1. Ravangard R, Arab M, Zeraati H, Rashidian A, Akbarisari A, Niroomand N, et al. A study of patient length of stay in tehran university of medical sciences' obstetrics and gynecology specialty hospital and its associated clinical and nonclinical factors. Hakim Res J. 2010 13(2) 129-136. doi:10.1080/10645578.2010.509691
2. Karimi I. Health economic. Rasht: Gap. 2003.
3. Pritchard RD. Productivity measurement and improvement: organizational case studies. Greenwood Publishing Group. 1995.
4. Rantanen H. The effects of productivity on profitability: a case study at firm level using an activity-based costing approach. LTKK Tieteellisiä julkaisuja-Research Papers. 1995.
5. Roghanian P, Rasli A, Gheysari H. Productivity through effectiveness and efficiency in the banking industry. Procedia - Soc Behav Sci [Internet]. 2012; 40: 550-6 doi:10.1016/j.sbspro.2012.03.229
6. Pourreza A, Goudarzi G, Azadi H. Determination of technical efficiency of hospitals affiliated with Tehran University of Medical Science by the data envelopment analysis method: 1996-2006. J Sch Public Heal Inst Public Heal Res. 2009;7(4):79-86.
7. Jocobs P, Rapoport J. The economics of health and medical care. 3rd ed New York Aspen Publ. 1997;
8. Kuntz L, Scholtes S, Vera A. Incorporating efficiency in hospital-capacity planning in Germany. Eur J Heal Econ. 2009; 8: 213-23. doi:10.1007/s10198-006-0021-6
9. Bahadori M. Performance indicators in the Medicine and Medical Equipment. J Med Eng Lab Equip. 2007;7(74):4-6.
10. Lai Z. Capacity utilization and productivity analysis in the Canadian Food Manufacturing Industry. Food, Agricultural, and Resource Economics; 2015.
11. Basu S. Pro-cyclical Productivity: Increasing returns or cyclical utilization? Quaterly J Econ. 1996; 111(3):719-51. doi:10.2307/2946670
12. Smith A. "How Are We Doing ?" Tracking efficiency, utilization, and productivity. Univers J Ind Bus Manag. 2013; 1(4):137-40.
13. Newbrander W, Barnum H, Kutzin J. Hospital economics and financing in developing countries. Geneva: World Health Organisation. 1992.
14. Evans R. Tension, compression, and shear: directions, stresses, and outcomes of health care cost control. J Heal Polit Policy Law. 1990;15:101-28. doi:10.1215/03616878-15-1-101
15. Kanwar V, Gupta AK, Goel S, Gupta PK. Hospital bed utilization: perceptions of healthcare practitioners from Northern India. Int J Hosp Res. 2015; 4(3):113-8.
16. Backe B. Overutilization of antenatal care in Norway. Scand J Public Heal. 2016;29(2):129-32. doi:10.1080/14034940152393390
17. Black D, Pearson M. Average length of stay, delayed discharge, and hospital congestion. BMJ. 2002;325(7365):610-1. doi:10.1136/bmj.325.7365.610
18. Campbell J. Inappropriate admissions: thoughts of patients and referring doctors. J R Soc Med. 2001; 94 (12): 628-31. doi:10.1177/014107680109401206
19. Celik Y, Celik S, Bulut H, Khan M, Kisa A. Inappropriate use of hospital beds: a case study of university hospitals in Turkey. World Hosp Heal Serv. 2001;37(1):6-13.
20. DeCoster C, Roos N, Carriere K, Peterson S. Inappropriate hospital use by patients receiving care for medical conditions: targeting utilization review. Cmaj. 1997;157(7):889-96.
21. Panis L, Gooskens M, Verheggen F, Pop P, Prins M. Predictors of inappropriate hospital stay: a clinical case study. Int J Qual Heal Care. 2003;15(1):57-65. doi:10.1093/intqhc/15.1.57
22. Payne S. Identifying and managing inappropriate hospital utilization: a policy synthesis. Heal Serv Res. 1987; 22(5):709-69.
23. Dempsey J. The appropriateness of admissions and the influences on a decision to admit. J Qual Clin Pr. 2000;20(2):95-9. doi:10.1046/j.1440-1762.2000.00373.x
24. Alche-Gautier M, Maiza D, Chastang F. Assessing the appropriateness of hospitalisation days in a French university hospital. Int J Heal Care Qual Assur Inc Leadersh Heal Serv. 2004;17(2):87-91. doi:10.1108/09526860410526709
25. Restuccia J, Kreger B, Payne S, Gertman P, Dayno S, Lenhart G. Factors affecting appropriateness of hospital use in Massachusetts. Heal Care Financ Rev. 1986;8(1):47-54.
