TABLE 3.

Number Needed to Screen to Diagnose 1 Case of TB During an Active Case-Finding Intervention

VariableNumber Needed to Screen
Per GroupAggregate Index
Intervention strategy
 Community outreach screening499441
 Health facility screening337
 Screening among HIV-positive people422
 Household contacts of bacteriologically confirmed TB cases38
Age group, years
 0–4596441
 5–141,230
 ≥15302
Sex
 Female548441
 Male356