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Comparative Study
. 2011 May;4(3):306-12.
doi: 10.1161/CIRCOUTCOMES.110.958959. Epub 2011 Apr 19.

Center variation in hospital costs for patients undergoing congenital heart surgery

Sara K Pasquali  1 , Jie-Lena Sun, Phil d'Almada, Robert D B Jaquiss, Andrew J Lodge, Neal Miller, Alex R Kemper, Carole M Lannon, Jennifer S Li
Affiliations
Comparative Study

Center variation in hospital costs for patients undergoing congenital heart surgery

Sara K Pasquali et al. Circ Cardiovasc Qual Outcomes. 2011 May.

Abstract

Background: Congenital heart disease consumes significant health care resources; however, there are limited data regarding factors affecting resource utilization. The purpose of this study was to evaluate variation between centers in total hospital costs for 4 congenital heart operations of varying complexity and associated factors.

Methods and results: The Premier Database was used to evaluate total cost in children undergoing isolated atrial septal defect (ASD) repair, ventricular septal defect (VSD) repair, tetralogy of Fallot (TOF) repair, or arterial switch operation (ASO) from 2001 to 2007. Mixed models were used to evaluate the impact of center on total hospital costs adjusting for patient and center characteristics and length of stay. A total of 2124 patients were included: 719 ASD (19 centers), 792 VSD (20 centers), 420 TOF (17 centers), and 193 ASO (13 centers). Total cost increased with complexity of operation from median $12 761 (ASD repair) to $55 430 (ASO). In multivariable analysis, models that accounted for center effects versus those that did not performed significantly better for all 4 surgeries (all P≤0.01). The proportion of total cost variation explained by center was 19% (ASD repair), 11% (VSD repair), 6% (TOF repair), and 3% (ASO). Higher-volume centers had significantly lower hospital costs for ASD and VSD repair but not for TOF repair and ASO.

Conclusions: Total hospital costs varied significantly by center for all congenital heart surgeries evaluated, even after adjustment for patient and center characteristics and length of stay. Differences among centers were most prominent for lower complexity procedures.

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Figures

Figure 1
Figure 1
Box plots displaying center variation in unadjusted total hospital costs A. ASD repair, B. VSD repair, C. TOF repair, D. ASO Each box represents one center, middle bar represents the median, and ends of box the interquartile range. ASD=atrial septal defect, VSD=ventricular septal defect, TOF=tetralogy of Fallot, ASO=arterial switch operation
Figure 1
Figure 1
Box plots displaying center variation in unadjusted total hospital costs A. ASD repair, B. VSD repair, C. TOF repair, D. ASO Each box represents one center, middle bar represents the median, and ends of box the interquartile range. ASD=atrial septal defect, VSD=ventricular septal defect, TOF=tetralogy of Fallot, ASO=arterial switch operation
Figure 1
Figure 1
Box plots displaying center variation in unadjusted total hospital costs A. ASD repair, B. VSD repair, C. TOF repair, D. ASO Each box represents one center, middle bar represents the median, and ends of box the interquartile range. ASD=atrial septal defect, VSD=ventricular septal defect, TOF=tetralogy of Fallot, ASO=arterial switch operation
Figure 1
Figure 1
Box plots displaying center variation in unadjusted total hospital costs A. ASD repair, B. VSD repair, C. TOF repair, D. ASO Each box represents one center, middle bar represents the median, and ends of box the interquartile range. ASD=atrial septal defect, VSD=ventricular septal defect, TOF=tetralogy of Fallot, ASO=arterial switch operation
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