Skip to main content

Table 2 Prevalence and incidence of atrial fibrillation by age group

From: The prevalence, incidence, management and risks of atrial fibrillation in an elderly Chinese population: a prospective study

Age group Prevalence (n = 3922) Incidence (n = 2017)
Number of participants Number of AF cases Rate (%) 95 % CI Number of person-years Number of AF cases Rate (per 1000 person-years) 95 % CI
Lower Upper Lower Upper
60–64 1550 12 0.8 0.4 1.4 2297 6 2.6 1.0 5.7
65–69 708 10 1.4 0.7 2.6 1429 3 2.1 0.4 6.1
70–74 767 13 1.7 0.9 2.9 1619 11 6.8 3.4 12.1
75–79 538 14 2.6 1.4 4.3 1116 11 9.9 4.9 17.6
≥80 359 21 5.9 3.7 8.8 464 3 6.5 1.3 18.8
Total 3922 70 1.8 1.4 2.3 6925 34 4.9 3.4 6.9
  1. AF indicates atrial fibrillation. 95 % confidence intervals (CI) were computed according to binominal distribution