Fig 1.
A detailed description of program activities in the different phases of implementation.
Table 1.
Clinic characteristics.
Table 2.
a. Granular unit cost estimates for each phase of implementation of an mHealth-facilitated TB contact investigation program. b. Top-down cost estimates for household contact investigation of tuberculosis in Uganda.
Table 3.
Bottom-up unit cost estimates for each activity and resource category per household TB contact investigated.
Fig 2.
Three-way sensitivity analysis of the cost per TB case detected.
Each graph represents the cost of an mHealth-facilitated TB contact investigation program as the average annual contact positivity rate (number of contacts diagnosed with TB divided by the number of contacts evaluated) varies from 0.0252 to 0.0307 to 0.0361 to 0.0415 among household contacts of TB patients. The y-axis represents the number of clinics covered by the program and the x-axis the total annual contacts at each clinic. The orange hue gradient represents the cost gradient associated with different program coverage capacities, with the darkest shade representing scenarios with the lowest programmatic costs and the lightest shade representing scenarios with the highest programmatic costs. Abbreviations: CHW, Community health worker; RCT, randomized-controlled trial; SMS, short-messaging service; TB, tuberculosis.