Table 3.

 Atrial fibrillation and stroke: incidence rate ratio (95% CI) associated with rheumatoid arthritis

Model	Atrial fibrillation	Stroke
Adjusted for sex, age, and calendar year	1.43 (1.33 to 1.53)	1.34 (1.24 to 1.44)
Adjusted for above and socioeconomic status	1.42 (1.33 to 1.53)	1.33 (1.23 to 1.43)
Adjusted for above and baseline cardiovascular drugs*	1.41 (1.31 to 1.51)	1.32 (1.22 to 1.42)
Adjusted for above and baseline comorbidity*	1.41 (1.31 to 1.51)	1.32 (1.22 to 1.42)

*As listed in table 1 (baseline characteristics).