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Patients’ characteristics.
| Feature | Subtype | Training Cohort | External Test Cohort | ||
|---|---|---|---|---|---|
| d/d (n = 102) | n/n (n = 57) | d/d (n = 13) | n/n (n = 52) | ||
| Grade | 2 | 66 (64.7%) | 38 (66.7%) | 6 (46.2%) | 22 (42.3%) |
| 3 | 36 (35.3%) | 19 (33.3%) | 7 (53.8%) | 30 (57.7%) | |
| Type | Astrocytoma | 4 (3.9%) | 13 (22.8%) | 0 (0%) | 21 (40.4%) |
| Oligoastrocytoma | 56 (54.9%) | 41 (71.9%) | 0 (0%) | 18 (34.6%) | |
| Oligodendroglioma | 42 (41.2%) | 3 (5.3%) | 13 (100%) | 13 (25%) | |
“d/d” means 1p and 19q are co-deleted, “n/n” means neither 1p nor 19q were deleted.
