Characteristics of patients with RA and non-RA subjects
| Variable | RA (n=577) | Non-RA (n=540) |
|---|---|---|
| Age at RA incidence/index date (years), mean (±SD) | 56.8 (±15.0) | 56.4 (±14.6) |
| Female, n (%) | 397 (69) | 378 (70) |
| RF positive, n (%) | 380 (66) | – |
| Observation time (years) | ||
| Before incidence/index date, mean (median) | 4.8 (5) | 4.8 (5) |
| After incidence/index date, mean (median) | 4.2 (5) | 4.3 (5) |
| Lipid measurements | ||
| Total number | 3088 | 3048 |
| Number per subject before incidence/index date, mean (median) | 3.0 (2) | 3.2 (2) |
| Number per subject after incidence/index date, mean (median) | 3.1 (2) | 3.4 (3) |
RA, rheumatoid arthritis; RF, rheumatoid factor.