Table 1.
Basic characteristics of included patients.
| Variables | Group0 (N = 648) N (%) | Group1 (N = 1078) N (%) | Group2 (N = 765) N (%) | P | |
|---|---|---|---|---|---|
| Gender | Male | 182 (28.7) | 265 (24.6) | 198 (25.9) | 0.1704 |
| Female | 452 (71.3) | 813 (75.4) | 567 (74.1) | ||
| Age | Mean ± SD | 43.71 ± 11.96 | 42.23 ± 11.87 | 42.20 ± 11.50 | 0.0233* |
| <55 | 536 (84.5) | 918 (85.2) | 656 (85.8) | 0.8177 | |
| ≥55 | 98 (15.5) | 160 (14.8) | 109 (14.2) | ||
| BMI | Mean ± SD | 23.20 ± 3.31 | 23.27 ± 3.91 | 23.23 ± 3.25 | 0.9329 |
| <24 | 398 (63.3) | 658 (62.0) | 448 (60.1) | 0.4584 | |
| 24 | 231 (36.7) | 403 (38.0) | 298 (39.9) | ||
| Hospitalization (day) | Mean ± SD | 8.41 ± 3.55 | 8.62 ± 3.51 | 8.49 ± 2.59 | 0.4365 |
| Hypertension | No | 562 (88.6) | 975 (90.4) | 697 (91.1) | 0.2827 |
| Yes | 72 (11.4) | 103 (9.6) | 68 (8.9) | ||
| Diabetes | No | 613 (96.7) | 1052 (97.6) | 739 (96.6) | 0.3828 |
| Yes | 21 (3.3) | 26 (2.4) | 26 (3.4) | ||
| Hypothyroidism | No | 619 (97.6) | 1055 (97.9) | 745 (97.4) | 0.7967 |
| Yes | 15 (2.4) | 23 (2.1) | 20 (2.6) | ||
| Grave's disease | No | 614 (96.8) | 1049 (97.3) | 746 (97.5) | 0.7385 |
| Yes | 20 (3.2) | 29 (2.7) | 19 (2.5) | ||
| HD | No | 495 (78.1) | 813 (75.4) | 599 (78.3) | 0.2634 |
| Yes | 139 (21.9) | 265 (24.6) | 166 (21.7) | ||
| NG | No | 261 (41.2) | 472 (43.8) | 347 (45.4) | 0.2859 |
| Yes | 373 (58.8) | 606 (56.2) | 418 (54.6) | ||
| Upper lobe | No | 455 (71.8) | 764 (70.9) | 562 (73.5) | 0.4734 |
| Yes | 179 (28.2) | 314 (29.1) | 203 (26.5) | ||
| Isthmus | No | 588 (92.7) | 994 (92.2) | 706 (92.3) | 0.9168 |
| Yes | 46 (7.3) | 84 (7.8) | 59 (7.7) | ||
| Bilaterality | No | 536 (84.5) | 923 (85.6) | 631 (82.5) | 0.1864 |
| Yes | 98 (15.5) | 155 (14.4) | 134 (17.5) | ||
| Multifocality | No | 477 (75.2) | 809 (75.0) | 553 (72.3) | 0.3294 |
| Yes | 157 (24.8) | 269 (25.0) | 212 (27.7) | ||
| ETE | No | 549 (86.6) | 892 (82.7) | 652 (85.2) | 0.0836 |
| Yes | 85 (13.4) | 186 (17.3) | 113 (14.8) | ||
| Largest tumor size (mm) | Mean ± SD | 13.37 ± 9.15 | 13.65 ± 9.4 | 14.15 ± 9.59 | 0.3026 |
| T stage | Tx | 5 (0.8) | 2 (0.2) | 3 (0.4) | 0.0533 |
| T1a | 276 (43.5) | 457 (42.4) | 315 (41.2) | ||
| T1b | 214 (33.8) | 337 (31.3) | 238 (31.1) | ||
| T2 | 47 (7.4) | 81 (7.5) | 86 (11.2) | ||
| T3a | 5 (0.8) | 14 (1.3) | 10 (1.3) | ||
| T3b | 54 (8.5) | 116 (10.8) | 67 (8.8) | ||
| T4a | 30 (4.7) | 69 (6.4) | 46 (6.0) | ||
| T4b | 3 (0.5) | 2 (0.2) | 0 (0) | ||
| N stage | Nx | 6 (0.9) | 7 (0.6) | 4 (0.5) | 0.0011* |
| N0 | 335 (52.8) | 534 (49.5) | 336 (43.9) | ||
| N1a | 197 (31.1) | 336 (31.2) | 240 (31.4) | ||
| N1b | 96 (15.1) | 201 (18.6) | 185 (24.2) |
HD, Hashimoto's disease; NG, nodular goiter; ETE, extrathyroidal extension; SD, standard deviation;
*
P < 0.05.