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Table 2 Characterization of the case group in relation to the expression of p16 and socio-demographic variables, lifestyle and clinical data. Cancer Hospital of Barretos, January/2013 to October/2015

From: Human papillomavirus is not associated to non-small cell lung cancer: data from a prospective cross-sectional study

Variable Category p16 expression p
Positive Negative
n (*) (%) n (*) (%)
Gender Female 4 (40,0) 13 (21,7) 0,242
Male 6 (60,0) 47 (78,3)
Race Não Branco 3 (30,0) 12 (20,3) 0,679
Branco 7 (70,0) 47 (79,7)
Alcohol intake Yes 8 (80,0) 53 (88,3) 0,607
No 2 (20,0) 7 (11,7)
Smoking habits Yes 5 (50,0) 36 (60,0) 0,731
No 5 (50,0) 24 (40,0)
Histological types Squamous cell carcinoma 6 (60,0) 37 (61,7) 0,999
Adenocarcinoma 4 (40,0) 23 (38,3)
Differentiation Degree Well or Moderate 3 (30,0) 25 (52,1) 0,301
Poor 7 (70,0) 23 (47,9)
T T1 – T2 2 (20,0) 12 (20,7) 0,999
T3 – T4 8 (80,0) 46 (79,3)
N N0 1 (10,0) 10 (17,2) 0,999
N positive 9 (90,0) 48 (82,8)
M M0 4 (40,0) 28 (48,3) 0,739
M1 6 (60,0) 30 (51,7)
Stage I – II 0 (0,0) 6 (10,5) 0,580
III – IV 10 (100,0) 51 (89,5)
Total   10 (100) 60 (100)  
  1. (*) Cases with missing values were excluded from the analysis
  2. n number; TNM staging: a system based on the size and/ or the extension of the primary tumor (T), the number of compromised lymph nodes (N) and the presence of metastasis (M). Fisher’s exact test was used. It was considered statistically significant p < 0.05