Distribution of confidence scores for infarct presence by modality for 2 readers for a total of 352 observations
| Confidence Score | NCCT | NCCT + CTA-SI | NCCT + CTA-SI + CTP | |
|---|---|---|---|---|
| 1 | Definitely present | 5 (1.4%) | 16 (4.5%) | 42 (11.9%) |
| 2 | Probably present | 25 (7.1%) | 26 (7.4%) | 27 (7.7%) |
| 3 | Equivocal, possibly present | 83 (23.6%) | 68 (19.3%) | 18 (5.1%) |
| 4 | Equivocal, possibly absent | 4 (1.1%) | 2 (0.6%) | 18 (5.1%) |
| 5 | Probably absent | 78 (22.2%) | 89 (25.3%) | 131 (37.2%) |
| 6 | Definitely absent | 157 (44.6%) | 151 (42.9%) | 116 (33.0%) |