Table 4.

Familial risk of first time LAF hospitalization in individuals with parental or sibling history of AF

Relationship to proband	Number of pairs	Concordant pairs	OR (95% CI)*
Sibling	40,818	2,167 (5.3%)	3.23 (3.08-3.39)
Parent	34,657	4,906 (14.2%)	2.08 (2.02-2.15)

Results from conditional logistic regression analysis of individuals with LAF in the Swedish population (1987–2009).

*OR ratio was determined according to previous studies of familial risks [34,35].