The document discusses interactive voice response systems (IVRS) and interactive web response systems (IWRS) which are controlled by a central computer and accessed via telephone or web interfaces. These systems can be used to register and randomize patients, manage medication supply, ensure patient compliance, and collect patient reported outcomes data in global clinical trials. They allow for automated randomization, blinding, supply management, and data collection which improves efficiency.
![IVRS ,[object Object],[object Object],Gaurav Sharma](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)