[1] Burkett E, Martin-Khan MG, Scott J, Samanta M, Gray LC. Trends and predicted trends in presentations of older people to Australian emergency departments: Effects of demand growth, population aging, and climate change. Aust Health Rev. 2017; 41(3): 246–253. doi: 10.1071/AH15165
[2] Garland A, Gershengorn HB. Staffing in ICUs: Physicians and alternative staffing models. Chest. 2013 143: 214–221. doi: 10.1378/chest.12-1531
[3] Kleinpell R, Ward NS, Kelso LA, Mollenkopf FP Jr, Houghton D. Patient to provider ratios for nurse practitioners and physician assistants in the ICU: Results from a national survey. Am J Critical Care, 2015; 24: e16–e21. doi: 10.4037/ajcc2015274
[4] Ward NS, Afessa B, Kleinpell R, Tisherman S, Ries M, Howell M, Members of Society of Critical Care Medicine Taskforce on ICU Staffing. Intensivist/patient ratios in closed ICUs: A statement from the Society of Critical Care Medicine Taskforce on ICU Staffing. Critical Care Medi, 2013; 41: 638–645. doi: 10.1097/CCM.0b013e3182741478
[5] Benjamin C, Renee Y, Robert Y, David Z, Li-Jung L, Woijuan H, et al. Effect of emergency department crowding on outcomes of admitted patients. Ann Emerg Medi, 2013 61(6): 605– 611. doi: 10.1016/j.annemergmed.2012.10.026
[6] Chang AM, Cohen DJ, Lin A, Augustine J, Handel DA, Howell E, et al. Hospital strategies for reducing emergency department crowding: A mixed-methods study. Ann Emerg Medi, 2018; 71(4): 497–505 e494. doi: 10.1016/j.annemergmed.2017.07.022
[7] Singer AJ, Thode HC Jr, Viccellio P, Pines JM. The association between length of emergency department boarding and mortality. Acad Emerg Medi, 2011; 18(12): 1324–1329. doi: 10.1111/j.1553-2712.2011.01236.x
[8] Drew BR. The access-block effect: Relationship between delay to reaching an inpatient bed and inpatient length of stay. Medi J Aust, 2002; 177: 492–495.
[9] Imperato J, Darren SM, Leon DS, Gary S. Improving patient satisfaction by adding a physician in triage. J Hosp Adm, 2013; 3: 7–13. doi: 10.5430/jha.v3n1p7
[10] Pines JM, Iyer S, Disbot M, Hollander JE, Shofer FS, Datner EM. The effect of emergency department crowding on patient satisfaction for admitted patients. Acad Emerg Medi, 2008; 15(9): 825–831. doi: 10.1111/j.1553-2712.2008.00200.x
[11] Fry M, Fong J, Asha S, Arendts G. A 12-month evaluation of the impact of transitional emergency nurse practitioners in one metropolitan emergency department. Australas Emerg Nurs J, 2011; 14(1): 4–8. doi: 10.1016/j.aenj.2010.10.001
[12] Steiner IP, Nichols DN, Blitz S, Tapper L, Stagg AP, Sharma L, et al. Impact of a nurse practitioner on patient care in a Canadian emergency department. Can J Emerg Medi, 2009; 11(3): 207–214. doi: 10.1017/s1481803500011222
[13] van der Linden C, Reijnen R, de Vos R. Diagnostic accuracy of emergency nurse practitioners versus physicians related to minor illnesses and injuries. J Emerg Nurs, 2010; 36(4): 311–316. doi: 10.1016/j.jen.2009.08.012
[14] Jennings N, O’Reilly G, Lee G, Cameron P, Free B, Bailey M. Evaluating outcomes of the emergency nurse practitioner role in a major urban emergency department, Melbourne, Australia. J Clin Nurs, 2008; 17(8): 1044–1050. doi: 10.1111/j.1365-2702.2007.02038.x
[15] Middleton S, Gardner A, Gardner G, Della P. The status of Australian nurse practitioners: The second national census. Aust Health Rev, 2011; 35: 448–454. doi: 10.1071/AH10987
[16] Advanced Practice Registered Nurse (APRN) Consensus Group Work Group & the National Council of State Boards of Nursing APRN Advisory Committee. Consensus Model for APRN regulation: Licensure, Accreditation, Certification, and Education. 2008. http://www.nonpf.org/associations/10789/files/APRNConsensusModelFinal09.pdf.
