Table 3.

Demographic Differences in Relative Hazards of AF with HRV Decrease

	HR*	95% CI		p for interaction
Male	1.14	1.05	1.23	0.75
Female	1.14	1.05	1.24
White	1.15	1.08	1.22	0.87
Black	1.09	0.97	1.24
Age <54 yrs	1.02	0.91	1.15	0.05
Age ≥54 yrs	1.22	1.14	1.30
No diabetes	1.09	1.03	1.16	<0.01
Diabetes	1.33	1.16	1.52

^*Per SD lower log (SDNN) after adjusting for variables as in Model 3 (in Table 2). No difference in relationship was seen by prevalent CHD, heart failure, or use of beta-blockers (results not shown).

Abbreviations as in Tables 1 and 2.