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    We are a mission-driven non-profit organization dedicated to using evidence to transform people’s lives. We collaborate with governments, foundations, NGOs, development and research organizations across the globe.

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  • What we offer

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    We support governments and development partners to generate and use rigorous evidence that informs better policies, programs and investments. Our work spans the full decision-making cycle, helping identify what works, why it works, and how to improve outcomes.

    Explore What we offer
    • Theory of change development
    • Impact evaluation
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    • Impact evaluations scoping and design
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  • Our work

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    Our diverse evidence to policy portfolio spans all major development sectors and regions and represents the scale and depth of 3ie’s global programs and initiatives.

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  • Evidence Hub

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  5. Fiscal policies for healthy diets: Can taxes and subsidies change what y...
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Systematic review
Fiscal policies for healthy diets: Can taxes and subsidies change what you buy?

Fiscal policies for healthy diets: Can taxes and subsidies change what you buy?

Systematic Review brief, 2022

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While several countries have implemented tax and subsidy policies to support healthy diets, systematic evidence of their impacts is limited, especially in low-and middle-income countries. The authors of this brief summarize the findings of a systematic review on the effects of fiscal policies on diet quality and health.

Designing effective land management programmes for both people and the environment

Designing effective land management programmes for both people and the environment

Systematic review Brief 3ie 2025  
The brief presents key learnings from a systematic review of land management programmes on environmental and human well-being outcomes in low and middle-income countries.

Effects of El Niño and the positive Indian Ocean Dipole (+IOD) on health, food security, economics and conflicts in low- and middle-income countries in the Indo-Pacific: A systematic review

Effects of El Niño and the positive Indian Ocean Dipole (+IOD) on health, food security, economics and conflicts in low- and middle-income countries in the Indo-Pacific: A systematic review

Systematic review Brief 3ie 2025  
The authors of this brief summarize the evidence of the effects of El Niño and the positive Indian Ocean Dipole on health, economics, conflict, migration, and food security across low- and middle-income countries in the Indo-Pacific region.

Do market access interventions benefit smallholder farms?

Do market access interventions benefit smallholder farms?

Systematic review Brief 3ie 2024  
The authors of this brief summarize findings of a systematic review on the effects of five types of market access interventions on agriculture, socioeconomic, food security and nutrition outcomes in low- and middle- income countries.

Can vocational training and apprenticeships programs change migration intentions and behavior?

Can vocational training and apprenticeships programs change migration intentions and behavior?

Systematic review Brief 3ie 2023  
Irregular migration harms many people worldwide, and millions of dollars are invested globally each year to address the root causes. The authors of this brief summarize the findings of a systematic review on the effects of classroom-based and on-the-job skills training interventions on migration-related outcomes.

What works to strengthen women’s empowerment and gender equality in fragile and conflict-affected situations?

What works to strengthen women’s empowerment and gender equality in fragile and conflict-affected situations?

Systematic review Brief 3ie 2021  
This systematic review brief summarizes the findings of the synthesis of evidence on gender-specific or gender-transformative interventions in fragile and conflict-affected states. The finding are expected to inform policy and practice decisions within the field of transition aid, particularly, as it relates to gender focused programming.

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  • DOI : 10.23846/B/SR/202205

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