Variability in the multicentre National Registry in Active Surveillance; a questionnaire for urologists.

Background: Our main objective was to report the current use of active surveillance in Spain and to identify areas for potential improvement.

Methods: A questionnaire generated by the Platform for Multicentre Studies of the Spanish Urology Association (AEU/PIEM/2014/0001, NCT02865330) was sent to all associate researchers from January to March 2016. The questionnaire included 7 domains covering various aspects of active surveillance.