Home > Publications . Search All . Browse All . Country . Browse PSC Pubs . PSC Report Series

PSC In The News

RSS Feed icon

Johnston says e-cigs may reverse two-decades of progress on smoking reduction

Mueller-Smith finds incarceration increases the likelihood of committing more, and more serious, crimes

Bloome says racial residential segregation is self-perpetuating

Highlights

Bob Willis awarded 2015 Jacob Mincer Award for Lifetime Contributions to the Field of Labor Economics

David Lam is new director of Institute for Social Research

Elizabeth Bruch wins Robert Merton Prize for paper in analytic sociology

Elizabeth Bruch wins ASA award for paper in mathematical sociology

Next Brown Bag

PSC Brown Bags will be back fall 2015


Medical Expulsive Therapy versus Early Endoscopic Stone Removal for Acute Renal Colic: An Instrumental Variable Analysis

Publication Abstract

Hollingsworth, John M., Edward Norton, Samuel R. Kaufman, R. Matthew Smith, J. Stuart Wolf, and Brent K. Hollenbeck. 2013. "Medical Expulsive Therapy versus Early Endoscopic Stone Removal for Acute Renal Colic: An Instrumental Variable Analysis." Journal of Urology, 190(3): 882-887.

Purpose: The use of medical expulsive therapy to hasten stone passage potentially decreases expenditures around episodes of renal colic. However, these efficiency gains may be mitigated if patients treated with medical expulsive therapy have frequent health care encounters due to pain while waiting for the stones to pass. Materials and Methods: Using claims data (2002 to 2006) we identified adult men with acute renal colic. We compared 6-week payments as well as frequency of hospitalization and emergency department revisits associated with an initial course of medical expulsive therapy with those for early endoscopic stone removal. To account for unmeasured confounding we performed an instrumental variable analysis, exploiting variation in recommended treatments based on the day of the week that a patient's first emergency department visit occurred. Results: Overall 1,835 and 4,397 men underwent medical expulsive therapy or early endoscopic stone removal, respectively. Although minimal differences existed between men with respect to the day of the week of emergency department presentation, weekend encounters were strongly associated with receiving medical expulsive therapy (p <0.001). Two-stage least squares regression revealed 6-week payments to be tenfold lower for men on medical expulsive therapy who were candidates for either treatment (p <0.001). While there was no difference in frequency of hospitalization, these men were more likely to have a repeat emergency department visit compared to those who underwent endoscopic stone removal (68.8% vs 39.6%, respectively, p = 0.025). Conclusions: Findings on medical expulsive therapy are mixed, with lower 6-week payments but more frequent repeat emergency department visits. These data inform patients who are candidates for medical expulsive therapy or endoscopic stone removal when making decisions about their care.

DOI:10.1016/j.juro.2013.03.040 (Full Text)

Browse | Search : All Pubs | Next