[17] International Council of Nurses. International Council of Nurses Nurse Practitioner/Advanced Practice Nursing Network. Definition and characteristics of the role. 2020. http://international.aanp.org/Practice/APNRoles
[18] American Association of Nurse Practitioners. All about NPs. 2020. https://www.aanp.org/about/all-about-nps/whats-a-nurse-practitioner
[19] Canadian Nurses Association. Nurse practitioners-untapped resource. 2018. https://cna-aiic.ca/-/media/cna/page-content/pdf-en/2019-nurse-practitioners-untapped- resource.pdf?la=en&hash=FD0A9731A2C7D00B3F0D23FE0A51BBF89858BC A4
[20] Australian College of Nurse Practitioners. Annual report. 2019. https://www.acnp.org.au/client_images/2142541.pdf
[21] McDevitt J, Melby V. An evaluation of the quality of emergency nurse practitioner services for patients presenting with minor injuries to one rural urgent care centre in the UK: A descriptive study. J Clin Nurs, 2015; 24(3/4): 523–535. doi: 10.1111/jocn.12639
[22] McDonnell A, Goodwin E, Kennedy F, Hawley K, Gerrish K, Smith C. An evaluation of the implementation of advanced nurse practitioner (ANP) roles in an acute hospital setting. J Adv Nurs, 2015; 71(4): 789–799. doi: 10.1111/jan.12558
[23] Pirret AM, Neville SJ, La Grow SJ. Nurse practitioners versus doctors diagnostic reasoning in a complex case presentation to an acute tertiary hospital: A comparative study. Int J Nurs Stud, 2015; 52(3): 716–726. doi: 10.1016/j.ijnurstu.2014.08.009
[24] Considine J, Martin R, Smit D, Winter C, Jenkins J. Emergency nurse practitioner care and emergency department patient flow: A case-control study. Emerg Medi Australas, 2006; 18(4): 385–390. doi: 10.1111/j.1742-6723.2006.00870.x
[25] Byrne G, Richardson M, Brunsdon J, Patel A. An evaluation of the care of patients with minor injuries in emergency settings. Accid Emerg Nurs, 2000; 8(2): 101–109. doi: 10.1054/aaen.2000.0102
[26] Middleton S, Gardner G, Gardner A, Considine J, Fitzgerald G, Christofis L, et al. Are service and patient indicators different in the presence or absence of nurse practitioners? The EDPRAC cohort study of Australian emergency departments. BMJ Open, 2019 9(7), e024529. doi: 10.1136/bmjopen-2018-024529
[27] Statistics Bureau of Japan. Current population estimates as of October 1, 2019. https://www.stat.go.jp/english/data/jinsui/2019np/index.html
[28] Fukuda H, Miyauchi S, Tonai M, Ono M, Magilvy JK, Murashima S. The first nurse practitioner graduate programme in Japan. Int Nurs Rev, 2014; 61: 487–490. doi: 10.1111/inr.12126
[29] Fougère B, Morley JE, Decavel F, Nourhashemi F, Abele P, Resnick B, et al. Development and implementation of the advanced practice nurse worldwide with an interest in geriatric care. J Am Medi Dir Assoc, 2016; 17(9): 782–788. doi: 10.1016/j.jamda.2016.05.009
[30] Erin D, Gerald ML, Kendall M. (2015). Impact of trainees on length of stay in the emergency department at an academic medical center. South Medi J, 2015; 108(5): 245–248.
[31] Stephen DG, Stephen EL, Michael S, Elizabeth E, Darren S, Julian S. Why do ‘fast track’ patients stay more than four hours in the emergency department? An investigation of factors that predict length of stay. Emerg Medi Australas, 2018; 30(5): 641–647. doi: 10.1111/1742- 6723.12964
[32] Alexander B, Gil S, Yuri B, Dan H. The emergency department length of stay: Is the time running out? Chin J Traumatol, 2019; 22(3): 125–128. doi: 10.1016/j.cjtee.2019.01.008
[33] Holland LL, Smith LL, Blick KE. Reducing laboratory turnaround time outliers reduces emergency department patient length of stay: An 11 hospital study. Am J Clin Path, 2005; 124(5): 672–674. doi: 10.1309/E9QP-VQ6G-2FBV-MJ3B
[34] Umesh NK, Michele LJ, Curtis R, Monica BK, Randall T, Saeed RS, William JB. Emergency department physician activation of the catheterization laboratory and immediate transfer to an immediately available catheterization laboratory reduce door-to-balloon time in ST- elevation myocardial infarction. Circulation, 2007; 116(1): 67–76. doi: 10.1161/CIRCULATIONAHA.106.677401
[35] Kasagi M, Ohtomo Y, Kawahara K. Analysis of the diversity and problems of the emergency medical system in Japan: from the viewpoint of a comparison with the North America ER system. Journal of Japanese Assoc Acute Medi, 2009; 20: 349-60.
[36] Pearson E. Mathematical contribution to the theory of evolution. VII. On the correlation of characters not quantitatively measurable. Philos Trans R Soc A, 1900; 195: 1–47. doi: 10.1098/rsta.1900.0022
[37] Sheskin DJ. (5th Ed). Handbook of parametric and nonparametric statistical procedures. Boca Raton, FL: Chapman & Hall/CRC; 2011.
[38] Allerston J, Justham D. A case control study of the transit times through an accident and emergency department of ankle injured patients assessed using the Ottawa Ankle Rules. Accid Emerg Nurs, 2000; 8: 148–154. doi: 10.1054/aaen.2000.0104
[39] Matsumoto M, Inoue K, Takeuchi K. Quality of care in Japan: An additional strategy. Lancet, 2011; 378(9807): e17. doi: 10.1016/s0140-6736(11)61841-2
[40] Ministry of Health, Labor, and Welfare. Outline of the act on the arrangement of related acts to promote work style reform. 2019. https://www.mhlw.go.jp/english/policy/employ- labour/labour-standards/dl/201904kizyun.pdf
[41] Kutzleb J, Rigolosi R, Fruhschien A, Reilly M, Shaftic AM, Fruhschien A, et al. Nurse practitioner care model: Meeting the health care challenges with a collaborative team. Nurs Econ, 2015; 33(6): 297–305.