BMC Cancer

Table 1 Demographic and Clinicopathological Characteristics of Patients With PTC

From: Using a nomogram based on preoperative serum fibrinogen levels to predict recurrence of papillary thyroid carcinoma

	Training set		Testing set		P Value
	Patients		Patients		P Value
Factor	No.	%	No.	%
All patients	414	100	609	100
Age (years)					0.639
≤45	242	58.5	347	57.0
>45	172	41.5	262	43.0
Age (years)					0.079
≤55	357	86.2	500	84.0
>55	57	13.8	109	16.0
Gender					0.196
Female	305	73.7	426	82.1
Male	109	26.3	183	17.9
Postoperative RAI					0.655
Yes	228	55.1	344	56.5
No	186	44.9	265	43.5
Race					0.971
Han	403	97.3	593	97.4
Tibetan	3	0.7	6	1.0
Other†	8	1.9	10	1.6
Smoking					0.603
Never	352	84.5	508	83.4
Quit	17	4.1	23	3.8
Ongoing	45	10.9	78	12.8
Alcohol use					0.027
Never	358	86.0	490	80.5
Quit	3	0.7	14	2.3
Ongoing	53	12.8	105	17.2
BRAF mutation					0.030
Positive	51	12.3	128	21.0
Negative	77	18.6	88	14.4
Unknown	286	68.6	393	64.5
T classification					0.016
T1	160	38.6	197	32.3
T2	11	2.7	13	2.1
T3	188	45.4	294	48.3
T4	55	13.3	105	17.2
N classification					0.605
N0	196	47.3	293	48.1
N1a	156	37.7	197	32.3
N1b	62	15.0	119	19.5
Distant metastasis					0.361
No	410	99.0	599	98.4
Yes	4	1.0	10	1.6
PTC number					0.135
Single	355	85.7	536	88.0
Multiple	59	14.3	73	12.0
Bilateral lobe PTC					0.010
Yes	47	11.4	41	6.7
No	367	88.6	568	93.3

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ISSN: 1471-2407

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