Modelling the impact of social protection on tuberculosis: the S-PROTECT project

Abstract Background Tackling the social determinants of Tuberculosis (TB) through social protection is a key element of the post-2015 End TB Strategy. However, evidence informing policies are still scarce. Mathematical modelling has the potential to contribute to fill this knowledge gap, but existin...

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Main Authors: D. Boccia, W. Rudgard, S. Shrestha, K. Lönnroth, P. Eckhoff, J. Golub, M. Sanchez, E. Maciel, D. Rasella, P. Shete, D. Pedrazzoli, R. Houben, S. Chang, D. Dowdy
Format: Article
Language:English
Published: BMC 2018-06-01
Series:BMC Public Health
Subjects:
Online Access:http://link.springer.com/article/10.1186/s12889-018-5539-x
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author D. Boccia
W. Rudgard
S. Shrestha
K. Lönnroth
P. Eckhoff
J. Golub
M. Sanchez
E. Maciel
D. Rasella
P. Shete
D. Pedrazzoli
R. Houben
S. Chang
D. Dowdy
author_facet D. Boccia
W. Rudgard
S. Shrestha
K. Lönnroth
P. Eckhoff
J. Golub
M. Sanchez
E. Maciel
D. Rasella
P. Shete
D. Pedrazzoli
R. Houben
S. Chang
D. Dowdy
author_sort D. Boccia
collection DOAJ
description Abstract Background Tackling the social determinants of Tuberculosis (TB) through social protection is a key element of the post-2015 End TB Strategy. However, evidence informing policies are still scarce. Mathematical modelling has the potential to contribute to fill this knowledge gap, but existing models are inadequate. The S-PROTECT consortium aimed to develop an innovative mathematical modelling approach to better understand the role of social protection to improve TB care, prevention and control. Methods S-PROTECT used a three-steps approach: 1) the development of a conceptual framework; 2) the extraction from this framework of three high-priority mechanistic pathways amenable for modelling; 3) the development of a revised version of a standard TB transmission model able to capture the structure of these pathways. As a test case we used the Bolsa Familia Programme (BFP), the Brazilian conditional cash transfer scheme. Results Assessing one of these pathways, we estimated that BFP can reduce TB prevalence by 4% by improving households income and thus their nutritional status. When looking at the direct impact via malnutrition (not income mediated) the impact was 33%. This variation was due to limited data availability, uncertainties on data transformation and the pathway approach taken. These results are preliminary and only aim to serve as illustrative example of the methodological challenges encountered in this first modelling attempt, nonetheless they suggest the potential added value of integrating TB standard of care with social protection strategies. Conclusions Results are to be confirmed with further analysis. However, by developing a generalizable modelling framework, S-PROTECT proved that the modelling of social protection is complex, but doable and allowed to draw the research road map for the future in this field.
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spelling doaj.art-a6db9dbca6d947e39b7ce7b4c504136b2022-12-22T01:59:32ZengBMCBMC Public Health1471-24582018-06-011811910.1186/s12889-018-5539-xModelling the impact of social protection on tuberculosis: the S-PROTECT projectD. Boccia0W. Rudgard1S. Shrestha2K. Lönnroth3P. Eckhoff4J. Golub5M. Sanchez6E. Maciel7D. Rasella8P. Shete9D. Pedrazzoli10R. Houben11S. Chang12D. Dowdy13Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical MedicineFaculty of Epidemiology and Population Health, London School of Hygiene and Tropical MedicineDepartment of Epidemiology, Johns Hopkins Bloomberg School of Public HealthDepartment of Public Health Sciences, Karolinska InstitutetInstitute for Disease ModelingDepartment of Medicine, Epidemiology & International Health, Johns Hopkins Bloomberg School of Public HealthFederal University of BrasiliaFederal University of Espírito SantoOswaldo Cruz Foundation (FIOCRUZ)Global Tuberculosis Programme, World Health OrganizationFaculty of Epidemiology and Population Health, London School of Hygiene and Tropical MedicineTB Modelling Group, TB Centre and CMMID, London School of Hygiene and Tropical Medicine, Faculty of Epidemiology and Population HealthInstitute for Disease ModelingDepartment of Epidemiology, Johns Hopkins Bloomberg School of Public HealthAbstract Background Tackling the social determinants of Tuberculosis (TB) through social protection is a key element of the post-2015 End TB Strategy. However, evidence informing policies are still scarce. Mathematical modelling has the potential to contribute to fill this knowledge gap, but existing models are inadequate. The S-PROTECT consortium aimed to develop an innovative mathematical modelling approach to better understand the role of social protection to improve TB care, prevention and control. Methods S-PROTECT used a three-steps approach: 1) the development of a conceptual framework; 2) the extraction from this framework of three high-priority mechanistic pathways amenable for modelling; 3) the development of a revised version of a standard TB transmission model able to capture the structure of these pathways. As a test case we used the Bolsa Familia Programme (BFP), the Brazilian conditional cash transfer scheme. Results Assessing one of these pathways, we estimated that BFP can reduce TB prevalence by 4% by improving households income and thus their nutritional status. When looking at the direct impact via malnutrition (not income mediated) the impact was 33%. This variation was due to limited data availability, uncertainties on data transformation and the pathway approach taken. These results are preliminary and only aim to serve as illustrative example of the methodological challenges encountered in this first modelling attempt, nonetheless they suggest the potential added value of integrating TB standard of care with social protection strategies. Conclusions Results are to be confirmed with further analysis. However, by developing a generalizable modelling framework, S-PROTECT proved that the modelling of social protection is complex, but doable and allowed to draw the research road map for the future in this field.http://link.springer.com/article/10.1186/s12889-018-5539-xEvaluationCash transfersTuberculosisControlBrazil
spellingShingle D. Boccia
W. Rudgard
S. Shrestha
K. Lönnroth
P. Eckhoff
J. Golub
M. Sanchez
E. Maciel
D. Rasella
P. Shete
D. Pedrazzoli
R. Houben
S. Chang
D. Dowdy
Modelling the impact of social protection on tuberculosis: the S-PROTECT project
BMC Public Health
Evaluation
Cash transfers
Tuberculosis
Control
Brazil
title Modelling the impact of social protection on tuberculosis: the S-PROTECT project
title_full Modelling the impact of social protection on tuberculosis: the S-PROTECT project
title_fullStr Modelling the impact of social protection on tuberculosis: the S-PROTECT project
title_full_unstemmed Modelling the impact of social protection on tuberculosis: the S-PROTECT project
title_short Modelling the impact of social protection on tuberculosis: the S-PROTECT project
title_sort modelling the impact of social protection on tuberculosis the s protect project
topic Evaluation
Cash transfers
Tuberculosis
Control
Brazil
url http://link.springer.com/article/10.1186/s12889-018-5539-x
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