Table 3

Surgery table

Total surgeries (n)10124572207411701328
 Total orthopaedic (n)59933491535859955
No. of patients having surgery (n)69928161184743889
 Orthopaedic (n)4242104908546650
Patients with more than one surgery (n)2271051486266299
 Orthopaedic (n)129726334178214
No. postoperative VTEs (n)318666
Postop VTE crude rates (95% CI)3.0 (0 to 6.3)4.0 (2.1 to 5.8)2.9 (0.6 to 5.2)5.1 (1.0 to 9.3)4.5 (0.9 to 8.2)
Unadjusted OR (95% CI)Referent1.3 (0.4 to 4.5)
Fully adjusted OR (95% CI)*Referent1.9 (0.5 to 7.4)
  • * Adjusted for age, gender, diabetes, baseline steroid exposure, smoking, hypertension, disease duration, disease severity, year of first anti-TNF drug and year of entry into study.

  • ADA, adalimumab; Anti-TNF, anti-tumour necrosis factor; ETN, etanercept; INF, infliximab; nbDMARD, non-biological disease-modifying antirheumatic drug; VTE, venous thrombotic event.