Table 3:

Spot sign prediction of hematoma expansion^a

Variable	LmA	HmA	P Value
No. of patients	288	421
Sensitivity (95% CI)	0.45 (0.32–0.59)	0.45 (0.34–0.58)	.973
Specificity (95% CI)	0.84 (0.79–0.89)	0.91 (0.88–0.94)	.015
Positive predictive value (95% CI)	0.40 (0.28–0.53)	0.50 (0.37–0.63)	.267
Negative predictive value (95% CI)	0.87 (0.82–0.91)	0.90 (0.86–0.93)	.367
Accuracy	0.77	0.84	.038

^aSignificant expansion was defined as >30 % or >6 mL increase from baseline hematoma volume.