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Figure 2: Forest plot for overall metaanalysis showing the protective effect of TT genotype of interferongamma +874 T/A polymorphism in tuberculosis through random effects recessive model (TT vs. AT + AA). The horizontal line on the forest plot represents 95% confidence interval and the small vertical lines crossing this horizontal line represents odds ratio. The red bars represent relative weight given to each study and the yellow row illustrates Pooled odds ratio with 95% confidence interval. *Studies with extrapulmonary tuberculosis cases from the same study. 1 = AfroAmerican; 2 and 3 = American population from the same study 
