Table 1.
CT Scan – General Information (Overall) and Kappa by Arm and Overall
| Radiological Feature | Feature Present N (%)* | Overall N=53 | Spoke Radiology & Hub Neuroradiology N=27 | Telestrokology & Hub Neuroradiology N=26 | |
|---|---|---|---|---|---|
| N (%)Agreement | Kappa (95 %CI) | % Agreement | % Agreement | ||
| Normal Scan | 15 (28) | 46 (87) | 0.62 (0.38,0.87) | 23 (85) | 23 (89) |
| Acute Ischemic Stroke | 9 (17) | 41 (77) | 0.32 (0.02,0.62) | 22 (81) | 19 (73) |
| Chronic Stroke | 24 (45) | 39 (74) | 0.49 (0.27,0.71) | 17 (63) | 22 (85) |
| Edema | 3 (6) | 41 (77) | - | 21(78) | 20 (77) |
| Tumor | 1 (2) | 52 (98) | - | 26 (96) | 26 (100) |
| Hyperdense Artery | 1 (2) | 49 (93) | - | 25 (93) | 24 (92) |
| Contraindication to Thrombolysis | 4 (8) | 48 (91) | - | 24 (89) | 24 (92) |
*
Reflects the presence of the feature observed by the Central Read
When disease prevalence is very high or very low, the κ values are decreased relative to the percentage of agreement. The presentation notes when this might affect interpretation and κ values are included only for the overall sample.