Table 2 Clinical and demographic characteristics of patients in the training and validation sets
Characteristics | Training set | P-value | Validation set | P-value | ||
|---|---|---|---|---|---|---|
Low-malignant group (n = 109) | High-malignant group (n = 199) | Low-malignant group (n = 47) | High-malignant group (n = 85) | |||
Gender | Â | 0.641 | Â | 0.380 | ||
 Male | 60 | 104 | 27 | 42 | ||
 Female | 49 | 95 | 20 | 43 | ||
Age (mean ± SD, years) | 56.9 ± 9.99 | 58.4 ± 10.82 | 0.251 | 57.96 ± 11.20 | 58.8 ± 11.42 | 0.696 |
Symptom (%) | Â | Â | 0.875 | Â | Â | 0.704 |
 + | 70 (64.22%) | 126 (63.32%) | 43 (91.49%) | 76 (89.41%) | ||
 - | 39 (35.78%) | 73 (36.68%) | 4 (8.51%) | 9 (10.59%) | ||
Tumor history (%) | Â | Â | 0.918 | Â | Â | 0.343 |
 + | 13 (11.93%) | 20 (10.05%) | 4 (8.51%) | 11 (12.94%) | ||
 - | 96 (88.03%) | 199 (89.95%) | 43 (91.49%) | 74 (87.06%) | ||
Family history (%) | Â | Â | 0.176 | Â | Â | 0.187 |
 + | 11 (10.09%) | 27 (13.57%) | 3 (6.38%) | 10 (11.76%) | ||
 - | 98 (89.91%) | 172 (86.43%) | 44 (93.62%) | 75 (88.24%) | ||