Table 1:

Agreement of the 3 readers overall and with respect to individual features

Readers^a	κ	95% CI
1 and 2	0.45	0.23–.61
1 and 3	0.42	0.18–.62
2 and 3	0.72	0.47–.89
Signs
ICH	0.30	−0.11–.74
Edema	0.54	0.28–.74
Abnormal MRA	0.43	0.17–.68
Serpiginous vessels	0.58	0.32–.80
Venous enhancement	0.29	0.02–.54
Venous ASL signal	0.64	0.40–.85

↵a Reader 1 is a neurologist; readers 2 and 3 are neuroradiologists.