Systematic review

These briefs summarise the focus of a review; main findings; and implications for policy, programming and further research.

Latest systematic review briefs

Systematic review

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

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?

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?

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.

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

Systematic review Brief 3ie 2022  
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.

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.

Do aquaculture interventions improve productivity, income, nutrition and women’s empowerment in low- and middle-income countries?

Systematic review Brief 3ie 2021  
This brief is based on a review that synthesizes evidence on the effectiveness of interventions supporting farming of aquatic organisms and aiming to improve productivity, income, nutrition and women's empowerment in low-and middle-income countries.

Effects of access to electricity interventions on socio-economic outcomes in low- and middle-income countries

Systematic review Brief 3ie 2020  
This brief presents the findings of a systematic review on the effectiveness of electricity interventions on socio-economic outcomes for households, firms and communities in low- and middle- income countries.

In fragile situations, which interventions strengthen intergroup social cohesion?

Systematic review Brief 3ie 2020  
This brief summarises the findings and implications of a systematic review that analyses the strategies effective at building intergroup social cohesion in fragile contexts to promote sustainable peace. 

Impacts of financial inclusion in low- and middle-income countries

Systematic review Brief 3ie 2019  
This brief presents the findings of a systematic review of reviews that synthesised 11 systematic reviews or meta analyses on the effects of financial inclusion interventions in low- and middle-income countries.