Table 1 Clinical factors of the training and validation sets
From: A CT-based radiomics nomogram for predicting histologic grade and outcome in chondrosarcoma
Clinical factors | Training set (n = 139) | Validation set (n = 57) | |||
|---|---|---|---|---|---|
Low-grade CS (n = 80) | High-grade CS (n = 59) | P | Low-grade CS (n = 33) | High-grade CS (n = 24) | |
Gender (M/F) | 35/45 | 32/27 | 0.300 | 15/18 | 11/13 |
Age, year | 50.180 ± 1.490 | 55.410 ± 1.920 | 0.010 | 49.820 ± 2.270 | 55.880 ± 3.350 |
Tumor size (mm) | 56.140 ± 3.540 | 74.220 ± 5.110 | <0.001 | 53.850 ± 7.130 | 72.190 ± 9.870 |
Tumor location (long bone/non-long bone) | 54/26 | 37/22 | 0.340 | 21/12 | 14/10 |
Tumor type (central/peripheral) | 68/12 | 54/5 | 0.640 | 23/10 | 16/8 |
Depth of endosteal scalloping (Deep/Not deep) | 33/47 | 46/13 | <0.001 | 14/19 | 17/7 |
Entrapped fat (Yes/No) | 6/74 | 1/58 | 0.090 | 2/31 | 0/24 |
Calcification (Yes/No) | 76/4 | 50/9 | 0.100 | 30/3 | 22/2 |
Bone expansion (Yes/No) | 53/27 | 47/12 | 0.310 | 21/12 | 13/11 |
Cortical destruction (Yes/No) | 74/6 | 55/4 | 0.320 | 26/7 | 22/2 |
Active periostitis (Yes/No) | 66/14 | 57/2 | 0.010 | 28/5 | 23/1 |
Soft tissue mass (Yes/No) | 40/40 | 46/13 | <0.001 | 17/16 | 18/6 |