Table 4:

Analysis of costs for primary repair hospitalization versus summed costs for staged repair hospitalizations

A. OBSERVED
	Primary Repair (n=131)	Staged Repair (n=193)	p
Total cost	$147,427 (107,458 249,752)	$191,110 (145,251–273,467)	<0.001
Department level costs
Clinical	$13,699 (7,259–30,218)	$17,523 (11,162–30,890)	0.01
Imaging	$5,963 (4,055–9,602)	$11,128 (6,989–18,025)	<0.001
Laboratory	$14,978 (9,025–20,423)	$19,015 (14,188–30,364)	<0.001
Pharmacy	$6,169 (3,052–12,353)	$11,253 (6,848–21,138)	<0.001
Supply	$10,793 (5,049–21,282)	$14,718 (9,314–25,173)	0.002
Other	$61,075 (39,719–100,563)	$98,442 (66,733–151,501)	<0.001
B. PROPENSITY SCORE ADJUSTED
	Cost ratio	95% CI	p
Total cost	0.65	0.55–0.78	<0.001
Department level costs
Clinical	0.53	0.37–0.77	<0.001
Imaging	0.55	0.47–0.65	<0.001
Laboratory	0.62	0.49–0.79	<0.001
Pharmacy	0.52	0.39–0.68	<0.001
Supply	0.38	0.24–0.60	<0.001
Other	0.55	0.44–0.70	<0.001

All costs expressed in 2017 United States Dollars ($) and measured over first 18 months.

Values are presented as median (interquartile range).

Cost ratios are the adjusted difference in costs between primary repair and staged repair strategies. Cost ratios <1 reflect cost savings favoring primary repair.