Document Type : Original Article


1 Student Research Committiee, Iran University of Medical Sciences, Tehran, Iran,

2 Health Management and Economics Research Center, Isfahan University of Medical Sciences, Isfahan, Iran


The purpose of this scoping review was to survey the most recent (10 years) estimating of needed
human resource in health‑care organization by Workload Indicators of Staffing Need (WISN)
method literature to understand themes and research avenues that may be helpful and beneficial
to estimating of needed staff in health‑care organizations. Our search strategy was based on
using search engines such as Medline, Google Scholar, Scopus, and PubMed as well publications
such as Elsevier, Emerald, ProQuest, and Springer. Finally, 31 articles extract for scoping review.
Scoping review findings emerge in four key points that mentioned as follow: Service delivery time,
Geographical features, Workload, and Supply and Demand. Furthermore, the strengths and weakness
of WISN extracted from literature. As conclusion, the WISN method is applicable to any health‑care
organization, and of course, in smaller institutions, it can be done more quickly and efficiently.
Where shortages of staff were identified using WISN, and if increasing the number of employees
was impossible, we could use the task shifting. WISN can be used to calculate the required human
resources for future models based on some assumptions such as the results of staff training,
demographic changes, and disease profiles and staff turnover.


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