Understanding the optimal use of various therapies in life-long complex chronic diseases is vital to the present health care mission of maximizing health and minimizing costs. This K08 award proposal outlines a training and research plan to facilitate my development into an independent health services researcher focusing on the pharmaco-economics of complex chronic diseases. My main career goal is to apply health economics and decision science to inform health policy on the optimal use of various pharmaco-therapies. In the next five years, I will focus on the pharmaco-economics of biologic therapies in inflammatory bowel disease (IBD) (Crohn's disease [CD] and ulcerative colitis [UC]). Biologics are currently the most effective and most expensive therapeutic options in IBD. My project seeks to answer how biologic therapies have impacted the health and economics of IBD, and how biologics can be used more cost-effectively. This K08 award will help me accomplish the following training and career goals: (1) to acquire necessary skills in health economics and decision science to evaluate the pharmaco-economics of complex chronic diseases, (2) to become an independent health services researcher investigating the comparative cost-effectiveness of clinical strategies. To achieve these goals, I have assembled a mentoring team comprised of primary mentor, Dr. Jay Bhattacharya;co-mentor, Dr. Paul Wise;two advisors, Dr. Margaret Brandeau and Dr. Jeremy Goldhaber-Fiebert. Training will include formal courses and individual mentoring. The research goals in this proposal are motivated by the following question: Given the variety of therapeutic options and differences in IBD patient profiles, what is the best way to use biologics to sustain health and decrease costs? The project has three specific aims:
Aim 1 : To characterize the pharmaco-economics of biologics in CD and UC by determining the utilization trends and treatment effects on patient outcomes.
Aim 2 : To determine the cost-effectiveness of biologic therapies for biologic-naive CD and UC patients.
Aim 3 : To determine the health policy implications if optimal cost-effective treatment strategies were adopted in the use of biologics in CD and UC patients. I will address these aims through a large database analysis using econometric methods, two comparative cost- effectiveness analyses that compare biologics in head-to-head simulations, and two competing risk-analyses that elaborate health policy implications if cost-effective use of biologics were to become standard clinical practice.

Public Health Relevance

My K08 research plan during the award term works toward developing an expertise in critically evaluating how expensive medical therapies can be used to maximize health and minimize costs for patients living with complex chronic diseases. I will use inflammatory bowel disease (IBD) as a model for complex chronic disease affecting children and adults by imposing lifelong disability and tremendous health care expenditures. The first phase of my study uses econometric techniques to analyze a large national patient database to determine health and economic impact of using biologic agents, the newest and most expensive medical therapy for the treatment of IBD. The second phase of my study builds decision analytic models to determine the cost-effectiveness of competing biologic agents. The final phase of my study uses decision science to compare health policies and benefits to society if biologic agents were used optimally. These three projects will represent pioneering efforts to advance pediatric and adult comparative cost-effectiveness research in gastroenterology and pave a path for similar investigations in other complex chronic diseases.

National Institute of Health (NIH)
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Clinical Investigator Award (CIA) (K08)
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Study Section
Diabetes, Endocrinology and Metabolic Diseases B Subcommittee (DDK)
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Podskalny, Judith M,
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Stanford University
Schools of Medicine
United States
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Park, Kt; Harris, Merissa; Khavari, Nasim et al. (2014) Rationale for Using Social Media to Collect Patient-Reported Outcomes in Patients with Celiac Disease. J Gastrointest Dig Syst 4:
Yang, Zhuo; Clark, Nick; Park, K T (2014) Effectiveness and cost-effectiveness of measuring fecal calprotectin in diagnosis of inflammatory bowel disease in adults and children. Clin Gastroenterol Hepatol 12:253-62.e2
Park, K T; Sin, Aaron; Wu, May et al. (2014) Utilization trends of anti-TNF agents and health outcomes in adults and children with inflammatory bowel diseases: a single-center experience. Inflamm Bowel Dis 20:1242-9
Hoffenberg, Edward J; Park, K T; Dykes, Dana M et al. (2014) Appropriateness of emergency department use in pediatric inflammatory bowel disease: a quality improvement opportunity. J Pediatr Gastroenterol Nutr 59:324-6
Park, K T; Crandall, Wallace V; Fridge, Jacqueline et al. (2014) Implementable strategies and exploratory considerations to reduce costs associated with anti-TNF therapy in inflammatory bowel disease. Inflamm Bowel Dis 20:946-51
Park, K T; Tsai, Raymond; Wang, Louise et al. (2013) Cost-effectiveness of universal serologic screening to prevent nontraumatic hip and vertebral fractures in patients with celiac disease. Clin Gastroenterol Hepatol 11:645-53