Table 1

Characteristics of patients receiving etanercept and/or adalimumab

Prescribed Drug Register cohortARTIS cohort*
N65105673
Etanercept46173867
Adalimumab25962059
Women, N (%)5026 (77%)4382 (77%)
Age (years), mean (95% CI)55.5 (55.1 to 55.8)55.4 (55.1 to 55.8)
Education level
 ≤9 years26%26%
 10–12 years45%45%
 >12 years29%29%
  • * Patients registered in the Swedish Biologics Register ARTIS with treatment with a biological agent between 2006 and 2008 and also present in the Prescribed Drug Register.