Show simple item record

Outcomes of primary care delivery by nurse practitioners: Utilization, cost, and quality of care

dc.contributor.authorLiu, Chuan‐fen
dc.contributor.authorHebert, Paul L.
dc.contributor.authorDouglas, Jamie H.
dc.contributor.authorNeely, Emily L.
dc.contributor.authorSulc, Christine A.
dc.contributor.authorReddy, Ashok
dc.contributor.authorSales, Anne E.
dc.contributor.authorWong, Edwin S.
dc.date.accessioned2020-04-02T18:38:42Z
dc.date.availableWITHHELD_13_MONTHS
dc.date.available2020-04-02T18:38:42Z
dc.date.issued2020-04
dc.identifier.citationLiu, Chuan‐fen ; Hebert, Paul L.; Douglas, Jamie H.; Neely, Emily L.; Sulc, Christine A.; Reddy, Ashok; Sales, Anne E.; Wong, Edwin S. (2020). "Outcomes of primary care delivery by nurse practitioners: Utilization, cost, and quality of care." Health Services Research 55(2): 178-189.
dc.identifier.issn0017-9124
dc.identifier.issn1475-6773
dc.identifier.urihttps://hdl.handle.net/2027.42/154625
dc.description.abstractObjectiveTo examine whether nurse practitioner (NP)- assigned patients exhibited differences in utilization, costs, and clinical outcomes compared to medical doctor (MD)- assigned patients.Data SourcesVeterans Affairs (VA) administrative data capturing characteristics, outcomes, and provider assignments of 806 434 VA patients assigned to an MD primary care provider (PCP) who left VA practice between 2010 and 2012.Study DesignWe applied a difference- in- difference approach comparing outcomes between patients reassigned to MD and NP PCPs, respectively. We examined measures of outpatient (primary care, specialty care, and mental health) and inpatient (total and ambulatory care sensitive hospitalizations) utilization, costs (outpatient, inpatient and total), and clinical outcomes (control of hemoglobin A1c, LDL, and blood pressure) in the year following reassignment.Principal FindingsCompared to MD- assigned patients, NP- assigned patients were less likely to use primary care and specialty care services and incurred fewer total and ambulatory care sensitive hospitalizations. Differences in costs, clinical outcomes, and receipt of diagnostic tests between groups were not statistically significant.ConclusionsPatients reassigned to NPs experienced similar outcomes and incurred less utilization at comparable cost relative to MD patients. NPs may offer a cost- effective approach to addressing anticipated shortages of primary care physicians.
dc.publisherRAND Corporation
dc.publisherWiley Periodicals, Inc.
dc.subject.otherutilization
dc.subject.othernurse practitioner
dc.subject.otherprimary care
dc.subject.otherhealth workforce
dc.subject.othercost
dc.subject.otherquality of care
dc.titleOutcomes of primary care delivery by nurse practitioners: Utilization, cost, and quality of care
dc.typeArticle
dc.rights.robotsIndexNoFollow
dc.subject.hlbsecondlevelPublic Health
dc.subject.hlbtoplevelHealth Sciences
dc.description.peerreviewedPeer Reviewed
dc.description.bitstreamurlhttps://deepblue.lib.umich.edu/bitstream/2027.42/154625/1/hesr13246_am.pdf
dc.description.bitstreamurlhttps://deepblue.lib.umich.edu/bitstream/2027.42/154625/2/hesr13246-sup-0001-Authormatrix.pdf
dc.description.bitstreamurlhttps://deepblue.lib.umich.edu/bitstream/2027.42/154625/3/hesr13246.pdf
dc.identifier.doi10.1111/1475-6773.13246
dc.identifier.sourceHealth Services Research
dc.identifier.citedreferenceMorgan PA, Smith VA, Berkowitz TSZ, et al. Impact of physicians, nurse practitioners, and physician assistants on utilization and costs for complex patients. Health Aff. 2019; 38 ( 6 ): 1028 - 1036.
dc.identifier.citedreferencePregibon D. Goodness of link tests for generalized linear models. Appl Stat. 1980; 29 ( 1 ): 15 - 23.
dc.identifier.citedreferenceManning WG, Mullahy J. Estimating log models: to transform or not to transform? J Health Econ. 2001; 20 ( 4 ): 461 - 494.
dc.identifier.citedreferencePizer S. Falsification testing of instrumental variables methods for comparative effectiveness research. Health Serv Res. 2016; 51 ( 2 ): 790 - 811.
dc.identifier.citedreferenceStaiger D, Stock J. Instrumental variables regression with weak instruments. Econometrica. 1997; 65 ( 3 ): 557 - 586.
dc.identifier.citedreferenceBasu A, Coe N, Chapman CG. 2SLS versus 2SRI: appropriate methods for rare outcomes and/or rare exposures. Health Econ. 2018; 27: 937 - 955.
