Graduate School of Business


Doctor of Business Administration (DBA)


Ranjan George


global supply chain, supply chain management, just-in-time, just-in-case, inventory management, COVID-19 pandemic, healthcare, medical systems


Business | International and Area Studies


The purpose of this quantitative study was to gain a deeper understanding on the impact that the COVID-19 pandemic had on the global supply chain, particularly in the southeastern region of the United States. The study involved a population comprised of professionals employed in medical systems who possessed a working knowledge of supply chain management. The researcher distributed online surveys via an online survey platform to a list of medical systems professionals in both the public and private sectors. The sample size was 396 professionals, and the number of respondents was 201, once the prospective research participants were properly vetted. The data were analyzed using an array of statistical techniques, including Spearman’s rho technique and Pearson’s r. The dependent variable PPE and the corresponding independent variables were just-in-time and just-in-case inventory management approaches. The researcher conducted a power analysis to determine the strength of the association between the dependent variable PPE and the independent variables JIT and JIC, as well as the mediating variable COVID-19. The two-sided test was performed based on Fisher's z-transformation, with a typical approximation inclusive of a bias adjustment. Recommendations for further research include developing an enhanced supply chain management system. Four points worth considering for further research include a) research participants; (b) geographic location; (c) selection of medical commodities; and (d) timing of the study.