Table 2:

Summary of Costs for the Index Hospitalization

Cost Metric	Group	Unadjusted Cost, Mean (95% CI)	Cost Ratio (95% CI)	p value	Propensity Score Adjusted Cost, Mean (95% CI)	Cost Ratio (95% CI)	p value
Total Cost	PDA Stent N=104	$106,152 ($89,576 – $125,796)	0.82 (0.67 – 1.01)	0.06	$106,976 ($90,126 – $126,975)	0.82 (0.67 – 1.01)	0.06
	BT Shunt (ref) N=251	$128,822 ($115,485 – $143,700)			$129,898 ($116,339 – $145,036)
Clinical	PDA Stent N=104	$13,721 ($10,792 – $17,444)	0.99 (0.74 – 1.31)	0.93	$12,829 ($10,063 – $16,356)	0.91 (0.68 – 1.21)	0.51
	BT Shunt (ref) N=251	$13,893 ($11,904 – $16,215)			$14,142 ($12,097 – $16,533)
Imaging	PDA Stent N=104	$13,855 ($12,105 – $15,858)	1.56 (1.33 – 1.83)	<0.001	$13,648 ($11,861 – $15,705)	1.47 (1.25 – 1.74)	<0.001
	BT Shunt (ref) N=251	$8,887 ($8,147 – $9,694)			$9,259 ($8,460 – $10,133)
Lab	PDA Stent N=104	$13,867 ($11,493 – $16,732)	0.68 (0.54 – 0.85)	<0.001	$13,777 ($11,366 – $16,699)	0.66 (0.53 – 0.83)	<0.001
	BT Shunt (ref) N=251	$20,488 ($18,155 – $23,120)			$20,841 ($18,415 – $23,586)
Pharmacy	PDA Stent N=104	$8,727 ($6,876 – $11,077)	0.88 (0.66 – 1.17)	0.38	$8,296 ($6,501 – $10,587)	0.81 (0.61 – 1.09)	0.16
	BT Shunt (ref) N=251	$9,911 ($8,501 – $11,555)			$10,205 ($8,724 – $11,938)
Supply	PDA Stent N=104	$6,942 ($4,791 – $10,058)	1.25 (0.81 – 1.94)	0.32	$6,885 ($4,748 – $9,984)	1.37 (0.88 – 2.14)	0.16
	BT Shunt (ref) N=251	$5,548 ($4,370 – $7,044)			$5,015 ($3,949 – $6,369)
Room	PDA Stent N=104	$38,207 ($32,064 – $45,527)	0.66 (0.54 – 0.82)	<0.001	$40,068 ($33,569 – $47,825)	0.69 (0.56 – 0.85)	<0.001
	BT Shunt (ref) N=251	$57,614 ($51,467 – $64,496)			$57,974 ($51,737 – $64,963)

Cost is reported in 2016 US $. BT = Blalock-Taussig. PDA = patent ductus arteriosus. BT Shunt was the reference group for Cost Ratio.