Fig. 3

Step-by-step overview of the data flow to enable data linkage between health survey data, genomic data, administrative data and cancer registry data in a pilot study conducted at the national level in Belgium
NRN: national register number; aNRN: pseudonymised national register number; RN: random number; TTP: trusted third party; PC: project code; SCRA: small cell risk analysis. The figure shows the design of the data flow, where data (represented by solid arrows) and personal identifiers (represented by dashed arrows) are consistently kept separate