dc.identifier.citedreferenceTerza J, Basu A, Rathouz PJ. Two- stage residual inclusion estimation: addressing endogeneity in health econometric modeling. J Health Econ. 2008; 27 ( 3 ): 531 - 543.
dc.identifier.citedreferenceAustin PC. Using the standardized difference to compare the prevalence of a binary variable between two groups in observational research. Comm Stat Simul Comput. 2009; 38 ( 6 ): 1228 - 1234.
dc.identifier.citedreferenceAustin PC. Propensity- score matching in the cardiovascular surgery literature from 2004 to 2006: a systematic review and suggestions for improvement. J Thorac Cardiovasc Surg. 2007; 134 ( 5 ): 1128 - 1135.
dc.identifier.citedreferenceLovink MH, Persoon A, Koopmans RT, Van Vught AJ, Schoonhoven L, Laurant MG. Effects of substituting nurse practitioners, physician assistants or nurses for physicians concerning healthcare for the aging population: a systematic literature review. J Adv Nurs. 2017; 73 ( 9 ): 2084 - 2102.
dc.identifier.citedreferenceLaurant M, Harmsen M, Wollersheim H, Grol R, Faber M, Sibbald B. The impact of nonphysician clinicians: do they improve the quality and cost- effectiveness of health care services? Med Care. 2009; 66 ( 6 ): 36S - 89S.
dc.identifier.citedreferenceJacobson PD, Parker LE, Coulter ID. Nurse practitioners and physician assistants as primary care providers in institutional settings. Inquiry. 1998; 35 ( 4 ): 432 - 446.
dc.identifier.citedreferenceU.S. Department of Veterans Affairs. Patient Centered Management Module (PCMM) for Primary Care Directive 1406. Washington, DC: U.S. Department of Veterans Affairs; 2017.
dc.identifier.citedreferenceHorrocks S, Anderson E, Salisbury C. Systematic review of whether nurse practitioners working in primary care can provide equivalent care to doctors. BMJ. 2002; 324 ( 7341 ): 819 - 823.
dc.identifier.citedreferenceBrown SA, Grimes DE. A meta- analysis of nurse practitioners and nurse midwives in primary care. Nurs Res. 1995; 44 ( 6 ): 332 - 339.
dc.identifier.citedreferenceChapman J, Zechel A, Carter Y, Abbott S. Systematic review of recent innovations in service provision to improve access to primary care. Br J Gen Pract. 2004; 54 ( 502 ): 374 - 381.
dc.identifier.citedreferenceRich E. Advanced practice clinicians and physicians in primary care: still more questions than answers. Ann Intern Med. 2016; 165 ( 4 ): 290.
dc.identifier.citedreferenceLaurant M, Reeves D, Hermens R, Braspenning J, Grol R, Sibbald B. Substitution of doctors by nurses in primary care. Cochrane Database Syst Rev. 2005; 2: CD001271.
dc.identifier.citedreferenceHollinghurst S, Horrocks S, Anderson E, Salisbury C. Comparing the cost of nurse practitioners and GPs in primary care: modelling economic data from randomised trials. Br J Gen Pract. 2006; 56 ( 528 ): 530 - 535.
dc.identifier.citedreferenceMartínez- González N, Djalali S, Tandjung R, et al. Substitution of physicians by nurses in primary care: a systematic review and meta- analysis. BMC Health Serv Res. 2014; 14: 214.
dc.identifier.citedreferenceMartínez- González N, Tandjung R, Djalali S, Huber- Geismann F, Markun S, Rosemann T. Effects of physician- nurse substitution on clinical parameters: a systematic review and meta- analysis. PLoS ONE. 2014; 9 ( 2 ): e89181.
dc.identifier.citedreferencePerloff J, Clarke S, DesRoches CM, O- Reilly- Jacob M, Buerhaus P. Association of state- level restrictions in nurse practitioner scope of practice with the quality of primary care provided to medicare beneficiaries. Med Care Res Rev. 2017; 76 ( 5 ): 597 - 626.
dc.identifier.citedreferenceLitaker D, Mion L, Planavsky L, et al. Physician- nurse practitioner teams in chronic disease management: the impact on costs, clinical effectiveness, and patients- perception of care. J Interprof Care. 2003; 17 ( 3 ): 223 - 227.
dc.identifier.citedreferenceKaton W, Von Korff M, Lin E, Simon G. Rethinking practitioner roles in chronic illness: the specialist, primary care physician, and the practice nurse. Gen Hosp Psychiatry. 2001; 23 ( 3 ): 138 - 144.
dc.identifier.citedreferenceCharlton I, Charlton G, Broomfield J, Mullee MA. Audit of the effect of a nurse run asthma clinic on workload and patient morbidity in general practice. Br J Gen Pract. 1991; 41 ( 347 ): 227.
