Figure 1

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Figure 1: The core shared model of dementia risk system. A) The 89 factors (“nodes”) and 417 causal relationships among them (“edges”) which appeared in the models of at least two of the 36 model-building groups, comprised feedback loops, and were connected to dementia risk (blue central node). Edges may be positive (cause increases effect, blue arrow) or negative (cause decreases effect, pink arrow) and size represents number of models proposing the edge. B) a small sector of the large model, with nodes ‘Community support’, ‘Self care’, ‘Sleep’, ‘Exercise’, ‘Brain activity’, ‘Mental health stigma’, and ‘Knowledge of family health history’ shown.