Prophylactic anticoagulation to prevent venous thromboembolism in traumatic intracranial hemorrhage: a decision analysis

Table 2 Utilities used in the decision analysis

Utility	Baseline value	Published ranges	Threshold value within published range	Threshold value reached between 0 and 1
Baseline	0.96 [36]	0.95 to 1.0*	No	No
LMWH prophylaxis	0.99 [27]	0.9 to 1.0*	No	No
Living with DVT	0.95 [27]	0.92 to 1.0*	No	Yes (> 0.9⁺)
Living with PE	0.7 [35]	0.6 to 0.9 [32]	No	No
Living with massive systemic bleed	0.7 [27]	0.6 to 0.8*	No	No
Living with a non-disabling ICH	0.75 [33, 34]	0.6 to 0.8 [33, 34, 56, 57]	No	No
Living with a disabling ICH	0.39 [33, 34]	0.14 to 0.43 [33, 34, 57]	No	No

Table of utilities and plausible ranges used for the decision analysis. Ranges with an asterisk (*) were generated from a consensus of authors. The last two columns indicate variables for which a threshold value was identified in one-way sensitivity analysis. Values with a plus (+) indicate a threshold value above which withholding anticoagulant prophylaxis becomes the preferred strategy. DVT: deep vein thrombosis; ICH: intracranial hemorrhage; LMWH: low molecular weight heparin; PE: pulmonary embolism

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