Table 2.

Risk of Atrial Fibrillation in Patients With Cancer and the General Population

Groups	n	Events	Duration (Person-Years)	Time to Event (Years)∗	Incidence∗	Subdistribution HR (95% CI)
						Model 1	Model 2
Noncancer control subjects	1,633,663	31,801	8,795,076	3.2 (1.6–5.1)	3.62	Reference	Reference
Cancer patients	816,811	25,356	3,813,800	1.7 (0.9–3.2)	6.65	1.64 (1.61–1.66)	1.63 (1.61–1.66)

Values are median (interquartile range), unless otherwise indicated. Death was considered a competing risk in Fine and Gray’s competing risk regression models. Model 1: age- and sex-matched cohort; model 2: adjusted for age, sex, smoking, drinking, regular exercise, socioeconomic status, diabetes mellitus, hypertension, dyslipidemia, body mass index, and chronic kidney disease.

CI = confidence interval; HR = hazard ratio.

^∗Per 1,000 person-years.