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. 2019 Feb;28(2):335-340.
doi: 10.1016/j.jse.2018.07.031. Epub 2018 Dec 11.

The procedure value index: a new method for quantifying value in shoulder arthroplasty

Derek D Berglund  1 , Tsun Yee Law  1 , Samuel Rosas  2 , Jennifer Kurowicki  3 , M Russell Giveans  1 , Dragomir Mijic  1 , Jonathan C Levy  4
Affiliations

The procedure value index: a new method for quantifying value in shoulder arthroplasty

Derek D Berglund et al. J Shoulder Elbow Surg. 2019 Feb.

Abstract

Background: The purpose of this study was to introduce the procedure value index (PVI) and apply this value instrument to shoulder arthroplasty. The PVI uses the value equation in units of minimal clinically important difference (MCID) to provide an objective system of quantifying value-driven care. Secondarily, we describe the PVI for both primary anatomic total shoulder arthroplasty (TSA) and reverse shoulder arthroplasty (RSA) to highlight value differences between these patient populations.

Methods: Patients undergoing primary shoulder arthroplasty with minimum 2-year follow-up were identified retrospectively. MCIDs were determined for the Simple Shoulder Test (SST) score, American Shoulder and Elbow Surgeons (ASES) score, visual analog scale (VAS) score for pain, and Single Assessment Numeric Evaluation (SANE) score. Cost data were reported as total hospitalization costs, total charges, and total reimbursements. The PVI was calculated as the ratio of outcome improvement in units of MCID over the cost of care. Mean PVIs for TSA and RSA were compared.

Results: Five hundred thirty-four patients met the inclusion criteria. MCIDs for the SST, ASES, VAS pain, and SANE scores were 3.61, 29.49, 3.28, and 37.05, respectively. With the exception of the ASES score, improvements in units of MCID were not different between TSA and RSA. However, total hospitalization costs and charges were significantly higher for RSA (P < .001). PVIs based on total hospitalization costs and total charges for the SST, ASES, and VAS pain scores were significantly greater for TSA (P < .05). No other PVI was significantly different.

Conclusions: The PVI was greater for TSA when total hospitalization costs and total charges were considered. The PVI helps highlight value differences in shoulder arthroplasty.

Keywords: Procedure value index (PVI); anatomic total shoulder arthroplasty (TSA); cost; minimal clinically important difference (MCID); reverse total shoulder arthroplasty (RSA); value.

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