N | Respiratory morbidity | Respiratory mortality | |
---|---|---|---|
HR [95% CI] | HR [95% CI] | ||
Age | 942 | 1.03 [1.01–1.04] | 1.10 [1.06–1.14] |
Female | 942 | 0.69 [0.52–0.92] | 0.28 [0.14–0.56] |
Ex–smoker | 856 | 2.06 [1.36–3.11] | 4.14 [1.42–12.02] |
Current smoker | 856 | 2.68 [1.73–4.13] | 3.34 [1.05–10.64] |
BMI | 921 | 0.98 [0.95–1.01] | 0.91 [0.84–0.98] |
DAS 28 score | 778 | 1.33 [1.18–1.50] | 1.01 [0.76–1.34] |
HAQ score | 927 | 1.68 [1.40–2.01] | 1.54 [1.01–2.34] |
RF +ve | 855 | 1.55 [1.14–2.11] | 1.89 [0.93–3.86] |
ACPA +ve | 791 | 1.24 [1.03–1.49] | 1.39 [1.00–1.94] |
Nodules | 941 | 1.32 [0.75–2.31] | 2.14 [0.76–6.06] |
Shared epitope | 538 | 1.31 [0.88–1.96] | 0.66 [0.26–1.66] |
N, number of patients with available data; RF, rheumatoid factor; ACPA, anti-citrullinated protein antibody; CRP, C-reactive protein; HAQ, health assessment questionnaire; HR, hazard ratio.