HRR for risk of death among RA patients with ILD compared with matched RA cohort
| Time of follow-up | Matched RA comparisons, n deaths | Matched RA comparisons, n at risk | RA patients with ILD, n deaths | RA patients with ILD, n at risk | Crude HRR (95% CI) | Adjusted HRR (95% CI)* |
| 0 to 30 days | 41 | 11 722 | 26 | 679 | 10.0 (6.0 to 16.5) | 10.4 (5.9 to 18.2) |
| >30 days to 6 months | 162 | 11 577 | 40 | 646 | 4.1 (2.9 to 5.9) | 4.0 (2.8 to 5.8) |
| >6 months to 1 year | 214 | 10 831 | 24 | 572 | 2.1 (1.4 to 3.3) | 1.9 (1.2 to 3.0) |
| >1 year to 5 years | 1055 | 9707 | 107 | 500 | 2.3 (1.9 to 2.8) | 2.0 (1.7 to 2.5) |
| >5 to 10 years | 437 | 3944 | 38 | 170 | 2.9 (2.0 to 4.1) | 2.7 (1.9 to 3.9) |
*Adjustment made for seropositivity and Charlson Comorbidity Index.
HRR, hazard rate ratio; ILD, interstitial lung disease; RA, rheumatoid arthritis.