Table 4.
Performance of the Cox model and the random forest classification model. Cox model adjusted for age, sex, modified CCI, hypertension, diabetes, hyperlipidemia, temperature, relative humidity, PM2.5, NO2, and SO2 in the corresponding year. Random forest classification: age, sex, modified CCI, hypertension, diabetes, hyperlipidemia, temperature, relative humidity, PM2.5, CO, SO2, NO, NO2, NOx, and O3.
| Cox model | Random forest | ||
|---|---|---|---|
| AUC | AUC | Accuracy | |
| Year 1 | 0.79 | 0.76 | 0.70 |
| Years 1–3 | 0.79 | 0.76 | 0.70 |
| Years 1–5 | 0.79 | 0.76 | 0.70 |
| Years 1–10 | 0.78 | 0.75 | 0.69 |