Table 1 Clinical and pathologic characteristics

Age (year)

48.8±10.0

47.8±7.9

.186

Gender

.477

  Male

30 (81.1%)

32 (74.4%)

  Female

7 (18.9%)

11 (25.6%)

T classification

.910

  T1/T2

33 (89.2%)

38 (88.6%)

  T3/T4

4 (10.8%)

5 (11.6%)

N classification

.927

  N0/N1

22 (59.5%)

26 (60.5%)

  N2/N3

15 (40.5%)

17 (39.5%)

TNM stage

.752

  I/II

27 (72.9%)

30 (69.8%)

  III/IV

10 (27.1%)

13 (30.2%)

Neck dissection

.927

  MRND

15 (40.5%)

17 (39.5.0%)

  SND

22 (59.5%)

26 (60.5%)

Bone resectoin

  Maxillectomy

8 (21.6%)

5 (11.6%)

0.352

  Mandibulectomy

14 (37.8%)

21 (48.8%)

0.565

  Both

5 (13.5%)

6 (13.9%)

0.723

  Median follow up (month)

21

28

0.331

  Operative time (min)

373±45

352±49

.000 ^*

  Blood loss (mL)

241±142

224±112

.563

Surgical margin (n)

  Positive/negative

0/37

0/43

NA

LN retrieved (n)

  Level I

8.81±4.34

9.40±4.80

.817

  Level II

7.24±1.46

7.16±1.61

.572

  Level III

7.38±4.15

8.33±3.52

.273

  Level IV

6.30±2.85

5.84±2.68

.799

  Level V

4.97±3.12

4.84±2.79

.838

  LOHS (days)

12.1±3.6

11.7±5.5

.737

Complications (n, %)

  Salivary fistula

6 (16.2%)

8 (18.6%)

0.779

  Hematoma

4 (10.8%)

5 (11.6%)

0.647

  Chyle leakage

0

2 (4.7%)

0.183

  Seromas

3 (8.1%)

4 (9.3%)

0.381

  Flap failure

3 (8.1%)

3 (6.9%)

0.848

  Wound infection

7 (18.9%)

6 (13.9%)

0.548

  Facial palsy

35 (94.6%)

40 (93.1%)

0.127

Recurrence (n, %)

  Local

4 (10.8%)

6 (13.9%)

0.939

  Regional (Level I)

3 (8.1%)

4 (9.3%)

0.850