Table 2 Comparison between the random forest model and multivariable logistic regression analysis.
Variable | Random forest | Multivariable logistic regression | ||||
|---|---|---|---|---|---|---|
Importance | Category | Odds ratio | CI lower | CI upper | Significance | |
Initial NIHSS | 1.00 | Very high | 0.86 | 0.86 | 0.87 | p < 0.001 |
Age | 0.90 | Very high | 0.98 | 0.97 | 0.98 | p < 0.001 |
Onset to image time (min) | 0.70 | Very high | 1.00 | 1.00 | 1.00 | – |
Onset to door time (min) | 0.65 | Very high | 1.00 | 1.00 | 1.00 | – |
Charlson comorbidity index | 0.55 | High | 0.76 | 0.75 | 0.78 | p < 0.001 |
Intravenous thrombolysis | 0.45 | High | 1.36 | 1.28 | 1.43 | p < 0.001 |
Dysphagia | 0.35 | High | 1.45 | 1.37 | 1.53 | p < 0.001 |
Initiation of oral diet | 0.30 | High | 0.11 | 0.09 | 0.14 | p < 0.001 |
Rehabilitation treatment | 0.28 | Medium | 1.73 | 1.64 | 1.83 | p < 0.001 |
Screening of dysphagia | 0.25 | Medium | 0.66 | 0.59 | 0.74 | p < 0.001 |
Rehabilitation consult | 0.23 | Medium | 2.76 | 2.53 | 3.02 | p < 0.001 |
EMS | 0.20 | Medium | 1.39 | 1.32 | 1.47 | p < 0.001 |
Diagnostic image check | 0.18 | Medium | 1.06 | 1.04 | 1.09 | p < 0.001 |
Stroke unit | 0.15 | Medium | 0.79 | 0.74 | 0.84 | p < 0.001 |
Hospital volume | 0.13 | Medium | 0.99 | 0.98 | 0.99 | p < 0.001 |
Sex | 0.10 | Medium | 0.84 | 0.79 | 0.88 | p < 0.001 |
Antiplatelet medication | 0.09 | Low | 0.96 | 0.88 | 1.05 | – |
Smoker | 0.09 | Low | 1.09 | 1.03 | 1.16 | p < 0.01 |
Anticoagulant medication | 0.08 | Low | 0.97 | 0.91 | 1.02 | – |
Status of health insurance | 0.08 | Low | 0.74 | 0.67 | 0.81 | p < 0.001 |
Atrial fibrillation | 0.07 | Low | 0.83 | 0.74 | 0.94 | p < 0.01 |
Surgery | 0.07 | Low | 0.99 | 0.98 | 1.00 | – |
No antithrombotic medication | 0.06 | Low | 0.38 | 0.32 | 0.46 | p < 0.001 |
ER visit route | 0.05 | Low | – | |||
Mechanical thrombectomy | 0.05 | Low | 2.62 | 2.19 | 3.13 | p < 0.001 |
Lipid profile test | 0.04 | Low | 0.90 | 0.81 | 1.00 | p < 0.05 |
