Demographic and laboratory characteristics of GRACE cohorts
| Cohort characteristics | Manchester | Birmingham | Umeå | Copenhagen | Paris | Crete | Hannover |
|---|---|---|---|---|---|---|---|
| N | 1087 | 112 | 567 | 296 | 727 | 300 | 222 |
| AAO (years±SD) | 54.5±15.0 | 57.0±14.9 | 55.9±14.4 | 48.1±15.4 | – | 55.4±4.3 | 45.3±11.9 |
| Female (%) | 68 | 58 | 67 | 75 | – | 74 | 77 |
| Anti-CCP+ (%) | 37 | 60 | 68 | 61 | – | 71 | |
| RF+ (%) | 38 | 69 | 72 | 66 | – | 43 | 78 |
AAO, mean age at onset of symptom with SD; anti-CCP+, percentage of patients with a positive anti-cyclic citrullinated peptide titre; GRACE, Genetic Repository for AutoCure; N, number of observations; RF+, number of patients with a positive rheumatoid factor titre.