dc.identifier.citedreferenceVeterans Health Administration. Patient Aligned Care Team (PACT) Handbook. 2017. https://www.va.gov/vhapublications/ViewPublication.asp?pub_ID=2977. Accessed June 1, 2019.
dc.identifier.citedreferenceBuerhaus PI, DesRoches CM, Dittus R, Donelan K. Practice characteristics of primary care nurse practitioners and physicians. Nurs Outlook. 2015; 63 ( 2 ): 144 - 153.
dc.identifier.citedreferenceU.S. Department of Veterans Affairs. Department of Veterans Affairs FY2018- 2024 Strategic Plan. Washington, DC: U.S. Department of Veterans Affairs; 2018.
dc.identifier.citedreferenceWong ES, Wang V, Liu CF, Hebert PL, Maciejewski ML. Do veterans health administration enrollees generalize to other populations? Med Care Res Rev. 2016; 73 ( 4 ): 493 - 507.
dc.identifier.citedreferenceAgency for Healthcare Research and Quality. The number of nurse practitioners and physician assistants practicing primary care in The United States. 2011. http://www.ahrq.gov/research/findings/factsheets/primary/pcwork2/index.html. Accessed June 1, 2019.
dc.identifier.citedreferenceFletcher CE, Copeland LA, Lowery JC, Reeves PJ. Nurse practitioners as primary care providers within the VA. Mil Med. 2011; 176 ( 7 ): 791 - 797.
dc.identifier.citedreferenceU.S. Department of Veterans Affairs. VA Benefits & Health Care Utilization. 2018. https://www.va.gov/vetdata/docs/pocketcards/fy2019q1.pdf. Accessed June 1, 2019.
dc.identifier.citedreferenceHobson A, Curtis A. Improving the care of veterans: the role of nurse practitioners in team- based population health management. J Am Assoc Nurse Pract. 2017; 29 ( 11 ): 644 - 650.
dc.identifier.citedreferenceMorgan P, Abbott D, McNeil R, Fisher D. Characteristics of primary care office visits to nurse practitioners, physicians assistants and physicians in the United States Veterans Health Administration facilities, 2005 to 2010: a retrospective cross- sectional analysis. Hum Resour Health. 2012; 10: 42.
dc.identifier.citedreferenceAssociation of American Medical Colleges. New research shows increasing physician shortages in both primary and specialty care. 2018. https://news.aamc.org/press-releases/article/workforce_report_shortage_04112018/. Accessed June 1, 2019.
dc.identifier.citedreferenceBodenheimer TS, Smith MD. Primary care: proposed solutions to the physician shortage without training more physicians. Health Aff. 2013; 32 ( 11 ): 1881 - 1886.
dc.identifier.citedreferenceFriedberg MW, Martsolf GR, White C, et al. Evaluation of Policy Options for Increasing the Availability of Primary Care Services in Rural Washington State. Santa Monica, CA: RAND Corporation; 2016.
dc.identifier.citedreferenceKuo Y- F, Loresto J, Figaro L, Rounds LR, Goodwin JS. States with the least restrictive regulations experienced the largest increase in patients seen by nurse practitioners. Health Aff. 2013; 32 ( 7 ): 1236 - 1243.
dc.identifier.citedreferenceBureau of Labor Statistics. Occupational employment and wages, May 2017 29- 1063 Internists, General. 2017. https://www.bls.gov/oes/2017/may/oes291063.htm. Accessed June 1, 2019.
dc.identifier.citedreferenceBureau of Labor Statistics. Occupational employment and wages, May 2017 29- 1171 Nurse Practitioners. 2017. https://www.bls.gov/oes/2017/may/oes291063.htm. Accessed June 1, 2019.
dc.identifier.citedreferenceMcCleery E, Christensen V, Peterson K, Humphrey L, Helfand M. Evidence Brief: The Quality of Care Provided by Advanced Practice Nurses. Washington, DC: Department of Veterans Affairs; 2014.
dc.identifier.citedreferenceOhman- Strickland P, Orazno J, Hudson S, et al. Quality of diabetes care in family medicine practices: influence of nurse- practitioners and physician- s assistants. Ann Fam Med. 2008; 6 ( 1 ): 14 - 22.
dc.identifier.citedreferenceVenning P, Durie A, Roland M, Roberts C, Leese B. Randomised controlled trial comparing cost effectiveness of general practitioners and nurse practitioners in primary care. BMJ. 2000; 320 ( 7241 ): 1048 - 1053.
dc.identifier.citedreferenceLenz ER, Mundinger MO, Hopkins SC, Lin SX, Smolowitz JL. Diabetes care processes and outcomes in patients treated by nurse practitioners or physicians. Diabetes Educ. 2002; 28 ( 4 ): 590 - 598.
dc.identifier.citedreferenceLenz E, Mundinger M, Kane R, Hopkins S, Lin S. Primary care outcomes in patients treated by nurse practitioners or physicians: two- year follow- up. Med Care Res Rev. 2004; 61 ( 3 ): 332 - 351.
