Table 2:

Calculation of the SICH score

Parameter	Points
NCCT categorization^a
High probability	2
Indeterminate	1
Low probability	0
Age group
18–45 years	2
46–70 years	1
≥71 years	0
Sex
Female	1
Male	0
Neither known HTN nor impaired coagulation^b
Yes	1
No	0

Note:—The SICH score is calculated by adding the total number of points for a given patient.
a High-probability NCCT: an examination with either 1) enlarged vessels or calcifications along the margins of the ICH or 2) hyperattenuation within a dural venous sinus or cortical vein along the presumed venous drainage path of the ICH. Low-probability NCCT: an examination in which neither 1) nor 2) is present and the ICH is located in the basal ganglia, thalamus, or brain stem. Indeterminate NCCT: an examination that does not meet criteria for a high- or low-probability NCCT.
b Impaired coagulation defined as admission INR >3, aPTT >80 seconds, platelet count <50,000, or daily antiplatelet therapy.