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Fig. 2 | BMC Medical Research Methodology

Fig. 2

From: Addressing data privacy in matched studies via virtual pooling

Fig. 2

Schematic of distributed data. The analytical center is indicated by dashed red square and the nodes are indicated by solid blue circles. The arrows indicate the flow of information: the dashed red arrows represent the flow of instructions from center to nodes and the solid blue arrows represent the flow of aggregate data from the nodes to the center. Since the aggregate data do not reveal individual-level covariate combinations, and the center does not own microdata, the information flow is preserves data confidentiality

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