Meta-analysis of the 13 studies included in the 2-stages meta-analysis of the association of HIV positive status with immigration status in TB cases.

<p>(a) Forrest plot: the M-H Overall OR was obtained using a fixed effect meta-analysis; the D-L Overall OR was obtained using a random effect meta-analysis. Studies were listed according to year of data collection and grouped for pre-cART (before 1996) and post-cART (after 1996). Triangles are proportional to the study size, (value of study population size is also given). Diamonds represent overall results. Horizontal lines represent 95% confidence intervals. Year, year of data collection. Id, article reference number. 95%CI, 95% confidence intervals. I², statistic which measures the degree of heterogeneity. Weight (M-H), fixed effect weight, based on the sample size of studies. (b) Funnel Plot: Horizontal axis, ORs; Vertical axis, standard error of the log ORs.