Multivariable logistic regression for symptomatic infarct swelling
| Factors | Beta | OR | 95% CI | P values |
| Age* | −0.02 | 0.98 | 0.97 to 0.99 | 0.04 |
| NIHSS* | 0.14 | 1.15 | 1.11 to 1.18 | <0.001 |
| Large to very large infarct (vs small to medium infarct) | 0.89 | 2.44 | 1.57 to 3.79 | <0.001 |
| Allocated alteplase (vs control) | 0.53 | 1.69 | 1.11 to 2.57 | 0.01 |
| HAS presence (vs absence) | 0.79 | 2.21 | 1.42 to 3.44 | <0.001 |
*Entered as linear variables, where the OR reflected the expected change in odds for one-point increase in NIHSS or 1-year increase in age.
HAS, hyperdense artery sign; NIHSS, National Institute of Health Stroke Scale.