Figure 1.

Data collection and feedback processes of DICA registries. 1a, in survey patients are registered one by one by the registrar. Data quality is facilitated directly by required items, conditions, validations and help texts. 1b, by batch processing, hospitals can extract data from EPR and deliver it in ‘bulk’. 2a, a real-time signalling list shows all registered patients for which data are missing or erroneous. 2b, in the validation report hospitals get feedback on their submitted batches, both on patient level as in summary. 3, DICA is responsible for data cleaning, analysis, and feedback of results to hospitals and the scientific committee. 4, in MyDICA, accessible by doctors and hospital boards, weekly updated results are shown in tables and funnel plots. EPR, electronic patient records; MRDM, medical research data management.