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Table 2 Clinical and pathologic characteristics (after elimination)

From: Postoperative radiotherapy may not be necessary for locally advanced head and neck squamous cell carcinoma: a case-match multicentre study

  Surgery only (n = 37), n(%) Surgery + adjuvant (n = 37), n(%) P
Age 50.6 ± 11.3 50.3 ± 8.4 0.898
Gender 0.556
 Male 36 35
 Female 1 2
Subsite 0.233
 Tongue 21 22
 Buccal 3 3
 Floor of mouth 10 11
 Gingiva 1 1
 Oropharynx 1 0
 Lip 1 0
pT 0.983
 1 9 9
 2 23 24
 3 4 3
 4 1 1
pN 0.999
 0 2 2
 1 10 10
 2 25 25
Pathological differentiation 0.812
 Well 15 14
 Moderately 22 23
 Poorly 0 0
Perineural invasion 0.485
 Positive 17 20
 Negative 20 17
Treatment
 Surgery only 35
 Surgery + chemotherapy 2
 Surgery + radiotherapy 28
 Surgery + chemoradiotherapy 9
Smoking 0.601
 Yes 26 28
 No 11 9
Alcohol 0.352
 Yes 21 17
 No 16 20