Integrating Blockchain for Healthcare Group Decision Making

Group Decision-making (GDM) is very much required and practiced in healthcare, also through the healthcare decision support system (HDSS). However, it may lack transparency and trust in balancing the risk and expected decision. Also, the absence of trust can heavily undermine the decision quality. We here propose a blockchain-based solution using smart contract to facilitate the decision-making process in healthcare based on the decentralized technology. In general, in a GDM and particularly in healthcare, the opinions expressed by the expert may have some degree of risk associated with it, and we address this issue through 2-Tuple fuzzy preference representation. We propose a consensus-based GDM model that uses a 2-Tuple fuzzy preference relation for smart contract. Remix IDE is used to develop and test the smart contract code in the Ethereum blockchain environment. We demonstrate the applicability of the proposed blockchain-based solution and its security and cost analysis.