Cumulative incidence and risk ratios (95% CI) for the components of DAS28 and HAQ
| No of VTE events (cumulative incidence, %) | Risk ratio* (95% CI) Unadjusted | Risk ratio (95% CI) Adjusted | |
| Swollen joint count | |||
| 0 | 811 (0.59) | 1 (ref) | 1 (ref) |
| 1–2 | 532 (0.72) | 1.24 (1.10 to 1.39) | 1.27 (1.13 to 1.43) |
| 3–28 | 817 (0.87) | 1.49 (1.33 to 1.67) | 1.55 (1.38 to 1.74) |
| Tender joint count | |||
| 0 | 772 (0.61) | 1 (ref) | 1 (ref) |
| 1–3 | 688 (0.74) | 1.22 (1.10 to 1.36) | 1.29 (1.16 to 1.44) |
| 4–28 | 699 (0.82) | 1.35 (1.19 to 1.52) | 1.52 (1.35 to 1.72) |
| ESR | |||
| 0–10 | 589 (0.55) | 1 (ref) | 1 (ref) |
| 11–21 | 595 (0.70) | 1.28 (1.12 to 1.45) | 1.11 (0.97 to 1.26) |
| 22–488 | 833 (0.88) | 1.61 (1.41 to 1.83) | 1.24 (1.09 to 1.43) |
| Patient global health | |||
| 0–20 | 564 (0.55) | 1 (ref) | 1 (ref) |
| 21–49 | 609 (0.65) | 1.17 (1.03 to 1.32) | 1.12 (0.99 to 1.27) |
| 50–100 | 896 (0.92) | 1.66 (1.47 to 1.89) | 1.65 (1.46 to 1.87) |
| HAQ | |||
| 0–0.38 | 519 (0.53) | 1 (ref) | 1 (ref) |
| 0.39–1.00 | 569 (0.63) | 1.17 (1.01 to 1.35) | 1.10 (0.95 to 1.27) |
| 1.01–3.00 | 879 (0.95) | 1.77 (1.55 to 2.04) | 1.48 (1.29 to 1.71) |
*Risk ratios estimated from separate unadjusted and adjusted (age, sex and calendar year of the visit year) log-binomial regression models where each of the separate exposures were categorised according to their tertiles.
DAS28, Disease Activity Score 28; HAQ, Health Assessment Questionnaire; VTE, venous thromboembolism.