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. 2021 Jun 17;16(6):e0253418. doi: 10.1371/journal.pone.0253418

Table 2. Data from the questionnaire related to smoking, alcohol consumption and sexual behavior.

Variables p16 P-value
Negative Positive
n (%) n (%)
Alcoholb
    Never drank 2 2.7% 8 16.0% 0.015*
    Ex-drinker 46 61.3% 22 44.0%
    Current drinker 27 36.0% 20 40.0%%
Smoking a
    Never smoked 5 6.7% 16 32.0% 0.001*
    Ex-smoker 34 45.3% 18 36.0%
    Current smoker 36 48.0% 16 32.0%
Number of sexual partners throughout lifea
    None 0 0.0% 0 0.00% 0.362
    1 to 3 12 16.0% 10 20.0%
    4 to 10 27 36.0% 12 24.0%
    >10 36 48.0% 28 56.0%
Number of partners with whom the patient practised active oral sex throughout lifeb
    None 37 50.7% 15 30.0% 0.126
    1 to 3 27 37.0% 24 48.0%
    4 to 10 4 5.5% 5 10.0%
    >10 5 6.8 6 12.0%
Number of partners with whom the patient practised passive oral sex throughout life
    None 29 39.2% 9 18.0% 0.55
    1 to 3 29 39.2% 22 44.0%
    4 to 10 8 10.8 11 22.0%
    >10 8 10.8 8 16.0%

ª Analysis by the chi-squared test expressed as absolute (n) and relative (%) frequency

b Analysis by Fisher’s exact test expressed as absolute (n) and relative (%) frequency

* Statistically significant difference