table 4.

Correlation analysis between the general situation and the effect indicators in the control group.

		Age	Education	Smoking history	Height	Weight	BMI
Venous pH	r	0.336	−0.030	0.091	−0.229	0,020	0.205
	p	0.034*	0.865	0.577	0.166	0.977	0.217
PvO2	r	0.214	0.065	0.007	−0.179	−0.024	0.105
	p	0.185	0.691	0.968	0.283	0.885	0.530
PvCO2	r	−0.420	0.096	−0.090	0.423	0.136	−0.144
	p	0.007**	0.557	0.579	0.008**	0.415	0.389
Lactic acid	r	0.083	−0.124	−0.214	−0.021	−0.015	0.030
	p	0.611	0.445	0.186	0.901	0.927	0.858
K+	r	−0.014	−0.338	0.125	−0.020	0.016	0.042
	p	0.933	0.032*	0.443	0.904	0.923	0.802
FBG	r	0.157	−0.206	0.074	−0.143	−0.026	0.066
	p	0.333	0.203	0.651	0.391	0.878	0.694
SOD	r	−0.314	0.256	0.054	−0.016	−0.112	−0.166
	p	0.049*	0.110	0.742	0.925	0.503	0.318

Pearson correlation.

^*p < 0.05,

^**p < 0.01.