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Figure 2 | BMC Public Health

Figure 2

From: Target prioritization and strategy selection for active case-finding of pulmonary tuberculosis: a tool to support country-level project planning

Figure 2

Proportional yields. (a) Proportions of prevalent TB cases are denoted as PYss, PYsc, PYxs and PYxc by TB symptoms and smear statuses where the total sum is 100% (TableĀ 1). (b) Proportional yields based on the TB prevalence survey in Viet Nam.7 (c) Based on the TB prevalence survey in Cambodia.4 (d) Calculated by assuming that 40% of prevalent TB cases can be identified through symptomatic screening, 60% of TB cases are smear- positive and they are independently distributed. Note their similarity with (b).

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