Table 5

Modified IMPROVE VTE risk score

VTE risk factorVTE risk score
Previous VTE3
Known thrombophilia2
Current lower limb paralysis or paresis2
History of cancer2
ICU/CCU stay1
Complete immobilisation ≥1 day1
Age ≥60 years1
  • CCU, critical care units; ICU, intensive care unit; IMPROVE, International Medical Prevention Registry on Venous Thromboembolism; VTE, venous thromboembolism.