Table 5. Comparison of stress levels between the 2 groups ($\overline{x}\pm s$).

Indicator	Group	T0	T1	T2	T3
GLU (mmol/L)	Observation group (n=58)	5.09±1.26	5.62±1.40	6.33±1.57	5.55±1.34
	Control group (n=57)	5.13±1.30	7.83±2.41	9.30±3.05	8.25±2.46
	t	0.168	6.026	6.582	7.326
	P	0.867	<0.001	<0.001	<0.001
E (pg/mL)	Observation group (n=58)	48.26±8.25	50.60±9.44	51.78±10.63	50.45±9.33
	Control group (n=57)	48.33±8.28	55.77±11.24	61.08±13.65	64.28±15.02
	t	0.045	2.646	4.080	5.942
	P	0.964	0.009	<0.001	<0.001
Cor (nmol/L)	Observation group (n=58)	181.26±20.52	185.36±22.37	191.17±24.03	184.23±21.56
	Control group (n=57)	182.04±23.60	195.12±25.33	208.74±26.80	205.32±25.11
	t	0.189	2.191	3.703	4.835
	P	0.850	0.031	<0.001	<0.001

P value, probability; t-test, Student’s t-test.