Journal of Health Economics · 2026 · Anja F. Gruber、Anders T. Van Sandt、Craig Wesley Carpenter、Scott Loveridge
中文摘要
执业护士(NP)劳动力在2010—2023年间迅速扩张,尤其是在农村县,如今患者从NP获得照护的可能性几乎与从医生获得照护一样高。与此同时,相对于城市地区,农村健康结果和医疗保健可及性继续恶化。关于NP如何与医生互动或替代医生的实证研究仍然有限。本文利用县级护理研究生项目的开设来检验其如何影响当地NP和初级保健医生的供给。使用Integrated Postsecondary Education Data System和Area Health Resource Files的数据,我们估计交错双重差分框架。我们表明,新设研究生项目导致当地NP供给大幅增加,并发现对附近农村县以及提供者与人口比率较低的县存在正向溢出效应。我们发现,在项目首批学生毕业后的十年间,多达30%的学生在同一县成为持照NP;对于农村项目,大多数毕业生增加了区域NP供给。我们发现当地NP增加对初级保健医生数量没有不利影响,这表明更广泛的NP教育机会总体上促进了当地提供者的供给。本文说明了农村医学教育在增加当地初级保健提供者可及性以及解决现有照护可及性不平等方面的重要性。
Abstract
The Nurse Practitioner (NP) workforce expanded rapidly from 2010-2023, especially in rural counties, where patients today are nearly as likely to receive care from an NP as from a physician. At the same time, rural health outcomes and access to health care continue to worsen relative to urban areas. Empirical research on how NPs interact with or substitute for physicians remains limited. This paper exploits county-level openings of graduate nursing programs to test how they impact the local supply of NPs and primary care physicians. Using data from the Integrated Postsecondary Education Data System and Area Health Resource Files, we estimate staggered difference-in-differences frameworks. We show that new graduate programs lead to large increases in the local NP supply and find positive spillover effects for nearby rural counties and counties with low provider to population ratios. We find that over the decade after a program first graduates students, up to 30% of students become licensed NPs in the same county, and for rural programs, the majority of graduates add to the regional supply of NPs. We find no adverse impact of local NP increases on the number of primary care physicians, suggesting that broader access to NP education boosts the local supply of providers overall. This paper illustrates the importance of rural medical education in increasing local access to primary care providers and in addressing existing inequities in access to care.