Table 1. Characteristics of patients with AF and matched controls.

	Matched Control Group (N = 1,296)		AF Group (N = 1,296)		p-value
	Mean	SD	Mean	SD
Age	64.86	12.17	64.86	12.17	NS
	n	%	n	%
Gender
Male	843	65.05	843	65.05	NS
Female	453	34.95	453	34.95
Race/Ethnicity
White	1140	87.96	1202	92.75	<0.0001
Black	70	5.40	27	2.08	<0.0001
Hispanic	32	2.47	31	2.39	0.8985
Other Ethnicity	54	4.17	36	2.78	0.0535
Marital Status
Married	857	66.13	862	66.51	0.8354
Single	101	7.79	88	6.79	0.3261
Divorced/Separated/Widowed	338	26.08	346	26.70	0.7214
Education
< College Education	768	59.26	682	52.62	0.0007
≥ College Education	528	40.74	614	47.38
Currently Employed	435	33.56	335	25.85	<0.0001
Having Health Insurance	1185	91.44	1214	93.67	0.0300
Daily exercise	757	58.41	726	56.02	0.2184
Currently smoke	193	14.89	174	13.43	0.2844
Use Alcohol	747	57.64	775	59.80	0.2640
BMI
Underweight	17	1.31	13	1.00	0.4626
Normal	321	24.77	224	17.28	<0.0001
Overweight	507	39.12	470	36.27	0.1337
Obese	443	34.18	560	43.21	<0.0001
Decline to answer	8	0.62	29	2.24	0.0005
Income
Less than $25,000	220	16.98	221	17.05	0.9583
$25,000 to $49,999	424	32.72	418	32.25	0.8013
$50,000 to $74,999	268	20.68	270	20.83	0.9228
$75,000 and over	288	22.22	305	23.53	0.4267
Decline to answer	96	7.41	82	6.33	0.2769
CHADS2
0 (Low Risk)	505	38.97	265	20.45	<0.0001
1 (Moderate Risk)	474	36.57	459	35.42	0.5393
≥2 (High Risk)	317	24.46	572	44.14	<.0001
Comorbidities Count
0	938	72.38	698	53.86	<0.0001
1	239	18.44	362	27.93	<0.0001
2	73	5.63	132	10.19	<0.0001
≥3	46	3.55	104	8.02	<0.0001