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Protocol for the Process Evaluation of a Complex, Statewide Intervention to Reduce Salt Intake in Victoria, Australia

Systematic reviews of trials consistently demonstrate that reducing salt intake lowers blood pressure. However, there is limited evidence on how interventions function in the real world to achieve sustained population-wide salt reduction. Process evaluations are crucial for understanding how and why...

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Autores principales: Trieu, Kathy, Jan, Stephen, Woodward, Mark, Grimes, Carley, Bolam, Bruce, Nowson, Caryl, Reimers, Jenny, Davidson, Chelsea, Webster, Jacqui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6115992/
https://www.ncbi.nlm.nih.gov/pubmed/30720790
http://dx.doi.org/10.3390/nu10080998
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author Trieu, Kathy
Jan, Stephen
Woodward, Mark
Grimes, Carley
Bolam, Bruce
Nowson, Caryl
Reimers, Jenny
Davidson, Chelsea
Webster, Jacqui
author_facet Trieu, Kathy
Jan, Stephen
Woodward, Mark
Grimes, Carley
Bolam, Bruce
Nowson, Caryl
Reimers, Jenny
Davidson, Chelsea
Webster, Jacqui
author_sort Trieu, Kathy
collection PubMed
description Systematic reviews of trials consistently demonstrate that reducing salt intake lowers blood pressure. However, there is limited evidence on how interventions function in the real world to achieve sustained population-wide salt reduction. Process evaluations are crucial for understanding how and why an intervention resulted in its observed effect in that setting, particularly for complex interventions. This project presents the detailed protocol for a process evaluation of a statewide strategy to lower salt intake in Victoria, Australia. We describe the pragmatic methods used to collect and analyse data on six process evaluation dimensions: reach, dose or adoption, fidelity, effectiveness, context and cost, informed by Linnan and Steckler’s framework and RE-AIM. Data collection methods include routinely collected administrative data; surveys of processed foods, the population, food industry and organizations; targeted campaign evaluation and semi-structured interviews. Quantitative and qualitative data will be triangulated to provide validation or context for one another. This process evaluation will contribute new knowledge about what components of the intervention are important to salt reduction strategies and how the interventions cause reduced salt intake, to inform the transferability of the program to other Australian states and territories. This protocol can be adapted for other population-based, complex, disease prevention interventions.
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spelling pubmed-61159922018-09-04 Protocol for the Process Evaluation of a Complex, Statewide Intervention to Reduce Salt Intake in Victoria, Australia Trieu, Kathy Jan, Stephen Woodward, Mark Grimes, Carley Bolam, Bruce Nowson, Caryl Reimers, Jenny Davidson, Chelsea Webster, Jacqui Nutrients Protocol Systematic reviews of trials consistently demonstrate that reducing salt intake lowers blood pressure. However, there is limited evidence on how interventions function in the real world to achieve sustained population-wide salt reduction. Process evaluations are crucial for understanding how and why an intervention resulted in its observed effect in that setting, particularly for complex interventions. This project presents the detailed protocol for a process evaluation of a statewide strategy to lower salt intake in Victoria, Australia. We describe the pragmatic methods used to collect and analyse data on six process evaluation dimensions: reach, dose or adoption, fidelity, effectiveness, context and cost, informed by Linnan and Steckler’s framework and RE-AIM. Data collection methods include routinely collected administrative data; surveys of processed foods, the population, food industry and organizations; targeted campaign evaluation and semi-structured interviews. Quantitative and qualitative data will be triangulated to provide validation or context for one another. This process evaluation will contribute new knowledge about what components of the intervention are important to salt reduction strategies and how the interventions cause reduced salt intake, to inform the transferability of the program to other Australian states and territories. This protocol can be adapted for other population-based, complex, disease prevention interventions. MDPI 2018-07-30 /pmc/articles/PMC6115992/ /pubmed/30720790 http://dx.doi.org/10.3390/nu10080998 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Protocol
Trieu, Kathy
Jan, Stephen
Woodward, Mark
Grimes, Carley
Bolam, Bruce
Nowson, Caryl
Reimers, Jenny
Davidson, Chelsea
Webster, Jacqui
Protocol for the Process Evaluation of a Complex, Statewide Intervention to Reduce Salt Intake in Victoria, Australia
title Protocol for the Process Evaluation of a Complex, Statewide Intervention to Reduce Salt Intake in Victoria, Australia
title_full Protocol for the Process Evaluation of a Complex, Statewide Intervention to Reduce Salt Intake in Victoria, Australia
title_fullStr Protocol for the Process Evaluation of a Complex, Statewide Intervention to Reduce Salt Intake in Victoria, Australia
title_full_unstemmed Protocol for the Process Evaluation of a Complex, Statewide Intervention to Reduce Salt Intake in Victoria, Australia
title_short Protocol for the Process Evaluation of a Complex, Statewide Intervention to Reduce Salt Intake in Victoria, Australia
title_sort protocol for the process evaluation of a complex, statewide intervention to reduce salt intake in victoria, australia
topic Protocol
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6115992/
https://www.ncbi.nlm.nih.gov/pubmed/30720790
http://dx.doi.org/10.3390/nu10080998
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