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Table 3 CRF and database statistics per year

From: Changing platforms without stopping the train: experiences of data management and data management systems when adapting platform protocols by adding and closing comparisons

  1. 1Excluding ‘stratified STAMPEDE’ pilot 2018 (different database and CRFs not discussed here)
  2. 2Any new or updated version. FOCUS4 includes all database designs
  3. 3A new database design was introduced in 2017 for FOCUS4 Comparison C, but the data are currently saved to the same responses table
  4. 4Tickets include requests for updates to database, reports, website, randomisation server. The unit did not mandate using ticket system pre-2012, so these data are not representative of all changes