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Table 1 Patients clinical characteristics (n=196)

From: Prediction of high infiltration levels in pituitary adenoma using MRI-based radiomics and machine learning

Characteristic Training set (n=176) Validation set (n=20) Whole set (n=196) P-value
Age (year, mean ± std) 52.43 ± 12.82 48.70 ± 14.05 51.99 ± 12.98 0.224
Gender     0.809
 Male 83 (47.16%) 10 (50.00%) 93 (47.45%)  
 Female 93 (52.84%) 10 (50.00%) 103 (52.55%)  
Knosp grade     0.608
 Grades 0–2 81 (46.02%) 8 (40.00%) 89 (45.41%)  
 Grades 3–4 95 (53.98%) 12 (60.00%) 107 (54.59%)  
Hormone hypersecreting tumors     0.707
 Yes 87 (49.43%) 9 (45.00%) 96 (48.98%)  
 No 89 (50.57%) 11 (55.00%) 100 (51.02%)  
Infiltration     0.419
 High invasion 95 (53.98%) 12 (60%) 107 (60.79%)  
 Not high invasion 81 (46.02%) 8 (40%) 99 (39.21%)  
Ki67 proliferation index     0.103
 < 3% 120 (68.18%) 10 (50.00%) 130 (66.33%)  
 ≥ 3% 56 (31.82%) 10 (50.005) 66 (33.67%)  
  1. std standard deviation. P value < 0.5 represents a significant difference