Table 1 Associations of adjuvant radiotherapy with clinicopathological characteristics—first group

Characteristics

n = 26

n = 76

Age (years)^a

56.8 ± 10.9 (79.7, 41.0)

53.5 ± 9.0 (84.1, 36.2)

0.25

 Male

22

69

0.38

 Female

4

7

 Buccal mucosa

13

32

0.63

 Mouth floor

3

4

 Gum

4

12

 Hard palate

0

2

 Lip

0

3

 Tongue

6

23

 1

3

6

< 0.001^*

 2

18

18

 3

2

18

 4

3

34

 III

24

40

< 0.001^*

 IV

2

36

 W-D+M-D

24

61

0.15

 P-D

2

15

Tumor depth (mm)^a

7.9 ± 6.9 (30.0, 1.0)

14.1 ± 8.3 (34.0, 2.0)

< 0.001^*

 (−)

24

64

0.30

 (+)

2

12

 (−)

25

71

0.61

 (+)

1

5