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Table 1: Characteristics of participants included in image analysis
Characteristic All GA (n = 114) GA <25 Weeks (n = 56) GA ≥25 Weeks (n = 58)
GA at fetal MR imaging (range)  (median) (IQR) (wk) 19.00–39.43 (25.9 [21.9–32.3]) 19.00–24.43 (21.8 [21.0–23.1]) 25.86–39.43 (32.2 [29.1–34.1])
Maternal age at fetal MR imaging  (range) (median) (IQR) (yr) 16.00–41.00 (31.0 [28.0–34.0]) 16.00–41.00 (31.0 [28.8–35.0]) 17.00–41.00 (31.0 [27.2–34.0])
Brain region (No.) (%) 
 Ventriculomegaly 39 (34.2%) 20 (35.7%) 19 (32.8%)
  Mild 23 (21.9%) 14 (25.0%) 9 (15.5%)
  Moderate 7 (4.4%) 4 (3.6%) 3 (5.1%)
  Severe 9 (7.9%) 2 (3.6%) 7 (12.1%)
 Posterior fossa 26 (22.8%) 12 (21.4%) 14 (24.1%)
 Corpus callosum 13 (11.4%) 3 (5.4%) 10 (17.2%)
 Sulcation/migration 15 (13.2%) 9 (16.1%) 6 (10.3%)
 Normal brain 15 (13.2%) 11 (19.6%) 4 (6.9%)
 Space-occupying lesion 4 (3.5%) 1 (1.8%) 3 (5.2%)
 Vascular anomaly 1 (0.9%) 0 (0.0%) 1 (1.7%)
 Hemorrhage 1 (0.9%) 0 (0.0%) 1 (1.7%)
Note:—IQR indicates interquartile range.