Table 1.

Baseline characteristics

Baseline parameters	Overall n = 62	Medulloblastoma n = 27	Ependymoma n = 20	Pilocytic astrocytoma n = 15	P value
Age (years)	6.73 ± 3.50 (1-15)	7.79 ± 2.96 (2-15)	4.50 ± 2.85 (1-11)	7.60 ± 3.94 (2-15)	0.002*α
Gender					0.019*β
Female	30 (48.4%)	8	11	11
Male	32 (51.6%)	19	9	4
Symptoms					0.201
Headache	33 (53.2%)	14	10	9
Vomiting	13 (21%)	10	2	1
Muscle weakness	6 (9.7%)	1	3	2
Ataxia	3 (4.8%)	1	1	1
Unconsciousness	3 (4.8%)	1	2	0
Epilepsy	1 (1.6%)	0	1	0
Faint	1 (1.6%)	0	0	1
Sensory disorder	1 (1.6%)	0	0	1
Dysmetria	1 (1.6%)	0	1	0
Location					< 0.001*β
Fourth ventricle	41 (66.1%)	21	19	1
Vermis	9 (14.5%)	2	1	6
Right cerebellar hemisphere	7 (11.3%)	2	0	5
Left cerebellar hemisphere	5 (8.1%)	2	0	3
Diameters
RL (mm)	48.82 ± 11.01 (21-83)	47.81 ± 9.70 (21-62)	45.00 ± 9.72 (25-63)	55.73 ± 12.29 (32-83)	0.012*α
AP (mm)	45.69 ± 11.67 (17-67)	44.07 ± 10.70 (20-67)	41.75 ± 10.04 (17-55)	53.83 ± 12.01 (25-67)	0.005*α
FH (mm)	46.63 ± 11.45 (16-68)	44.41 ± 9.98 (17-63)	46.00 ± 13.82 (16-68)	51.47 ± 9.54 (30-65)	0.153
Main structure					< 0.001*β
Solid	37 (59.7%)	22	14	1
Mixed	15 (24.2%)	5	6	4
Cyst	10 (16.1%)	0	0	10
Components					< 0.001*β
Cyst inside tumor	18 (29.0%)	1	2	15
Necrosis	17 (27.4%)	10	7	0
Hemorrhage	8 (12.9%)	6	2	0
Calcification	2 (3.2%)	1	1	0
Peritumoral edema	21 (33.9%)	12	5	4	0.302
Dilated ventricle	55 (88.7%)	25	17	13	0.689
Tumor extension					0.016*β
Magendie foramina	7 (11.3%)	2	5	0
Left Luschka foramina	4 (6.5%)	1	3	0
Right Luschka foramina	3 (4.8%)	0	2	1
Both Luschka foramina	2 (3.2%)	0	2	0
Sylvius aqueduct	2 (3.2%)	1	1	0

^*Statistically significant;

^αAnova test;

^βFisher’s exact test.