Supplementary table: Economic burden of complicated ureteral stent removal in patients with kidney stone disease in the USA

<p dir="ltr"><b>These are peer-reviewed supplementary materials for the article '</b><b>Economic burden of complicated ureteral </b><b>stent removal in patients with kidney stone </b><b>disease in the USA</b><b>' published in the</b><b> </b><b><i>Journal of Comparative Effectiveness Research</i></b><b>.</b></p><ul><li><b>Supplementary Table 1: </b>Patient Characteristics – Propensity-Score Matching</li></ul><p dir="ltr"><b>Aim: </b>To examine the medical costs of simple versus complicated ureteral stent removal. <b>Materials </b><b>& methods:</b> We included adults with kidney stones undergoing simple or complicated cystoscopy-based stent removal (CBSR) post ureteroscopy from the 2014 to 2018 Merative™ MarketScan Commercial Database. The medical costs of patients with complicated and simple CBSR were compared. <b>Results: </b>Among 16,682 patients, 2.8% had complicated CBSR. Medical costs for patients with complicated CBSR were higher than for simple CBSR ($2182 [USD] vs $1162; p < 0.0001). Increased stenting time, increased age, southern US geography and encrusted stent diagnoses were significantly associated with complicated CBSR. <b>Conclusion:</b> Complicated ureteral stent removal doubled the medical costs associated with CBSR. Ureteral stents with anti-encrustation qualities may reduce the need for complicated CBSR and associated costs.</p>