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COMPARATIVE META-ANALYTIC EVALUATION OF THE IMPACT OF SUPPLY CHAIN INTEGRATION ON PERFORMANCE: A DETAILED PERSPECTIVE OF MODERATOR AND MEDIATOR ANALYSIS

In an environment with ever changing customers’ needs and intensifying global competition, quality processes and supply chain (SC) are critical for organisational success. To satisfy customers, outsmart competition and improve performance, contemporary organisations are trying to improve on their processes through integrated supply chains. 
In an attempt to address this question and effectively contribute to this topic, a comparative meta- analytical evaluation along with key moderator and mediator analysis was conducted. In the lens of many theories, SCI from two perspectives; SCID (internal, suppliers, customer integration) with 67 studies and SCIF (information, operational, relational integration) with 25 studies was assessed on overall performance as well as on both operational and business performance. A quantitative meta-analysis based on Hunter and Schmidt (2004) which was performed through Jamovi, revealed the following: The meta-analysis results which were obtained through Jamovi provided significant correlation coefficients for SCID and SCIF respectively (ř = .476, p <.002) and (ř =.508, p <.001). Therefore, indicating that the association between SCID and performance is medium and positive, while that of SCIF and performance is positive and large. This is a clear indication that SCI from the perspective of SCID and SCIF yields different results, with SCIF having a relatively large effect. Moreover, on average SCIF both at aggregate and individual level has a slightly large effect on performance than SCID. Operational performance was the most influenced by SCID and SCIF, although operational and relational integration indicated a significant larger effect on business performance. Thus, individual SCID and SCIF constructs have different effects on business and operational as overall performance. All moderators though with different levels of interactions indicated a significant effect on both SCID and SCIF. Of the three mediators tested, customer integration had a 32% negative effect, SC agility showed an 89.1% full mediation effect with flexibility indicating a 53% significant effect.