Central statistical monitoring can both optimize on-site monitoring and improve data quality and as such provides a cost-effective way of meeting regulatory requirements for clinical trials.
Venet, D., Doffagne, E., Burzykowski, T., Beckers, F., Tellier, Y., Genevois-Marlin, E., Becker, U., Bee, V., Wilson, V., Legrand, C., & Buyse, M. (2012). A statistical approach to central monitoring of data quality in clinical trials. Clinical Trials, 9(6), 705-713. https://doi.org/10.1177/1740774512447898 (Original work published 2012)