Table 2

Cost (USD) of household contact screening for passive, enhanced and active contact investigation activities (upper panel), and cumulative costs per intervention arm (lower panel)

Intervention activities
Cost categories
Passive contact investigation N=231 (%)Enhanced contact investigation N=300 (%)Active contact investigation N=300 (%)
Recurrent costs:
 Clinic rental and maintenance3492 (33)
 Personnel5354 (50)3835 (42)7348 (57)
 Diagnostic tests1478 (14)2192 (24)2374 (18)
 Supervision and monitoring116 (1)195 (2)39 (0)
 Communication58 (1)204 (2)204 (2)
 Training72 (1)72 (1)70 (1)
 Stationary88 (1)22 (0)24 (0)
 Subtotal recurrent costs10 659652010 096
Capital costs:
 Equipment407 (4)407 (3)
 Data collection system and maintenance2236 (24)2422 (19)
 Subtotal capital costs24632829
Annuitised capital costs (3% discount rate)24192589
Total costs per activity10 659893812 685
Total costs per activity per index patient463042
Intervention armPassivePassive +enhancedPassive +enhanced + active
Total cumulated costs per index patient per arm for household contacts evaluated for TB4676118
No of contacts diagnosed with TB21123176