Table 1. Baseline characteristics of the study subjects.

	Insomnia		Non-insomnia		p-value
	n = 64421	%	n = 128842	%
Gender					1.00
Female	38860	60.3	77719	60.3
Male	25561	39.7	51123	39.7
Age at baseline, y					1.00
18-40	14402	22.4	28804	22.4
41-65	32621	50.6	65242	50.6
≥ 65	17398	27	34796	27
Co-morbidity
DM	14041	21.8	26113	20.3	< 0.001
Hypertension	29390	45.6	49272	38.2	< 0.001
Dyslipidemia	20546	31.9	34812	27	< 0.001
COPD	4679	7.3	6848	5.3	< 0.001
Congestive heart failure	5287	8.2	8675	6.7	< 0.001
Coronary artery disease	14954	23.2	22396	17.4	< 0.001
Chronic kidney disease	2856	4.4	5106	4	< 0.001
Stroke	4073	6.3	6984	5.4	< 0.001
Peripheral artery disease	640	1	100	0.1	< 0.001
Sleep apnea	216	0.3	282	0.2	< 0.001
Valvular heart diseases	819	1.3	1160	0.9	< 0.001
Depression	6291	9.8	3459	2.7	< 0.001
Bipolar disorder	8274	12.8	4972	3.9	< 0.001
Afib	Median follow-up years = 5.91 (3.30-8.40)				< 0.001
No	62747	97.4	125917	97.7
Yes	1674	2.6	2925	2.3

Afib, atrial fibrillation; COPD, chronic obstructive pulmonary disease; DM, diabetes mellitus.