Proportion of Beijing (A), EAI4-VNM (C) isolates and others (B) as functions of age and location (urban in red vs. rural in blue). Anh Thi NguyenVan ChoisyMarc Hung NguyenDuy Hoa Thi TranThanh Lien Thi PhamKim Thao Thi DinhPhuong PhilippeJules Son NguyenThai Ly HoMinh Van TranSang BaƱulsAnne-Laure Anh DangDuc 2012 <p>Empty circles represent raw data (1 and 0 for yes and no), filled dots are the means defined for each age class (represented by vertical dotted bars and labeled on the top of the graph), together with 95% confidence interval (vertical bars). The lines are the logistic model predictions (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0045553#pone-0045553-t005" target="_blank">table 5</a> for the parameter estimates and their significativities) together with 95% CI (shaded area).</p>