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Table 1 Summary of the general characteristics of the cohort, classified by P16 status

From: Contralateral nodal failures in oropharyngeal cancers after TORS and unilateral neck management: a retrospective study

Covariate

Full sample

(n = 32)

n (%)

P16 (-)

(n = 9)

n (%)

P16 ( +)

(n = 23)

n (%)

p-value

Gender

   

0.23

Female

9 (28)

4 (44)

5 (22)

 

Male

23 (72)

5 (56)

18 (78)

 

Age

   

0.69

Mean (sd)

58 (9.4)

56.5 (11.9)

58.6 (8.5)

 

Median (Min,Max)

57.9 (37.1,74.1)

55.9 (37.1,74.1)

58 (44.2,71.5)

 

Smoking Hx

   

0.092

Current

17 (53)

7 (78)

10 (43)

 

Ex-smoker

7 (22)

2 (22)

5 (22)

 

Non-smoker

8 (25)

0 (0)

8 (35)

 

Pack years

   

0.019

Mean (sd)

22 (21.5)

36.2 (23.4)

16.4 (18.4)

 

Median (Min,Max)

19 (0,80)

30 (10,80)

10 (0,60)

 

Drinking Hx

   

0.001

Ex-drinker

3 (9)

3 (33)

0 (0)

 

Heavy

6 (19)

4 (44)

2 (9)

 

Light

9 (28)

2 (22)

7 (30)

 

Moderate

2 (6)

0 (0)

2 (9)

 

Non-drinker

11 (34)

0 (0)

11 (48)

 

Unknown

1 (3)

0 (0)

1 (4)

 

cT stage

   

0.035

T0

4

0

4

 

T1

19 (72)

9 (100)

10 (61)

 

T2

9 (28)

0 (0)

9 (39)

 

cN stage

   

0.049

N0

15 (47)

7 (78)

8 (35)

 

N1

17 (53)

2 (22)

15 (65)

 

pT

   

0.77

1

21 (66)

7 (78)

14 (61)

 

2

10 (31)

2 (22)

8 (35)

 

3

1 (3)

0 (0)

1 (4)

 

pN

   

0.43

0

13 (41)

5 (56)

8 (35)

 

1

15 (47)

4 (44)

11 (48)

 

x

4 (12)

0 (0)

4 (17)

 

ENE

   

0.32

No

27 (96)

8 (89)

19 (100)

 

Yes

1 (4)

1 (11)

0 (0)

 

Missing

4

0

4

 

PNI

   

1

No

30 (94)

9 (100)

21 (91)

 

Yes

2 (6)

0 (0)

2 (9)

 

LVI

   

1

No

26 (84)

8 (89)

18 (82)

 

Yes

5 (16)

1 (11)

4 (18)

 

Missing

1

0

1

 

Histology grade

   

0.011

Mod. diff

13 (68)

9 (100)

4 (40)

 

Poorly diff

6 (32)

0 (0)

6 (60)

 

Missing

13

0

13

 

Radiation treatment

   

0.38

No

23 (72)

8 (89)

15 (65)

 

Yes

9 (28)

1 (11)

8 (35)

 

Chemo

   

1

No

31 (97)

9 (100)

22 (96)

 

Yes

1 (3)

0 (0)

1 (4)

 

Site

   

0.65

BOT

6 (19)

1 (11)

5 (22)

 

Tonsil

26 (81)

8 (89)

18 (78)

 

Follow-up (months)

   

0.98

Mean (sd)

21.6 (15.6)

21.6 (14.4)

21.6 (15.6)

 

Median (Min, Max)

15.6 (3.6, 51.6)

26.4 (3.6, 46.8)

13.2 (4.8, 51.6)

 
  1. Statistically significant values are given in bold