Table 2. Correlation between expression of FAP protein and clinicopathological characteristics in OSCC patients (n=84).

Variables	FAP (%)
	n	High expression	Low expression	P-value
Gender
Male	54	24 (44.4%)	30 (55.6%)
Female	30	11 (36.7%)	19 (63.3%)	0.645
Age (years)
≥54	35	15 (42.9%)	20 (57.1%)
<54	49	17 (47.2%)	32 (52.8%)	0.813
Smoking
Yes	38	18 (47.4%)	20 (52.6%)
No	46	16 (33.3%)	30 (66.7%)	0.267
Site
Tongue	38	25 (65.8%)	13 (34.2%)
Buccal mucosa	24	16 (66.7%)	8 (33.3%)
Gingival	18	11 (61.1%)	7 (38.9%)
Other	4	3 (75%)	1 (25%)	0.955
Differentiation
Well differentiated	32	20 (62.5%)	12 (37.5%)
Moderate to poorly differentiated	52	38 (70.4%)	16 (29.6%)	0.483
Alcohol
Yes	29	17 (58.6%)	12 (41.4%)
No	55	39 (70.9%)	16 (29.1%)	0.331
Recurrence
Yes	19	12 (63.2%)	7 (36.8%)
No	65	38 (58.5%)	27 (41.5%)	0.795
T classification
T1+T2	48	21 (43.8%)	27 (56.2%)
T3+T4	26	19 (73.1%)	7 (26.9%)	0.027
N classification
N0+N1	51	23 (45.1%)	28 (54.9%)
N2+N3	33	24 (72.7%)	9 (27.3%)	0.015
Distant metastasis
M1	6	5 (83.3%)	1 (16.7%)
M0	78	38 (55.9%)	30 (44.1%)	0.391
Clinical stage
I–II	50	18 (36.0%)	32 (64.0%)
III–IV	34	22 (64.7%)	12 (35.3%)	0.014

Bold values indicate statistical significance, P<0.05