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Fig. 4 | Environmental Health and Preventive Medicine

Fig. 4

From: Anemia as a risk factor for tuberculosis: a systematic review and meta-analysis

Fig. 4

Forest plot of case-control and cross-sectional studies; pooled effect size (OR) estimates of anemia for the development of TB. The scale in the x-axis represents OR risk estimate of the studies. The hard line represents the OR value showing no association (OR of 1). The dashed line represents the pooled point estimate of OR of anemia for the TB infection. The black dot at the center of the gray box represents the point OR estimate of each study and the line indicates the 95% confidence interval of the estimates. The gray boxes represent the weight of each study contributing to the pooled OR estimate. The blue diamond represents the 95% confidence interval of the pooled OR estimates. OR odds ratio, CI confidence interval, I-squared shows the heterogeneity of the included studies, p indicates the statistical significance of the heterogeneity, + anemia severity not defined, * mild anemia, & moderate and severe anemia, # moderate anemia, $ severe anemia

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