TABLE 2.
Primary Outcome by Statistical Model
| Statistical Modela | OR (95% CI) | p |
|---|---|---|
| 1 | 3.95 (1.57–9.93) | 0.003 |
| 1a | 3.18 (1.36–7.45) | 0.008 |
| 2 | 3.96 (1.53–10.25) | 0.005 |
| 2a | 3.27 (1.29–8.30) | 0.013 |
| 3 | 3.55 (1.08–11.63) | 0.036 |
| 3a | 2.18 (0.69–6.91) | 0.182 |
OR = odds ratio.
a
Statistical models developed using a hierarchical logistic regression for unadjusted (1) and adjusted ORs of diffuse anoxic injury as identified by neuroradiologist on CT of the head performed within 24 hr of arrest in presence of spontaneous hypothermia (SH) controlling for demographic features and number of comorbidities (2), and demographic features, number of comorbidities, and clinical features of the cardiac arrest (3). Model subsets represent the same statistical models for unadjusted (1a) and adjusted (2a and 3a) ORs of gray-white matter ratio < 1.18 in presence of SH controlling for aforementioned features.