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Impact evaluations
Validation of hearing screening procedures in Ecuadorian schools

Validation of hearing screening procedures in Ecuadorian schools

3ie Impact Evaluation Report 26

Karen Muñoz, Karl White, Catherine Callow-Heusser and Eduardo Ortiz

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Approximately 90 per cent of children with hearing loss are found in developing countries. If it is not detected early in life, children who are deaf or hard of hearing lag behind their peers in social and cognitive development as well as in the learning of languages.

In this impact evaluation in Ecuador, Karen Muñoz, Karl White, Catherine Callow-Heusser and Eduardo Ortiz assess the effectiveness of the teacher-administered hearing screening questionnaire Tamizaje Auditivo Escolar in public schools. They do this by comparing the results of the questionnaire against what is considered the international gold standard for hearing screening: pure tone audiological testing. 

The study finds that the Tamizaje Auditivo Escolar programme fails to identify the majority of children with permanent hearing loss. The authors recommend that if the programme continues, significant systematic improvements need to be made in teacher training, protocol adherence, reducing follow up attrition, and expanding access to diagnostic services.

Creating informed demand and impacts through innovative and cost-effective extension

Creating informed demand and impacts through innovative and cost-effective extension

Impact evaluation 3ie 2025  
The authors of this report summarize findings by using a randomized extensive treatment on clients’ understanding of index-based livestock insurance and its impacts.

Economic and empowerment impacts of millet processing and value-addition enterprises by women SHGs in tribal areas of Odisha, India (E²IMPART)

Economic and empowerment impacts of millet processing and value-addition enterprises by women SHGs in tribal areas of Odisha, India (E²IMPART)

Impact evaluation 3ie 2025  
The authors of this report present the findings on the economic and empowerment impacts of millet processing and value-addition enterprises by women SHGs in tribal areas of Odisha, India.

KhetScore: Impacts of using digital technologies to unlock credit and insurance for marginal farmers in Odisha

KhetScore: Impacts of using digital technologies to unlock credit and insurance for marginal farmers in Odisha

Impact evaluation 3ie 2025  
This report describes the findings of an impact evaluation of KhetScore, an innovative tool that employs digital technologies to unlock credit and insurance for small and marginal farmers in the state of Odisha, India.

Picture-based crop insurance: A randomized controlled trial evaluating the impacts of using smartphone camera data for claims verification in India

Picture-based crop insurance: A randomized controlled trial evaluating the impacts of using smartphone camera data for claims verification in India

Impact evaluation 3ie 2025  
The authors of this report summarize the findings from an impact evaluation of a crop insurance scheme called picture-based crop insurance in the state of Haryana, India.

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The effects of providing paid formal work and training on women’s empowerment: Evidence from weavers’ collectives in India

Impact evaluation 3ie 2025  
This report presents the results of a process evaluation of interventions aimed at weaver communities in Andhra Pradesh and Telangana implemented by the Chitrika Foundation.

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  • DOI : 10.23846/pw2007ec

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