Research Article
Increased Incidence of Atrial Fibrillation in Patients with Rheumatoid Arthritis
Table 1
Characteristics of 813 patients with rheumatoid arthritis (RA) and 813 subjects without RA.
| | Characteristic | RA ( = 813) | Non-RA ( = 813) | value |
| | Age at incidence/index, years, mean ± SD | 55.9 ± 15.7 | 55.9 ± 15.7 | 0.9 | | Sex, female, (%) | 556 (68%) | 556 (68%) | 0.9 | | Race, white, (%) | 761 (94%) | 771 (96%) | 0.1 | | Body mass index at incidence/index, kg/m2, mean ± SD | 27.8 ± 6.0 | 27.7 ± 6.0 | 0.8 | | Smoking status at incidence/index, (%) | | | 0.002 | | Never | 364 (45%) | 435 (54%) | | | Current | 178 (22%) | 144 (18%) | | | Former | 271 (33%) | 234 (29%) | | | Diabetes mellitus at incidence/index, (%) | 79 (10%) | 67 (8%) | 0.3 | | Hypertension at incidence/index, (%) | 307 (38%) | 275 (34%) | 0.1 | | Coronary heart disease at incidence/index, (%) | 87 (11%) | 89 (11%) | 0.9 | | Heart failure at incidence/index, (%) | 23 (3%) | 23 (3%) | 0.9 | | Length of follow-up, years, mean ± SD | 9.6 ± 6.9 | 10.9 ± 7.2 | — |
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