Table 2. Internal and external validation of our developed model.
Internal validation | Model 1 | Model 2 | Model 3 | |
Calibration | Calibration Intercept | 0.0003 | 0.0028 | 0.0004 |
Calibration slope | 0.9959 | 0.9981 | 0.9931 | |
External validation | ||||
Discrimination | c statistic | 0.965 | 0.964 | 0.964 |
[95% CI] | [0.953–0.977] | [0.952–0.976] | [0.952–0.975] |
Model 1: patients who were admitted to our hospital within 12 h after ingestion of paraquat.
Model 2: patients who were admitted to our hospital within 24 h after ingestion of paraquat.
Model 3: all patients who were admitted to our hospital at any time after ingestion of paraquat.