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Table 2: Subgroup analysis—patient selection via imaging modalities
Control Group (n = 780) WUS[advanced] (n = 68) DUS[advanced] (n = 63) P Value^{^a} P Value^{^b}
A) CTP or MRI [advanced] 
    mRS 0–2 (3 mo) (No.) (%) 299 (38.3) 32 (47.1) 23 (36.5) .344 NA
    In-hospital mortality (No.) (%) 145 (18.9) 5 (7.5) 8 (12.7) .031 (A) 0.019
(B) .309
(C) .388
    All-cause mortality (3 mo) (No.) (%) 207 (26.5) 11 (16.2) 13 (20.6) .120 NA
    sICH (No.) (%) 42 (5.5) 1 (1.5) 2 (3.3) .380 NA
Control Group (n = 780) WUS[mri] (n = 47) DUS[mri] (n = 52) 
B) MRI [mri] 
    mRS 0–2 (3 mo) (No.) (%) 299 (38.3) 24 (51.1) 20 (38.5) .216 NA
    In-hospital mortality (No.) (%) 145 (18.9) 2 (4.3) 8 (15.4) .024 (A) .009
(B) .713
(C) .204
    All-cause mortality (3 mo) (No.) (%) 207 (26.5) 6 (12.8) 12 (23.1) .093 NA
    sICH (No.) (%) 42 (5.5) 1 (2.2) 2 (4.0) .808 NA
Control [mri] (n = 170) WUS[mri] (n = 47) DUS[mri] (n = 52) 
C) MRI compared with selected controls [mri] 
    mRS 0–2 (3 mo) (No.) (%) 83 (48.8) 24 (51.1) 20 (38.5) .357 NA
    In-hospital mortality (No.) (%) 19 (11.5) 2 (4.3) 8 (15.4) .211 NA
    All-cause mortality (3 mo) (No.) (%) 34 (20.0) 6 (12.8) 12 (23.1) .385 NA
    sICH (No.) (%) 5 (3.0) 1 (2.2) 2 (4.0) .875 NA
Note:—sICH indicates symptomatic intracranial hemorrhage; NA, not applicable.
↵a P value for group comparison.
↵b P value for head-to-head comparison, calculated when the P value for the group comparison was <.05: (A), control group vs WUS; (B), control group vs DUS; (C), WUS vs DUS.