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Table 2 Clinical characteristics of the selected groups

From: Correlation between egfr expression and accelerated proliferation during radiotherapy of head and neck squamous cell carcinoma

Author

E1

E2

BE

SU

SM

CH

number of patients

209

803

304

148

165

533

Sex %

M

74.2

81.0

72.0

90.0

66.0

79.2

F

25.8

19.0

28.0

10.0

34.0

20.8

Primary site %

Oral Cavity

/

12.0

13.0

50.6

100.0

10.3

Oropharynx

/

52.5

28.0

/

60.4

Hypopharynx

/

12.0

/

/

13.7

Nasopharynx

/

/

3.0

/

/

/

Larynx

100.0

35.5

44.0

49.4

/

15.6

T stage %

T1

6.0

67.0

3.0

26.1

2.0

5.8

T2

37.0

42.0

25.0

27.6

T3

35.0

33.0

33.0

73.9

28.0

37.1

T4

22.0

22.0

35.0

29.3

Tx

/

/

/

/

/

0.2

N stage %

N0

65.0

65.0

63.0

33.8

26.0

21.8

 

N1

35.0

35.0

18.0

66.2

16.0

18.6

 

N2a

15.0

1.0

9.6

 

N2b

39.0

17.8

 

N2c

17.0

19.3

 

N3

4.0

1.0

12.9

  1. Abbreviations: E1 = Eriksen-AO, E2 = Eriksen RO, BE = Bentzen JCO, SU = Suwinski IJROBP, SM = Smid IJROBP, CH = Chung IJROBP.