Table 4 Comparison between the periods before and after clinical guidelines (GL) implementation: expected values (costs and event-free patients) of venous thromboembolism (VTE) prophylaxis–sensitivity analysis–lower limits of the ranges for VTE rate
Patient riskBefore GLReal implementationOptimal implementation
After GLVariationAfter GLVariation
After GL versus before GLAfter GL versus before GL
(1) Costs (€)(2) Proportion of event-free patients(3) Costs (€)(4) Proportion of event-free patients(5) Costs (€)(6) Proportion of event-free patients(7) Costs (€)(8) Proportion of event-free patients(9) Costs (€)(10) Proportion of event-free patients
Low20.960.9835.560.98+14.600.0013.590.98−7.370.00
Moderate90.130.8989.900.90−0.23+0.0187.840.91−2.29+0.02
High144.190.84142.070.85−2.12+0.01137.890.85−6.30+0.01
Very high294.270.60230.350.71−63.92+0.11234.520.71−59.75+0.11
All135.850.83123.580.86−12.27+0.03120.990.87−14.86+0.04