[Retracted] Characteristics of the Dynamic Electrocardiogram in the Elderly with Nonvalvular Atrial Fibrillation Combined with Long R-R Intervals

Table 4

Clinical parameters of the long R-R interval group and nonlong R-R interval group.

Experimental parameters	Long R-R interval group (n = 399)	Nonlong R-R interval group (n = 133)	t
C-reactive protein (mg/L)	6.65 ± 1.27	9.38 ± 1.48	20.572	<0.001
Platelet count (10^9/L)	195.45 ± 58.87	199.56 ± 61.24	0.690	0.490
Mean hematocrit (Fl)	90.12 ± 8.47	88.98 ± 10.14	1.277	0.202
Brain natriuretic peptide (pg/ml)	788.89 ± 124.56	805.56 ± 128.84	1.325	0.186
PT (S)	11.89 ± 2.49	12.01 ± 2.51	0.480	0.631
Left ventricular internal diameter at end-systole (mm)	33.10 ± 5.48	32.92 ± 5.51	0.328	0.743
Left ventricular internal diameter at end-diastole (mm)	50.35 ± 5.48	49.85 ± 5.51	0.910	0.363
Pulmonary arterial pressure (mmHg)	31.56 ± 12.14	30.05 ± 11.98	1.246	0.213
Left ventricular ejection fraction (%)	60.89 ± 10.24	61.23 ± 11.51	0.321	0.748