The effectiveness of substitution of hospital ward care from medical doctors to physician assistants: a study protocol

Abstract

BackgroundBecause of an expected shrinking supply of medical doctors for hospitalist posts, an increased emphasis on efficiency and continuity of care, and the standardization of many medical procedures, the role of hospitalist is increasingly allocated to physician assistants (PAs). PAs are nonphysician clinicians with medical tasks. This study aims to evaluate the effects of substitution of hospital ward care to PAs.Methods/DesignIn a multicenter matched controlled study, the traditional model in which the role of hospitalist is taken solely by medical doctors (MD model) is compared with a mixed model in which a PA functions as a hospitalist, contingent with MDs (PA/MD model). Twenty intervention and twenty control wards are included across The Netherlands, from a range of medical specialisms. Primary outcome measure is patients’ length of hospital stay. Secondary outcomes include indicators for quality of hospital ward care, patients experiences with medical ward care, patients health-related quality of life, and healthcare providers’ experiences. An economic evaluation is conducted to assess the cost implications and potential efficiency of the PA/MD model. For most measures, data is collected from medical records or questionnaires in samples of 115 patients per hospital ward. Semi-structured interviews with healthcare professionals are conducted to identify determinants of efficiency, quality and continuity of care and barriers and facilitators for the implementation of PAs in the role of hospitalist.DiscussionFindings from this study will help to further define the role of nonphysician clinicians and provides possible key components for the implementation of PAs in hospital ward care. Like in many studies of organizational change, random allocation to study arms is not feasible, which implies an increased risk for confounding. A major challenge is to deal with the heterogeneity of patients and hospital departments.Trial registrationClinicalTrials.gov ID NCT01835444

Physician assistants in the Netherlands

“…PA students must have a healthcare-related bachelor's degree and at least 2 years of clinical work experience in the healthcare domain. 2 The programs incorporate a dual work-education model, which means that students are employed within a particular medical specialty 2 days per week, under the supervision of a mentor physician, while enrolled in the master's PA program. 2 The students undertake didactic and clinical education within this medical specialty from the beginning until the end of the curriculum.…”

“…2 The programs incorporate a dual work-education model, which means that students are employed within a particular medical specialty 2 days per week, under the supervision of a mentor physician, while enrolled in the master's PA program. 2 The students undertake didactic and clinical education within this medical specialty from the beginning until the end of the curriculum. This model is very successful because in addition to teaching students it assures them of a job after graduation.…”

“…2 Since January 2012, PAs are authorized to indicate and perform predefi ned medical procedures and prescribe medications without supervision. 2 The scope of practice will be reevaluated in 2017.…”

“…2 Since January 2012, PAs are authorized to indicate and perform predefi ned medical procedures and prescribe medications without supervision. 2 The scope of practice will be reevaluated in 2017. 2 "Physician assistant" is a protected title by law, under the Dutch Individual Health Care Professions Act, meaning that all registered Dutch PAs are licensed to practice.…”

“…2 The scope of practice will be reevaluated in 2017. 2 "Physician assistant" is a protected title by law, under the Dutch Individual Health Care Professions Act, meaning that all registered Dutch PAs are licensed to practice. 2…”