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  5. Thou shalt be given... but how? A replication study of a randomized expe...
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Replication papers
3ie Replication Paper 17

Thou shalt be given... but how? A replication study of a randomized experiment on food assistance in northern Ecuador

3ie Replication Paper 17

Stefan K Lhachimi and Till Seuring

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Lhachimi and Seuring re-examine the results of a cluster-randomized evaluation carried out by Melissa Hidrobo and colleagues in 2013 in two provinces in northern Ecuador. The original study investigated the effectiveness of three modes of food assistance—cash, food and vouchers—aimed at improving nutritional outcomes. They found that all three modes improved the quantity and quality of food consumption to a similar extent, but with some exceptions. They also carried out a cost-effectiveness analysis, which indicated that direct food provision was the least cost-effective way to improve nutritional outcomes, while cash and vouchers were equally cost-effective.

The replication authors are able to confirm the original results, using both push-button and pure replications. The measurement and estimation analysis investigated potential contamination of post-intervention preferences for treatment modes in regional units where more than one mode was tested. While some differences in preferences were found in units with more than one treatment mode, the evidence is not conclusive. Differential treatment effects between provinces were also investigated and some evidence was found that for some outcomes, intervention effects may vary in magnitude by province. The theory of change analysis investigates the uncertainty around the original cost-effectiveness analysis and suggests that further research could be important to answer the question of whether cash or vouchers are more cost-effective.

Treatment as Prevention: A replication study of a universal test and treatment cluster-randomized trial in Zambia and South Africa

Treatment as Prevention: A replication study of a universal test and treatment cluster-randomized trial in Zambia and South Africa

Replication paper 3ie 2022  
The authors of this paper replicated a landmark study by Hayes and colleagues (2019) on the HPTN 071 (PoPART) trial, which examined if a universal test and treatment program, along with a combination prevention intervention, could reduce HIV incidence in Zambia and South Africa. 

Treatment as prevention: A replication study on a universal test and treat cluster-randomized trial in South Africa from 2012–2016

Treatment as prevention: A replication study on a universal test and treat cluster-randomized trial in South Africa from 2012–2016

Replication paper 3ie 2022  

Authors of this paper replicated a landmark study by Iwuji and colleagues (2018) who examined the use of treatment as prevention (TaSP) trials for HIV-positive individuals in rural South Africa.

Treatment as prevention: a replication study on early antiretroviral therapy initiation and HIV-1 transmission

Treatment as prevention: a replication study on early antiretroviral therapy initiation and HIV-1 transmission

Replication paper 3ie 2020  
Eric Djimeu and Eleanor G Dickens conduct a replication of the HPTN 052 study by Cohen and colleagues that evaluates the impact of early initiation of antiretroviral therapy on rates of sexual transmission of HIV-1.

Biometric Smartcards and payment disbursement: a replication study of a state capacity-building experiment in India

Biometric Smartcards and payment disbursement: a replication study of a state capacity-building experiment in India

Replication paper 3ie 2019  
The National Rural Employment Guarantee Scheme and Social Security Pension are two of the largest employment programmes in Andhra Pradesh. Muralidharan and colleagues (2016) investigated the impacts of biometrically-authenticated payment infrastructure (Smartcards) on beneficiaries of the two employment programmes.

RPS22

Risk sharing and transaction costs: a replication study of evidence from Kenya’s mobile money revolution

Replication paper 3ie 2019  
This replication study starts with the twin strategies of push-button and pure replications of the original study. It then followed this up with various consistency and robustness checks, such as propensity score matching and the Tobit model specification.

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  • DOI : 10.23846/RPS0017

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