Nomograms based on pre-operative parametric for prediction of short-term mortality in acute myocardial infarction patients treated invasively

Figure 1. Kaplan-Meier survival curves of 1-year survival according to six predictors. The x-axis represents the time and the y-axis represents the overall survival in different subgroups. (A) age, (B) eGFR, (C) Systolic Blood Pressure, (D) heart rate, (E) BNP, and (F) Troponin I.

Figure 2. Nomogram developed for predicting 30-day mortality and 1-year mortality. Nomogram for 30-day mortality of AMI patients. The first row: point assignment of the variables; the second to seventh rows: six predictors; the eighth row: total points of six predictors; the ninth row: linear predictor; the tenth row: risk of 30-day mortality; and the eleventh row: risk of 1-year mortality.

Figure 3. Calibration curve of the new model for predicting 30-day and 1-year mortality in the training group and the validation group. (A) Calibration curve of the new model for predicting 30-day in the training group. (B) Calibration curve of the new model for predicting 1-year in the training group. (C) Calibration curve of the new model for predicting 30-day in the validation group. (D) Calibration curve of the new model for predicting 1-year mortality in the validation group.

Figure 4. C-index of the new model in the training group and the validation group. C-index was calculated to evaluate the discrimination of the model and illustrated in this figure.

Figure 5. Comparison in predicting 30-day and 1-year mortality between the C-AMI model and the GRACE score. (A) NRI was calculated in the training cohort. We used 10% and 30% as thresholds to define patients at low (<10%), intermediate (10–30%), and high risk (>30%). IDI were also listed above. (B) NRI and IDI of the new model comparing with GRACE risk score for predicting 1-year mortality.

Figure 6. Adjustment of the GRACE score by C-AMI model enables a more accurate appreciation of risk stratification in AMI patients. (A, B) Reclassification ability of C-AMI model and GRACE score for 30-day (A) and 1-year mortality (B). NRI and IDI were calculated.

Figure 7. Calibration curve of the new model for predicting 30-day and 1-year mortality in prospective cohort. (A) Calibration curve of the new model for predicting 30-day in prospective group. (B) Calibration curve of the new model for predicting 1-year in prospective group.