26. Smith CB, Goldman RL, Martin DC, Williamson J, Weir C, Beauchamp C, et al. Overutilization of acute-care beds in veterans affairs hospitals. Med Care. 1996; 34(1): 85-96. doi:10.1097/00005650-199601000-00007
27. Vaz F, Ferreira A, Motghare D, Kulkarni M. Bed utilization rates at a tertiary care hospital in Goa . Indian J Community Med. 2006;31(3):149.
28. Ansari H, Ebadifard Azar F. Principles of hospital administration and planning. Samat. Tehran; 1998.
29. Kiran E, Vijayan K. Utilization of beds in a tertiary care hospital. J Acad Hosp Adm. 2003;15(2): 7-12.
30. Francis C. Hospital Management. Tehran. Kebriaie A, editor. 2000.
31. Fontaine P, Jacquesb J, Gillain D, Sermeusc W, Kolha P, Gillet P. Assessing the causes inducing lengthening of hospital stays by means of the Appropriateness Evaluation Protocol. Health Policy (New York). 2011;99:66-71. doi:10.1016/j.healthpol.2010.06.011
32. Tamames S, Perez Rubio A, Castrodeza Sanz, J Canton Alvarez, MB Luquero F, Santos Sanz S, et al. Factors associated with the appropriate use of preparatory hospital stays: historical cohort study. BMC Heal Serv Res. 2007;19(7):187. doi:10.1186/1472-6963-7-187
33. Sangha O, Schneeweiss S, Wildner M, Cook E, Brennan T, Witte J, et al. Metric properties of the appropriateness evaluation protocol and predictors of inappropriate hospital use in Germany: an approach using longitudinal patient data. Int J Qual Heal Care. 2002;14(6):483-92. doi:10.1093/intqhc/14.6.483
34. Fekari A, Ghiasi A, Ezzati M, Pakdaman M, Khalafi A. The assessing of inappropriate admissions and hospitalization based on appropriate evaluation protocol in Alinasab hospital in Tabriz. Hosp J. 2009; 9: 39-43.
35. Hatam N, Askarian M, Sarikhani Y. Necessity of admissions in selected teaching university affiliated and private hospitals during 2007 in Shiraz, Iran. Arch Iran Med. 2010;13(3):230-4.
36. Bakhtari A, Vahidi R, Noorizade R, Mohammadpoorasl A, Kavoosi Z. Inappropriate admissions and impatience in Imam Khomeini Hospital of Tabriz University of Medical Sciences. Res J Biol Sci. 2007;2(4):468-71.
37. Nabilou B, Mohebi I, Alinejad H. Hospital bed productivity: evaluation of hospital bed necessity in selected hospitals of west Azerbaijan province. Urmia Sch Nurs Midwifery. 2011;10(4):565-71.
38. Ministry of Health. Definitions of items in hospital statistics in line with the clinical governance services [Internet]. Iran; 2018 [cited 2018 Oct 13]. p. 1-6.
39. Ghorbani Nia R, Ahmadian K, Ranjbar Z. To compare the performance indexes of selected hospital with national standards. J Heal Promot Manag. 2017;6(5):1-7. doi:10.21859/jhpm-07031
40. Yaghoubi M, Soltani Zarandi MR, Rahmati-Najarkolaei F. Factors Affecting Bed Occupancy Rate Based on Multiple-Criteria Decision Analysis (Hierarchical Analysis) in a Military Hospital. J Mil Med. 2017; 19(4):344-50.
41. Nabilou B, Mohebi I, Alinejad H. Utilization of Hospital beds: Assessing the necessity of hospital bed usage in selected hospitals in West Azarbaijan province. J Urmia Nurs Midwifery Fac. 2011;10 (4):565-71.
42. Ameri H, Adham D, Panahi M, Khalili Z, Fasihi A, Moravveji M, et al. Predictors for duration of stay in hospitals. J Heal. 2017;6(3):256-65.
43. Mahmoudi S, Gholampour Noghondar Z, Habibi Nodeh F, Safari H, Abbasi Borogeni P. Identifying and Prioritizing Factors Affecting Patient's Length of Stay in Selected Hospitals Affiliated to Tehran and Iran University of Medical Sciences. J Ho. 2018; 16(4):53-62.
44. Alexandraki I, Palacio C, House J, Mooradian AD. Hospital bed utilization by teaching and nonteaching medical services. Health Care Manag (Frederick). 2012;31(4):295-301. doi:10.1097/HCM.0b013e31826fe26c
45. Harrison JP, Fache MBAMHA, Ogniewski RJ. An efficiency analysis of veterans health administration hospitals. Mil Med. 2005;170(7):607-11. doi:10.7205/MILMED.170.7.607
46. Hosseini-Shokouh S-M, Sadeghian K, Ameryoun A, Zaboli R. Organizational factors affecting a patient's average length of stay in hospital: systematic review. J Mil Med. 2019;20(6):577-88.