Table 2 Comparison between the periods before and after clinical guidelines (GL) implementation: expected values (costs and event-free patients) of venous thromboembolism (VTE) prophylaxis
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
Low25.180.9738.810.97+13.630.0018.340.97−6.840.00
Moderate127.200.84122.140.86−5.06+0.02113.230.88−13.97+0.04
High200.550.76195.380.77−5.17+0.01188.660.78−11.89+0.02
Very high511.490.38381.200.56−130.29+0.18385.370.56−126.12+0.18
All210.120.74181.300.79−28.82+0.05174.590.80−35.53+0.06