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Fig. 1 | BMC Emergency Medicine

Fig. 1

From: Validation of a novel prediction model for early mortality in adult trauma patients in three public university hospitals in urban India

Fig. 1

Flow chart outlining the analysis process. In step 1, the models by Kondo et al. and Perel et al. was updated by re-estimation of the original coefficients using logit regression. Two simple models, one based only on systolic blood pressure and one based only on Glasgow coma scale, was fitted using logit regression. The basic model with systolic blood pressure and Glasgow coma scale and the basic model + heart rate were not updated in step 1, as they were derived in a previously published study using the same sample. In step 2, the basic model and the basic model + heart rate, the updated Kondo and Perel models, and the fitted systolic blood pressure and Glasgow coma scale models were validated and compared in a temporally independent sample compared to the updating sample. Both the updating and the validation samples were from the same three hospitals. i [8], ii [10], iii [22]. Abbreviations: GCS Glasgow Coma Scale, HR Heart Rate, Jan January, Jul July, Oct October, SBP Systolic Blood Pressure

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