Table 2:

Balanced dataset performance statistics stratified by hemorrhage type and sizea

SizeAccuracyAUCSensitivitySpecificityPPVNPV
ValidTestValidTestValidTestValidTestValidTestValidTest
All ICHs0.9840.9720.9910.9890.9710.9510.9750.9730.9750.9720.9710.952
    Large0.9990.9970.9990.9991.0001.0000.9750.9730.9750.9731.0001.000
    Medium0.9920.9770.9950.9820.9860.9620.9750.9730.9750.9720.9860.962
    Small0.9650.9060.9720.9870.9330.8180.9750.9730.9740.9680.9360.843
    Punctate0.8830.8720.8950.9030.7690.7500.9750.9730.9680.9650.8090.796
IPH0.9920.9970.9960.9990.9861.0000.9750.9730.9750.9730.9861.000
    Large0.9990.9970.9990.9991.0001.0000.9750.9730.9750.9731.0001.000
    Medium0.9990.9970.9990.9991.0001.0000.9750.9730.9750.9731.0001.000
    Small0.9830.9970.9990.9990.9681.0000.9750.9730.9740.9730.9681.000
    Punctate0.8990.9970.9210.9990.8001.0000.9750.9730.9690.9730.8301.000
EDH/SDH0.9860.9700.9890.9740.9750.9470.9750.9730.9750.9720.9750.949
    Large0.9990.9970.9990.9991.0001.0000.9750.9730.9750.9731.0001.000
    Medium0.9800.9630.9830.9710.9620.9330.9750.9730.9740.9710.9630.936
    Small0.9580.8720.9680.8820.9180.7500.9750.9730.9730.9650.9230.796
    Punctate0.832NA0.857NA0.667NA0.9750.9730.963NA0.745NA
SAH0.9700.9490.9720.9530.9420.9050.9750.9730.9740.9710.9440.911
    Large0.9990.9970.9990.9991.0001.0000.9750.9730.9750.9731.0001.000
    Medium0.9990.9970.9990.9991.0001.0000.9750.9730.9750.9731.0001.000
    Small0.9500.9130.9600.9280.9040.8330.9750.9730.9730.9680.9100.854
    Punctate0.8810.8300.8910.8330.7650.6670.9750.9730.9680.9610.8060.745
  • Note:—AUC indicates area under the curve; NA, not applicable; PPV, positive predictive value; NPV, negative predictive value.

  • a Large, medium, small, and punctate hemorrhages were defined as >25, 5–25, 0.01–5.0, and <0.01 mL, respectively.