Table 3 Association of HPV infection in paired oral and genital specimens from individual male participants in rural Anyang, 2009–2011.

Analysis	HPV status of external genitalia	HPV status of oral cavity		Total	Crude OR (95% CI)^a	Adjusted OR (95% CI)^b
Analysis	HPV status of external genitalia	Negative	Positive	Total	Crude OR (95% CI)^a	Adjusted OR (95% CI)^b
Overall
	Negative	1746	106	1852	1.0	1.0
	Positive	333	43	376	2.1 (1.5, 3.1)	2.3 (1.6–3.4)
	Total	2079	149	2228
Type-specific^c
	Negative	95247	405	95652	1.0	1.0
	Positive	125	27	152	50.8 (33.1, 77.8)	55.7 (36.1, 86.0)
	Total	95372	432	95804

Abbreviation: HPV, human papillomavirus; OR, odds ratio; CI, confidence interval.
^aCrude ORs and 95% CIs were calculated by univariate logistic regression analyses with generalized estimating equations (GEE).
^bAdjusted ORs and 95% CIs were calculated by multivariate logistic regression analyses with GEE including age, education level, marital status, type of employment, cigarette smoking, alcohol consumption, history of oral disease, number of missing teeth, frequency of washing genitalia before sex, oral sex practices and lifetime number of sexual partners.
^cNumber of observations for type-specific analysis = 43 (total number of types detected among oral and genital specimens) × 2228 (number of individuals).

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