Table 1

Characteristics of the systemic lupus erythematosus and general population groups at start of follow-up

General populationSystemic lupus
n16 7303390
Female, %85.085.1
Age at start of follow-up, mean (SD)48.9 (17.3)49.5 (17.6)
Person-years, mean (SD)5.1 (3.1)4.8 (3.1)
Country of birth, %
 Nordic89.485.0
 Non-Nordic Europe2.62.5
 Non-Europe7.912.5
Education level, %
 <9 years19.422.8
 10–12 years40.038.4
 >12 years29.727.0
 Missing10.911.9
Comorbidities, %
 Atrial fibrillation2.03.8
 Congestive heart disease1.24.0
 Hypertension6.415.7
 Diabetes2.94.4