Table 2.

Univariate association of heart rate measures with SBI and upper quartile of log-WMHV.

	SBI		Log-WMHV4
	Odds ratio (95% CI)	p value	Odds ratio (95% CI)	p value
Daytime heart rate	0.95 (0.76 to 1.19)	0.676	1.02 (0.85 to 1.21)	0.855
Nighttime heart rate	0.98 (0.76 to 1.26)	0.875	1.23 (1.01 to 1.49)	0.041
24-hour heart rate	0.94 (0.74 to 1.20)	0.619	1.09 (0.90 to 1.32)	0.377
Heart rate variability	0.89 (0.71 to 1.11)	0.289	0.96 (0.81 to 1.14)	0.620

Odds ratio for each increase of 10 beats/min and for increase of 0.04 heart rate variability.

CI = confidence interval, SBI = silent brain infarcts, and WMHV = white matter hyperintensity volume.