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Table 2

Univariate analysis of potential influencing factors for UR

VariablesNon-URURP-value
Group (n, %)Group (n, %)
Gender0.1786
 Male186 (52.4)41 (62.1)
 Female169 (47.6)25 (37.9)
Age0.7737
 < 60111 (31.3)22 (33.3)
 ≥ 60244 (68.7)44 (66.7)
Smoking0.6661
 No318 (89.6)58 (87.9)
 Yes37 (10.4)8 (12.1)
Alcohol0.6232
 No328 (92.4)60 (90.9)
 Yes27 (7.6)6 (9.1)
BMI (kg/m2)0.5823
 ≤ 25215 (60.6)43 (65.2)
 > 25140 (39.4)23 (34.8)
Hypertension0.0367*
 No262 (73.8)40 (60.6)
 Yes93 (26.2)26 (39.4)
Diabetes0.0128*
 No318 (89.6)51 (77.3)
 Yes37 (10.4)15 (22.7)
Preoperative anemia
 No292 (82.3)54 (81.8) > 0.9999
 Yes63 (17.7)12 (18.2)
Tumor size0.6821
 T1–T231357
 T3–T4429
Cervical node metastasis0.2457
 N0296 (83.4)50 (75.8)
 N135 (9.6)11 (16.7)
 N224(7.0)5 (7.5)
Type of reconstruction0.0002*
 Local flap283 (79.7)37 (56.1)
 Pedicled flap38 (10.7)17 (25.8)
 Free flap34 (9.6)12 (18.1)
Cancer subsites0.0390*
 Oral cavity30461
 Oropharynx94
 Larynx70
 Salivary Gland351

*P < 0.05

UR, unplanned reoperation; BMI, body mass index

  NODES
INTERN 1