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Implementation Science
Published in: Implementation Science 1/2014

Open Access 01-12-2014 | Research

The development of effective behaviour change interventions to support the use of malaria rapid diagnostic tests by Tanzanian clinicians

Authors: Clare I R Chandler, Judith Meta, Célia Ponzo, Fortunata Nasuwa, John Kessy, Hilda Mbakilwa, Ane Haaland, Hugh Reyburn

Published in: Implementation Science | Issue 1/2014

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Abstract

Background

Parasitological confirmation is now recommended for all cases of suspected malaria. The roll-out of rapid diagnostic tests (RDTs) is hoped to enable this goal in low resource settings through point of care testing. However, simply making RDTs available has not led to high uptake of the tests or adherence to results by clinicians, with malaria continuing to be overdiagnosed in many settings. We undertook to design an evidence-based intervention package that would be sufficient to support the introduction of RDTs at dispensaries in Tanzania, to be evaluated through the Targeting Artemisinin Combination Therapy (TACT) cluster randomised controlled trial.

Methods

We describe five steps in our intervention design: formative research, review of existing evidence and theory, a workshop to define the intervention approach and content and results of formative research, engagement with behaviour change theory and literature, detailed design of intervention materials and piloting and pretesting of intervention materials. This involved fieldwork with a total of 19 health workers and 212 community members in northeast Tanzania.

Results

The formative research suggested that RDTs were a potential source of conflict in the health worker-patient interaction, but that health workers used various techniques to resolve this, including provision of antimalarial drugs for RDT-negative patients. Our reviews showed that evidence was mixed regarding the effectiveness of different methods and theories to support change in prescribing practice. Our design process is presented, drawing from this collective evidence. We describe the final TACT intervention package (including interactive small group workshops, feedback text messages, motivational text messages and patient information leaflets and posters) in terms of its programme theory and implementation theory.

Conclusions

Our study suggests that evidence-based design of complex interventions is possible. The use of formative research to understand malaria overdiagnosis in context was central to the design of the intervention as well as empirical research to test materials and methods prior to implementation. The TACT interventions may be appropriate for other settings where clinicians face similar challenges with malaria diagnostics.

Trial registration

NCT01292707.
Appendix
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Metadata
Title
The development of effective behaviour change interventions to support the use of malaria rapid diagnostic tests by Tanzanian clinicians
Authors
Clare I R Chandler
Judith Meta
Célia Ponzo
Fortunata Nasuwa
John Kessy
Hilda Mbakilwa
Ane Haaland
Hugh Reyburn
Publication date
01-12-2014
Publisher
BioMed Central
Published in
Implementation Science / Issue 1/2014
Electronic ISSN: 1748-5908
DOI
https://doi.org/10.1186/1748-5908-9-83

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