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Table 3: Comparison of patients with and without brain stem SS
Brain Stem SS Absent (n = 15) Brain Stem SS Present (n = 73) P
Gestational age at birth (wk) 28.6 ± 2.9 27.3 ± 2.9 .11
Sex (% male) 53.3 60.3 .62
Birth weight (g) 1299.5 ± 830 1071.7 ± 407.4 .11
GM-IVH grade I (0) III (2) <.001
Total ventricular HV on HUS (mm³) 91.6 (96.3) 935.1 (2978.8) <.001
Cerebellar hematoma (%) 20 35.6 .24
Cerebellar HV (mm³) 0 (0) 0 (7.9) .12
CV hematoma + (%) 0 19.2 .12
CV HV (mm³) 0 (0) 0 (0) .07
Cerebellar SS + (%) 0 42.5 .001
Lateral ventricle SSD (mm) 0 (0–1) 0.9 (0–3.3) <.001
Third ventricle SSD (mm) 0 (0–0) 0 (0–2.2) <.001
Fourth ventricle SSD (mm) 0 (0–0) 0.4 (0–2.2) <.001
CV SS + (%) 0 72.6 <.001
CN VII/VIII SS + (%) 0 57.5 <.001
CV SS depth (mm) 0 (0–0) 0.4 (0–2.8) <.001
Cerebellar SS depth (mm) 0 (0–0) 0 (0–2.5) .002
Note:—CV indicates cerebellar vermis; GM-IVH, Germinal matrix intraventricular hemorrhage; HV, hematoma volume; SS, superficial siderosis; CN, cranial nerve; +, positive, pathology found; SSD, superficial siderosis depth.
a Numeric variables are presented as mean ± SD or median (minimum-maximum) where appropriate.