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Table 2 Treatment variables of all patients

From: Postoperative radiotherapy with or without concurrent chemotherapy for oral squamous cell carcinoma in patients with three or more minor risk factors: a propensity score matching analysis

Characteristic CCRT group (%) RT group (%) p-value
RT technique
 Other 13 (38.2%) 25 (73.5%) < 0.01*
 IMRT 21 (61.8%) 9 (26.5%)  
RT duration (days)
 ≤ 8 weeks 32 (94.1%) 29 (85.3%) 0.427
 > 8 weeks 2 (5.9%) 5 (24.7%)  
Time between OP & RT
 ≤ 6 weeks 20 (58.8%) 22 (64.7%) 0.803
 > 6 weeks 14 (41.2%) 12 (35.3%)  
RT dose
 < 6600 cGy 20 (58.8%) 25 (73.5%) 0.305
 6600 cGy 14 (41.2%) 9 (26.5%)  
  1. *Significant difference, p < 0.05
  2. Abbreviations: RT radiotherapy, IMRT intensity-modulated radiotherapy, OP operation, CCRT concurrent chemoradiation