dc.identifier.citedreferenceJackson GL, Smith VA, Edelman D, et al. Intermediate diabetes outcomes in patients managed by physicians, nurse practitioners, or physician assistants: a cohort study. Ann Intern Med. 2018; 169 ( 12 ): 825 - 835.
dc.identifier.citedreferenceHebert PL, Liu CF, Wong ES, et al. Patient- centered medical home initiative produced modest economic results for Veterans Health Administration, 2010- 12. Health Aff. 2014; 33 ( 6 ): 980 - 987.
dc.identifier.citedreferenceAgency for Healthcare Research and Quality. Guide to prevention quality indicators: hospital admission for ambulatory care sensitive conditions. 2002. https://www.ahrq.gov/downloads/pub/ahrqqi/pqiguide.pdf. Accessed June 1, 2019.
dc.identifier.citedreferenceChapko MK, Liu CF, Perkins M, Li YF, Fortney JC, Maciejewski ML. Equivalence of two healthcare costing methods: bottom- up and top- down. Health Econ. 2009; 18 ( 10 ): 1188 - 1201.
dc.identifier.citedreferenceDunn A, Grosse SD, Zuvekas S. Adjusting health expenditures for inflation: a review of measures for health services research in the United States. Health Serv Res. 2016; 53 ( 1 ): 175 - 196.
dc.identifier.citedreferenceBurgess JF Jr, Maciejewski ML, Bryson CL, et al. Importance of health system context for evaluating utilization patterns across systems. Health Econ. 2011; 20 ( 2 ): 239 - 251.
dc.identifier.citedreferenceLiu CF, Batten A, Wong ES, Fihn SD, Hebert PL. Fee- for- service medicare- enrolled elderly veterans are increasingly voting with their feet to use more va and less medicare, 2003- 2014. Health Serv Res. 2018; 53 ( Suppl. 3 ): 5140 - 5158.
dc.identifier.citedreferenceHughes DR, Jiang M, Duszak R Jr. A comparison of diagnostic imaging ordering patterns between advanced practice clinicians and primary care physicians following office- based evaluation and management visits comparison of diagnostic imaging ordering patterns comparison of diagnostic imaging ordering patterns. JAMA Intern Med. 2015; 175 ( 1 ): 101 - 107.
dc.identifier.citedreferenceHemani A, Rastegar D, Hill C, Al- Ibrahim M. A comparison of resource utilization in nurse practitioners and physicians. Eff Clin Pract. 1999; 2 ( 6 ): 258 - 265.
dc.identifier.citedreferenceGoulet JL, Erdos J, Kancir S, et al. Measuring performance directly using the veterans health administration electronic medical record: a comparison with external peer review. Med Care. 2007; 45 ( 1 ): 73 - 79.
dc.identifier.citedreferenceNelson KM, Helfrich C, Sun H, et al. Implementation of the patient- centered medical home in the veterans health administration associations with patient satisfaction, quality of care, staff burnout, and hospital and emergency department use. JAMA Intern Med. 2014; 174 ( 8 ): 1350 - 1357.
dc.identifier.citedreferenceCharlson ME, Pompei P, Ales KL, MacKenzie CR. A new method of classifying prognostic comorbidity in longitudinal studies: development and validation. J Chronic Dis. 1987; 40 ( 5 ): 373 - 383.
dc.identifier.citedreferenceElixhauser A, Steiner C, Harris DR, Coffey RM. Comorbidity measures for use with administrative data. Med Care. 1998; 36 ( 1 ): 8 - 27.
dc.identifier.citedreferenceGagne JJ, Glynn RJ, Avorn J, Levin R, Schneeweiss S. A combined comorbidity score predicted mortality in elderly patients better than existing scores. J Clin Epidemiol. 2011; 64 ( 7 ): 749 - 759.
dc.identifier.citedreferenceDuan NMW, Morris C, Newhouse J. Choosing between the sample- selection model and the multi- part model. J Bus Econ Stat. 1984; 2 ( 3 ): 283 - 289.
dc.identifier.citedreferenceDuan N, Manning W, Morris C, Newhouse J. A comparison of alternative models for the demand for medical care. J Bus Econ Stat. 1983; 1 ( 2 ): 115 - 126.
dc.owningcollnameInterdisciplinary and Peer-Reviewed


Files in this item

Show simple item record

Remediation of Harmful Language

The University of Michigan Library aims to describe library materials in a way that respects the people and communities who create, use, and are represented in our collections. Report harmful or offensive language in catalog records, finding aids, or elsewhere in our collections anonymously through our metadata feedback form. More information at Remediation of Harmful Language.

Accessibility

If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.