Skip to main content

Table 4 Potential predictors influencing DFS

From: Patterns of recurrence after selective postoperative radiation therapy for patients with head and neck squamous cell carcinoma

 

2-y DFS (%)

DFS

yes

no

p value

OC

38.9

59.8

0.067

Necrosis in LN

63.8

49.1

0.245

Bi-lateral ND

50.3

54.7

0.654

NAC

87.5

48.6

0.076

Rec

30.6

59.6

0.062

T4

37.5

56.2

0.21

LN+ ≥2LN+ ≥2

44.9

76.5

0.019*

Extracapsular extention

50.7

62.5

0.177

Positive/close margin

48.5

57.2

0.82

Bilateral RT

42

68.4

0.057

IMRT

69.5

35.7

0.047*

Systemic therapy

38.7

57.1

0.449

OC or rec

33.9

66.4

0.013*

T4 or rec

36.7

65.7

0.012*

OC or T4

37.5

65.1

0.012*

OC or T4 or rec

37.9

72.4

0.006*

  1. DFS disease free survival
  2. OC oral cavity, LN lymph node, ND neck dissection, Rec recurrence. *​A P value of ≤0.05 was considered statistically significant