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Fig. 1 | BMC Public Health

Fig. 1

From: Predicting medical usage rate at mass gathering events in Belgium: development and validation of a nonlinear multivariable regression model

Fig. 1

Multivariable regression tree for PPR. Each square contains the hierarchical number of the split and the name of the splitting variable (MG cat.: MG category; age: age class; days: number of days; attend: attendance). CF: city festival; IE: indoor EDM; ID: indoor dance; OE: outdoor EDM; OM: outdoor music; SE: sports event. See Table 1 for age classes. Each blue circle contains the number of the terminal node. Numbers in bold indicate the predicted PPR per 10,000 visitors for each terminal node (mean ± standard deviation) and the number of MGs (n) in this node

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BMC Public Health

ISSN: 1471-2458

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