Research Paper Volume 11, Issue 19 pp 8701—8709
Time-to-event analyses of lower-limb venous thromboembolism in aged patients undergoing lumbar spine surgery: a retrospective study of 1620 patients
Figure 2. Cox regression multivariable analysis. (A) Time-to-event analysis of postoperative VTE incidences; (B) Cumulative hazard model (P<0.001).