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. Author manuscript; available in PMC: 2023 May 25.
Published in final edited form as: Ann Surg. 2017 Jul;266(1):195–200. doi: 10.1097/SLA.0000000000001946

Table 3.

Resource Utilization and Hospital-Derived Financial Data by Treatment Group

Usual Practice Mean, [Median, (IQR)] (n =191) CPG-Directed Practice Mean, [Median, (IQR)] (n=122) Adjusted Absolute Differencea [95% CI] p-valuea
Hospital days per patient 6.5 [5.7 (4.0–7.8)] 5.5 [4.9 (3.2–6.3) −0.87 [(−1.64) – (−0.08)] 0.03
Estimated cost per hospital dayb $2,557 [$2,226 ($2,492 – $2,840)] $1,958 [$1,902 ($1,732–$ 2,195) −$572 [(−$748) – (−$397)] <0.01
Estimated total costs per patientb $16,466 [$13,553 ($9,983 – $18,235)] $10,528 [$9,642 ($8,073–$11,615)] −$5,451 [(−$7,755) – (−$3,147)] <0.01
Total revenue per patientb $17,495 [$14,173 ($9,545 – $23,193)] $ 15,495 [$11,994 ($8,775–$20,113)] −$2,554 [(−$4,261) – (−$848)] <0.01
Total net profit per patientb $1,028 [$(645), ($5,999 – $7,849)] $ 4,966 [$2,491, ($2,157 – $11,490)] $3,118 [$1,131 – $5,106] <0.01

IQR = Interquartile Range

a

Absolute difference of CPG-based practice vs. usual practice adjusted for age, gender, race, insurance status, identification of intra-abdominal abscess on pre-operative CT/US, and within-surgeon correlation.

b

Inflated to 2016 US Dollars.