Table 2.
Patient characteristics after matching
| RA-noILD (n=4293) | RA-ILD (n=4293) | |
| Age at RA diagnosis, mean (SD), years | 62.8 (13) | 62.7 (14) |
| Age at index date, *years | ||
| Mean (SD) | 68.3 (12) | 68.3 (12) |
| <65, n (%) | 1473 (34) | 1473 (34) |
| 65–74, n (%) | 1331 (31) | 1331 (31) |
| ≥75, n (%) | 1489 (35) | 1489 (35) |
| Male sex, n (%) | 1707 (40) | 1707 (40) |
| RA disease duration, mean (SD), years | 4.8 (5) | 4.8 (5) |
| Comorbidities, n (%)† | ||
| Cardiac disease | 3131 (73) | 3643 (85) |
| Arterial disease | 1116 (26) | 1630 (38) |
| Diabetes | 655 (15) | 914 (21) |
| Dyslipidaemia | 1761 (41) | 1912 (45) |
*For patients with RA-ILD, this is the date when both RA and ILD diagnoses were assigned; for the matched RA cohort, this is the matching date.
†There was a significantly higher proportion of patients with RA-ILD with cardiac disease, arterial disease, diabetes and dyslipidaemia compared with RA-noILD.
ILD, interstitial lung disease; NS, not significant; RA, rheumatoid arthritis; RA-ILD, RA with ILD; RA-noILD, RA without ILD.