Results of the DeLong test for pairwise comparison of c-statistics of the best performing score for each imaging category
| Prediction of HE | Prediction of severe HE | |||||
| Difference in c-statistics | Z-statistic | P value | Difference in c-statistics | Z-statistics | P value | |
| sCTA vs NCCT | 0.05 | 1.039 | 0.299 | 0.07 | 1.319 | 0.187 |
| mCTA vs sCTA | 0.09 | 2.990 | 0.003 | 0.09 | 2.492 | 0.013 |
| mCTA vs NCCT | 0.14 | 2.724 | 0.006 | 0.16 | 3.233 | 0.001 |
NCCT scores used in the analyses were the HEAVN score for HE and the NCCT Expansion Score for severe HE.
HE, haematoma expansion; HEAVN, Heterogeneity, peripheral Oedema, Anticoagulant use, Volume, Niveau formation; mCTA, multiphase CT angiography; NCCT, non-contrast CT; sCTA, single-phase CT angiography.