A Study On Contractual Coordination Of Pharmaceeutical Group Procurement Supply Chain Considering Demand Information Sharing

The double marginal effect and the bullwhip effect due to information asymmetry are common phenomena in the actual operation of drug supply chains.The introduction of drug GPOs increases the risk of the above two effects,which in turn leads to the failure of decision making and the reduction of operational efficiency in the drug supply chain.In order to solve the above problems,this paper establishes a coordination model of quantity discount and revenue sharing contract in the pharmaceutical supply chain with GPOs under demand information sharing in a four-level supply chain consisting of pharmaceutical suppliers,pharmaceutical GPOs,medical institutions,and pharmaceutical buyers,and solves the model by combining the Steinberg game theory approach and the inverse induction method and conducts numerical simulation analysis.The research results show that:(1)Under certain conditions,demand information sharing has the impact of increasing demand and drug GPO revenue of each supply chain member,increasing supply chain revenue and achieving supply chain coordination;quantity discount contract has the impact of increasing revenue of medical institutions and reducing procurement cost of medical institutions;both together have the impact of reducing procurement cost of medical institutions and drug purchasers.(2)Under the combined effect of market demand forecast value,market competition and revenue sharing ratio,demand information sharing and revenue sharing contract can promote supply chain revenue and achieve supply chain coordination.Among them,under certain conditions,demand information sharing can increase the procurement demand of medical institutions,and the higher the revenue sharing ratio,the higher the procurement demand of drug GPOs and the higher the procurement price of drug purchasers.(3)When the degree of revenue sharing and quantity discount rate are high,the selection of quantity discount pact can increase the procurement demand volume and the revenue of drug GPOs and healthcare organizations and reduce the procurement cost.Conversely,the selection of revenue sharing pact for coordination,while the inclusion of demand information sharing will promote the supply chain revenue and strengthen the coordination effect of the pact.The results of the study can provide a boost to the theoretical cognition and management practice of innovative and improved coordinated operation of pharmaceutical GPO supply chain.It will play a guiding role for pharmaceutical companies implementing contract strategy under demand information sharing.Facing the current situation of poor information and double marginal effect and bullwhip effect on the supply chain,companies should do a good job of market research,strengthen cooperation and do a good job of contract matching,accurately grasp the needs of pharmaceutical suppliers and purchasers,take corresponding contract strategy in time under different conditions,actively seek demand information sharing services Cooperation,while paying attention to market competition,do a good job of enterprise market demand forecast.