Table 2.

Number and risk of patients with an emergency department visit and hospitalization for atrial fibrillation, according to 12-month periods

	Number of patients	Risk, % (95% CI)	aOR (95% CI)*	p Value
Time interval and outcome	(n = 523)
13–24 months before bariatric surgery
ED visit or hospitalization†	83	15.9 (12.7–19.0)	reference	-
ED visit‡	29	5.5 (3.6–7.5)	reference	-
Hospitalization§	56	10.7 (8.0–13.4)	reference	-
1–12 months before bariatric surgery
ED visit or hospitalization†	103	19.7 (16.3–23.1)	1.29 (0.94–1.76)	0.11
ED visit‡	33	6.3 (4.2–8.4)	1.16 (0.68–1.97)	0.59
Hospitalization§	78	14.9 (11.9–18.0)	1.44 (1.01–2.07)	0.05
0–12 months after bariatric surgery
ED visit or hospitalization†	119	22.8 (19.1–26.4)	1.53 (1.13–2.07)	0.006
ED visit‡	41	7.8 (5.5–10.2)	1.48 (0.89–2.46)	0.13
Hospitalization§	90	17.2 (14.0–20.5)	1.70 (1.19–2.42)	0.003
13–24 months after bariatric surgery
ED visit or hospitalization†	111	21.2 (17.7–24.7)	1.41 (1.03–1.91)	0.03
ED visit‡	32	6.1 (4.1–8.2)	1.12 (0.66–1.91)	0.68
Hospitalization§	86	16.4 (13.3–19.6)	1.61 (1.13–2.30)	0.008

aOR = adjusted odds ratio; CI = confidence interval; ED = emergency department.

^*Adjusted odds ratios are for each 12-month period versus the reference period (i.e., 13–24 months before the index bariatric surgery), as calculated with conditional logistic regression.

^†Composite of at least 1 ED visit or hospitalization for AF.

^‡At least 1 ED visit for AF, not resulting in hospitalization.

^§At least 1 hospitalization for AF.