Table 3

Health care cost savings with ERAS (2015 Canadian dollars)

OutcomeTotal change, dUnit costBase-case analysisScenario analysis
Base caseLowHigh
Primary LOS, d*−1990$1566$3 116 340$2 017 008$4 217 238$3 116 340
Number of ED visits−57$904000$51 528
Number of specialist visits137$352000−$48 224
Number of GP visits−109$196000$21 364
Prevented readmissions−18$2696000$48 528
Readmission LOS, d−419$1566000$656 154
Total cost$3 116 340$2 017 008$4 217 238$3 845 690
Cost of ERAS$826 210$826 210$826 210$826 210
Total net cost savings$2 290 130$1 190 798$3 391 028$3 019 480
Net cost savings per patient$1,768$920$2,619$2332
Return on investment ratio3.82.45.14.7
  • ED = emergency department; ERAS = Enhanced Recovery After Surgery; GP = general practitioner; LOS = length of stay in hospital.

  • * p < 0.000.

  • $638 per patient × 1295 patients.