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These predictors are used to construct a nomogram. C index is 0.81 (95% confidence interval0.79-0.83). The combination of the calibration curve and ROC curve indicates that the model has high discriminability. The decision curve shows benefits in clinical practice when the threshold probability is 6% and 58%, respectively. The internal verification results using Harrell's C-Index were 0.80 (95% confidence interval 0.78-0.83). Combining information such as age, sex, barbeque, smoking, passive smoking, type of energy, ventilation