Table 2.
Comparison of the biochemical features of patients with and without thyroid cancer
| Characteristics |
Thyroid cancer |
P-valuea | |
|---|---|---|---|
| Present (n = 1,024) | Absent (n = 1,028) | ||
| The level of thyroid-associated hormone |
|
|
|
| fT3, pmol/Lb |
|
|
0.306 |
| <3.67 |
82 (9.2) |
66 (7.3) |
|
| 3.67 to 4.42 |
263 (29.6) |
287 (31.7) |
|
| 4.43 to 4.97 |
284 (32.0) |
266 (29.4) |
|
| 4.98 to 10.43 |
258 (29.1) |
283 (31.3) |
|
| >10.43 |
1 (0.1) |
2 (0.2) |
|
| fT4, pmol/Lb |
|
|
0.337 |
| <7.5 |
11 (1.2) |
5 (0.6) |
|
| 7.5 to 12.83 |
301 (33.9) |
282 (31.2) |
|
| 12.84 to 14.85 |
281 (31.6) |
303 (33.5) |
|
| 14.86 to 21.1 |
283 (31.9) |
299 (33.0) |
|
| >21.1 |
12 (1.4) |
16 (1.8) |
|
| TSH, mIU/Lb |
|
|
<0.001* |
| <0.35 |
58 (6.1) |
84 (8.7) |
|
| 0.35 to 1.17 |
258 (27.1) |
312 (32.4) |
|
| 1.18 to 1.96 |
273 (28.6) |
283 (29.4) |
|
| 1.97 to 4.94 |
317 (33.3) |
247 (25.7) |
|
| >4.94 |
47 (4.9) |
36 (3.7) |
|
| Tg, ng/ml |
|
|
0.180 |
| <4.14 |
131 (34.3) |
107 (36.1) |
|
| 4.14 to 14.46 |
158 (41.4) |
103 (34.8) |
|
| >14.46 |
93 (24.3) |
86 (29.1) |
|
| Antibodyc (n = 748) |
|
|
|
| TgAb |
|
|
<0.001* |
| Negative |
309 (78.4) |
314 (88.7) |
|
| Positive |
85 (21.6) |
40 (11.3) |
|
| TMAb |
|
|
<0.001* |
| Negative |
309 (78.4) |
315 (89.0) |
|
| Positive | 85 (21.6) | 39 (11.0) | |
Results are presented as number (%) of patients. aCalculated using chi-square test; bpatients with free T3 (fT3), fT4, or thyroid-stimulating hormone (TSH) measurements within the normal range were divided into three tertiles of similar size, respectively; conly 748 patients who had information on thyroglobulin antibody (TGAb) and antimicrosomal antibody (TMAb) were included in the analysis; *statistically significant (P <0.05). Tg, thyroglobulin.