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. 2016 Aug 30;8(10):721–729. doi: 10.14740/jocmr2545w

Figure 2.

Figure 2

Meta-analysis of the association between oral HPV infection and sexual behavior, smoking and drinking. (A) Forest plot of overall oral HPV infection and oral sex. Meta-analysis using a fixed effects model demonstrated that oral sex was significantly correlated with oral HPV infection (P < 0.0001). *Gender: M: male; F: female. (B) Forest plot of overall HPV infection and smoking. Meta-analysis using a random effects model demonstrated that smoking status was significantly correlated with oral HPV infection (P = 0.002). *Gender: M: male; F: female.