Table 3.

Medical services utilization in the 12-month period among patients with atrial fibrillation vs those without atrial fibrillation

	AF N = 79,621	No AF N = 79,621	P value	Absolute risk difference (95% CI)	Relative risk (95% CI)
All-cause healthcare use
Inpatient visits	42,475 (53.3)	19,644 (24.7)	<.001	29% (28%–29%)	1.77 (1.76–1.78)
Outpatient visits	78,809 (99.0)	77,801 (97.7)	<.001	1% (1%–1%)	1.01 (1.01–1.01)
ER visits	31,417 (39.5)	25,236 (31.7)	<.001	8% (7%–8%)	1.23 (1.21–1.24)
Other medical visits†	55,307 (69.5)	48,203 (60.5)	<.001	9% (8%–9%)	1.13 (1.12–1.35)
CV-related healthcare use
Inpatient visits	36,658 (46.0)	9,278 (11.7)	<.001	34% (34%–35%)	2.51 (2.49–2.53)
Outpatient visits	76,575 (96.2)	46,962 (59.0)	<.001	37% (37%–38%)	1.27 (1.27–1.27)
ER visits	12,612 (15.8)	4822 (6.1)	<.001	10% (9%–10%)	2.41 (2.35–2.47)
Other medical visits†	32,359 (40.6)	17,615 (22.1)	<.001	19% (18%–19%)	1.67 (1.65–1.69)

Data are n (%).

AF = atrial fibrillation; CI = confidence interval; CV = cardiovascular; ER = emergency room.

^†Other medical visits included any medical visits that were not captured with the inpatient, outpatient, or ER visit categories (eg, pharmacy, ambulance, mobile unit, nursing facility, skilled nursing facility, or residential substance abuse treatment facility).