Characteristics |    No. of patients in training group (%) |    No. of patients in test group (%) | ||
---|---|---|---|---|
PTC (n =42) | Benign (n =37) | PTC (n =20) | Benign (n =18) | |
Pathological subtypes | Â | Â | Â | Â |
 PTC | 42 (100) | -- | 20 (100) | -- |
 Nodular goiter | -- | 26 (70.27) | -- | 14 (77.78) |
 Thyroid adenoma | -- | 11 (29.73) | -- | 4 (22.23) |
Gender | Â | Â | Â | Â |
 Male | 12 (28.57) | 9 (24.32) | 3 (15.00) | 2 (11.11) |
 Female | 30 (71.43) | 28 (75.68) | 17 (85.00) | 16 (88.89) |
Age, years | Â | Â | Â | Â |
 Mean | 45.16 | 40.31 | 41.33 | 40.20 |
 SD | 13.17 | 13.01 | 12.79 | 10.45 |
Tumor/nodule size (cm3) | Â | Â | Â | Â |
 ≤ 3 | 32 (76.19) | 18 (48.65) | 14 (70.00) | 7 (38.89) |
 3-5 | 9 (21.43) | 14 (37.84) | 6 (30.00) | 9 (50.00) |
 ≥5 | 1 (2.38) | 5 (13.51) | 0 | 2 (11.11) |
Tumor invasion | Â | Â | Â | Â |
 Yes | 14 (33.33) | -- | 14 (70.00) | -- |
 No | 28 (66.67) | -- | 6 (30.00) | -- |
Lymph node metastasis | Â | Â | Â | Â |
 Yes | 22 (52.38) | -- | 15 (75.00) | -- |
 No | 20 (47.62) | -- | 5 (25.00) | -- |