Fig. 3
From: Role of community-based active case finding in screening tuberculosis in Yunnan province of China
Number needed to screen, incidence rate ratios and 95% confidence intervals for high-risk populations in Yunnan, 2013–2015 NNS: Number needed to screen to detect one tuberculosis case. IRRs: Incidence rate ratio of high-risk population compared to general population in active case finding strategy; CI: confidence intervals. High-risk groups: Elderly, Diabetes mellitus, HIV/AIDS, close contact and history of previous tuberculosis case. *Log transformed with X-axis