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Table 1 HPV DNA detection in 135 head and neck cancer cases from oral cavity (n = 45), nasopharynx (n = 9), oropharynx (n = 19), pharynx unspecified (n = 25) and larynx (n = 37) in Central African Republic, by patients’ characteristics during the period 2009 to 2017

From: Infrequent detection of human papillomavirus infection in head and neck cancers in the Central African Republic: a retrospective study

Variables

Samples tested for HPV

HPV positive sample

N

%

N

% (95% CI)

Gender

 Male

74

54.8

1a

1.35 (0.0–3.9)

 Female

61

45.2

0

0.0 (0.0–0.06)b

Age at diagnosis (years)

 ≤39

27

20.0

0

0.0 (0.0–0.13)b

 40-49

17

12.6

0

0.0 (0.0–0.18)b

 50-59

15

11.1

1

6.67 (0.0–19.3)

 ≥60

76

56.3

0

0.0 (0.0–0.05)b

Period of diagnosis

 2009–2011

32

23.7

0

0.0 (0.0–0.11)b

 2012-2014

64

47.4

1

1.56 (0.0–4.6)

 2015–2017

39

28.9

0

0.0 (0.0–0.09)b

Histological type

 Squamous cell carcinoma

129

95.6

1

0.78 (0.0–2.3)

 Adenocarcinoma

6

4.4

0

0.0 (0.0–0.39)b

  1. aPositivity for HPV-16;
  2. bOne-sided, 97.5% confidence interval
  3. CI Confidence interval