Table 2. Return on Investment Model Input Parameters Outcomes


Initial SSI Incidence, % Annual SSI Reduction, %


Hospital costs Annual cost of NSQIP, $ Annual cost of CUSP, $


Share of CUSP costs for SSI prevention, % Cost per SSI case


Annual discount rate, % Monthly surgical bed capacity, no.


Costs used in Scenario Analyses 1) Replacement cost per patient, $


6.9 0.48


14,905.96 (US$19,740.21) 321,680 (US$426,006.11) 54.5


6,732.09 (US$8,915.42) 1.5


266 3,668.49 (US$4,858.24) 0.28


12,670.07 (US$16,779.18) 273,428 (US$362,105.20) 46.4


−285.87 (−US$378.58) 262 1,758.28 (US$2,328.52) 0.69


17,141.86 (US$22,701.25) 369,932 (US$489,907.03) 62.7


21,196.18 (US$28,070.45) 270 7,785.42 (US$10,310.36)


Derived from The Ottawa Hospital Data Warehouse


2) Hospital revenue per patient, $ 3) Home care cost per patient, $


1,600.00 (US$2,118.91) 3,782.50 (US$5,009.23)


400.00 (US$529.73) 0


2,000.00 (US$2,648.63) 5,492.33 (US$7,273.58)


Based on an expert estimate


Derived from Ontario Health administrative databases housed at the Institute of Clinical Evaluative Sciences


Note. CI, confidence interval.


Base


95% CI


Data Sources The Ottawa Hospital


128


Sasha van Katwyk et al


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