Table 4.
PHIS-Derived Cost Data by Treatment Group
| Costsa, Mean, [Median, (IQR)] | Usual Practice (n=122) | CPG-Directed Practice (n =191) | Adjusted Absolute Differenceb [95% CI] | p-valueb |
|---|---|---|---|---|
| Total | $21,179 [$17,294 ($12,557–$27,031)] | $14,183 [$12,746 ($9,757–$15,402] | (−$6,669) [(−$8,949) – (−$4,389)] | <0.01 |
| Total Adjusted | $22,335 [$18,250 ($13,241–$28,806)] | $15,147 [$13,585 ($10,409–$16,423)] | (−$6,835) [(−$9,272) – (−$4,399)] | <0.01 |
| Clinical | $735 [$198 ($70–$ 739)] | $125 [$65 ($0–$186)] | (−$564) [(−$785) – (−$344)] | <0.01 |
| Imaging | $764 [$214 ($0–$1,177)] | $507 [$142 ($69–$923)] | (−$221) [(−$451) – $9)] | 0.06 |
| Lab | $271 [$153 ($78–$303)] | $134 [$112 ($54–$188)] | (−$106) [(−$134) – (−−$79)] | <0.01 |
| Pharmacy | $2,087 [$1,569 ($965–$2,570)] | $1,383 [$1,140 ($833–$1,656)] | (−$649) [(−$1,055) – (−$243)] | <0.01 |
| Supply | $2,013 [$2,033 ($1,193–$2,816)] | $31 [$0.001 ($0–$0.01) | (−$1,993) [(−$2,241) – (−$1,746)] | <0.01 |
| Other | $12,232 [$10,075 ($7,814–$14,652)] | $10,981 [($9,809 ($8248–$11,801)] | (−$1,063) [(−$2,476) – $350] | 0.09 |
IQR = Interquartile Range
a
Inflated to 2016 US Dollars.
b
Absolute difference of CPG-based practice relative to usual practice adjusted for age, gender, race, insurance status, identification of intra-abdominal abscess on pre-operative CT/US, and within-surgeon correlation.