Welcome to the ARIA 2021 Annual Meeting Agenda App. You are seeing this in simple view. Click on any session to see Presenters, Discussants and a Session Description. Click on Presenters to find a single presenter and their sessions. If you find an error, please email gphillips@aria.org. Registrants have been added and will continue to be updated until 7/29/21 when registration closes. Zoom links will be shared directly with all participants two days prior to the conference. Please make notifications@sched.com a "safe sender" in your email system. We will be sending messages throughout the conference through this medium. 
Back To Schedule
Tuesday, August 3 • 9:00am - 10:30am
3E3 Scope Economies in Commercial Health Insurance

Sign up or log in to save this to your schedule, view media, leave feedback and see who's attending!

Feedback form is now closed.
Tice Sirmans, Illinois State University; Patty Born, Florida State University

In markets where companies can offer multiple products or services, the cost of production may decline as the variety of products or services increases. We test whether these economies of scope exist among U.S. health insurers, who can offer a variety of health insurance products across different lines of business. Using a sample of insurers writing commercial health insurance business over the period 2010-2018, we provide evidence that insurers providing coverage in only one health insurance line of business have significantly higher underwriting profitability. However, these monoline insurers have significantly higher expense ratios. Among the majority of insurers that provide coverage in more than one line of business, we find variations in both underwriting performance and expense ratios across insurers that participate in multiple medical services lines (e.g., providing both individual and group plans) and those whose portfolios include other health lines which are not major medical expense lines (e.g., dental, vision). Our findings have important implications for understanding how changes to health insurer product portfolios may achieve the objectives of reducing insurer expenses and lowering consumers’ cost of coverage.


Yugang Ding

School of Economics Peking University


Tice Sirmans

Illinois State University
avatar for Patty Born

Patty Born

Florida State University
Dr. Patricia Born is the Midyette Eminent Scholar in Risk Management and Insurance in the Department of Risk Management/Insurance, Real Estate and Legal Studies at Florida State University’s College of Business. She also serves as advisor of the Risk Management and Insurance doctoral... Read More →

Tuesday August 3, 2021 9:00am - 10:30am EDT