Table 1

Modelling inputs, assumptions and ranges for passive, enhanced and active contact investigation (CI)

InterventionsTotal cost
(US$)
Index patient with TBTotal contacts diagnosed with TB
(lower and upper limit)
Cost per index TB patient family screened
(US$)
Probability of finding a patient with TB per household screened (lower and upper limit)
Passive CIUS$10 65923121 (17–25)46 (37-55)0.09 (0.07–0.10)
Passive +enhanced CIUS$19 597300102 (82–122)76 (61–91)0.34 (0.27–0.40)
Passive +enhanced + active CIUS$32 282300155 (124–186)118 (94–142)0.52 (0.41–0.62)
  • TB, tuberculosis.