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Table 1 Characteristics of patients with oral SCC (n = 358)

From: Clinical characteristics, treatment methods and prognoses of patients with oral squamous cell carcinoma in Japanese population: a single institution retrospective cohort study

Sex, male, n (%)

207 (57.8)

Age, mean (SD) y

66.1 (14.3)

Age group, n (%)

 < 85 y

332 (92.7)

 ≥ 85 y

26 (7.3)

Primary site, n(%)

 Tongue

177 (49.4)

 Lower gingiva

71 (19.8)

 Upper gingiva

47 (13.1)

 Buccal mucosa

31 (8.7)

 Oral floor

22 (6.1)

 Lip

4 (1.1)

 Palate

6 (1.7)

T stage, n(%)

 Tis

15 (4.2)

 T1

49 (13.7)

 T2

88 (24.6)

 T3

75 (20.9)

 T4a

123 (34.4)

 T4b

8 (2.2)

N stage, n(%)

 N0

257 (71.8)

 N1

31 (8.7)

 N2b

33 (9.2)

 N2c

11 (3.1)

 N3b

26 (7.3)

M stage, n(%)

 M0

357 (99.7)

 M1

1 (0.3)

Stage, n(%)

 Stage 0

21 (5.9)

 Stage 1

46 (12.1)

 Stage 2

74 (20.7)

 Stage 3

69 (19.3)

 Stage 4a

116 (32.4)

 Stage 4b

31 (8.7)

 Stage 4c

6 (0.3)

Treatment, n(%)

Operative treatment

314 (87.7)

  Surgery only

225 (71.7)

  Surgery and postoperative chemotherapy

52 (16.6)

  Surgery and postoperative radiation

6 (1.9)

  Surgery and postoperative chemoradiation

31 (9.9)

Non-operative treatment

44 (12.3)

  Chemotherapy

3 (6.8)

  Radiation

13 (29.5)

  Chemoradiation

28 (63.6)