Table 4.

Comparison of detection rates of various thyroid nodules by different detection methods (n, %).

Testing method	Type IV	Type V
TAP detection	352 (88.00)	48 (12.00)
CEA detection	341 (85.25)	59 (14.75)
TAP + CEA detection	389 (97.25)ab	11 (2.75)ab
F	35.161	39.568
P	0.001	0.001

Note: compared with TAP test, ^aP < 0.05; compared with CEA test, ^bP < 0.05.