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Importance of independent variables.
| Independent variable | Importance | Importance of standardization |
|---|---|---|
| SI | 0.144 | 100.0% |
| Aspiration pneumonia | 0.120 | 83.2% |
| DC | 0.076 | 52.4% |
| Subarachnoid hemorrhage | 0.033 | 23.2% |
| ICP monitoring | 0.032 | 22.4% |
Compared with SI, the standardized importance of aspiration pneumonia, DC, SAH, and ICP monitoring were 83.2, 52.4, 23.2, and 22.4%, respectively. Standardized importance analysis showed that SI was the primary predictor of PTCI.
