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Παρασκευή 2 Δεκεμβρίου 2022

Household versus incentive-based contact investigation for tuberculosis

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Abstract
Background
Household contact investigation for people newly diagnosed with tuberculosis (TB) is poorly implemented, particularly in low- and middle-income countries. Conditional cash incentives may improve uptake.
Methods
We conducted a pragmatic, cluster randomized cross-over trial of two TB contact investigation approaches (household-based and incentive-based) in 28 public primary care clinics in South Africa. Each clinic used one approach for 18 months, followed by a six-month washout period, after which the opposite approach was used. Fourteen clinics were randomized to each approach. In the household-based arm, we conducted TB screening and testing of contacts at the household. In the incentive-based arm, both index patients and up to ten of their close contacts (either within or outside the household). were given small cash incentives for presenting to study clinics for tuberculosis screening. The primary outcome was the number of people with incident tuberculosis who were diagnosed and started on treatment at study clinics.
Results
From July 2016 to January 2020, we randomized 28 clinics to each study arm, and enrolled 782 index tuberculosis patients and 1882 contacts in the household-based arm, and 780 index patients and 1940 contacts in the incentive-based arm. 1,413 individuals started on tuberculosis treatment in the household-based arm, and 1,510 in the incentive-based arm. The adjusted incidence rate ratio of tuberculosis treatment initiation in the incentive versus household-based arm was 1.05 (95% CI:0.97-1.13).
Conclusion
Incentive-based contact investigation for tuberculosis has similar effectiveness to traditional household-based approaches and may be a viable alternative or complementary approach to household-based investigation.
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Medicine by Alexandros G. Sfakianakis,Anapafseos 5 Agios Nikolaos 72100 Crete Greece,00302841026182,00306932607174,alsfakia@gmail.com,

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