Blood glucose variability impacts heart rate dynamics in older type 2 diabetic and coronary heart disease patients

Table 1 Comparison of the general information between the two groups

	Normoglycemia group (n = 68)	Abnormal blood sugar fluctuation group (n = 75)	χ2/t	P value
Age (years)	64.91 ± 5.68	65.63 ± 5.72	0.754	0.452
Gender			0.116	0.733
Male	40	42
Female	28	33
Body mass index (kg/m2)	24.01 ± 1.39	23.55 ± 1.42	1.954	0.053
Course of diabetes mellitus (years)	5.27 ± 2.38	5.90 ± 2.29	1.610	0.110
Smoking history	25	27	0.009	0.924
Drinking history	10	11	0.007	0.995
Hypertension	37	40	0.017	0.897