“…Actually, hospitals have a key role in providing health services because of their impact on the health system's efficiency (Khosravizadeh et al, 2016). In this regard, in the health care system, a kind of management can be productive which provides high quality and cost-effective services (Mohebbifar et al, 2014), achieving this goal will be possible by the correct and reasonable use of resources, controlling hospital admissions and the length of stay of hospitals patients and also the appropriate use of diagnostic and therapeutic services (Ravangard et al, 2010). The length of hospital stay is often considered as a measure…”