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Table 2 Associations of adjuvant radiotherapy with clinicopathological characteristics after excluding patients with adverse risk factors—second group

From: The role of postoperative radiotherapy in pN1 oral cavity cancer without extranodal extension

  Adjuvant radiotherapy
(−) (+) p values
Characteristics n = 20 n = 20  
Age (years)a 55.7 ± 11.2 (79.7, 41.0) 56.4 ± 10.2 (72.3, 36.6) 0.56
Sex
 Male 17 19 0.29
 Female 3 1  
Lesion site
 Buccal mucosa 10 8 0.47
 Mouth floor 3 1  
 Gum 2 2  
 Lip 0 2  
 Tongue 5 7  
pT Status
 1 2 3 0.24
 2 15 9  
 3 2 4  
 4 1 4  
Overall pathological stage
 III 19 16 0.15
 IV 1 4  
ASA-PS classification
1 1 0 0.43
2 7 10  
3 12 10  
Neck recurrence
 (−) 19 16 0.15
 (+) 1 4  
Distant metastasis
 (−) 20 19 0.31
 (+) 0 1  
  1. aMean ± SD (maximum, minimum)
  2. ASA-PS American Society of Anesthesiologists physical status classification