Evidence gap maps

Our gap maps are thematic collections of existing evidence from impact evaluations and systematic reviews about effects of international development policies and programmes. The reports provide all of the supporting documentation, including the background information, methods and results, protocols, and analysis of what the map results mean.

Latest evidence gap map reports

Evidence gap map reports

The evidence on food systems and nutrition: insights from a living evidence and gap map,

The evidence on food systems and nutrition: insights from a living evidence and gap map

Evidence gap map 3ie 2024  
The authors of this report analyze findings of impact evaluations and systematic reviews that assess the effects of food systems interventions on food security and nutrition outcomes.

Mapping the evidence of climate change and biodiversity interventions on environmental and human outcomes in low- and middle-income countries

Mapping the evidence of climate change and biodiversity interventions on environmental and human outcomes in low- and middle-income countries

Evidence gap map 3ie 2024  
The authors of this report present the findings of an evidence gap map that includes studies evaluating the effects of climate change and biodiversity interventions on environmental and human wellbeing outcomes.

Interventions to reduce anaemia in low- and middle-income countries: An evidence gap map

Interventions to reduce anaemia in low- and middle-income countries: An evidence gap map

Evidence gap map 3ie 2024  
The authors of this report map available impact evaluations and systematic reviews of interventions that aim to reduce anaemia in low- and middle-income countries.

Promoting Sustainable Energy Development through Access, Renewables and Efficient Technologies: An Evidence Gap Map

Promoting Sustainable Energy Development through Access, Renewables and Efficient Technologies: An Evidence Gap Map

Evidence gap map 3ie 2024  
This report presents the findings of a systematic search to identify and map the impact evaluations and systematic reviews of interventions that aim to promote sustainable energy in low- and middle-income countries.

Addressing Root Causes and Drivers of Irregular Migration: An Evidence Gap Map

Addressing Root Causes and Drivers of Irregular Migration: An Evidence Gap Map

Evidence gap map 3ie 2023  
The authors of the report systematically describe the available evidence on interventions that address the root causes of irregular migration in low- and middle-income countries.

Land-use change and forestry programmes in low- and middle-income countries: an evidence gap map update

Land-use change and forestry programmes in low- and middle-income countries: an evidence gap map update

Evidence gap map 3ie 2024  
The authors of this report map the latest impact evaluations and systematic reviews of interventions on land-use change and forestry programmes.

Strengthening good governance in low- and middle-income countries: an evidence gap map

Strengthening good governance in low- and middle-income countries: an evidence gap map

Evidence gap map 3ie 2023  
Authors of this report present findings from an evidence gap map of interventions that aim to strengthen governance effectiveness in low-and middle-income countries.

Promoting political competition through elections in low- and middle-income countries: an evidence gap map

Promoting political competition through elections in low- and middle-income countries: an evidence gap map

Evidence gap map 3ie 2023  
Authors of this report presents the findings of a systematic search to identify and map the evidence base of impact evaluations and systematic reviews of interventions that aim to promote political competition effectiveness in low- and middle-income countries.

Agriculture-led Growth in Low- and Middle-income Countries: An Evidence Gap Map

Agriculture-led Growth in Low- and Middle-income Countries: An Evidence Gap Map

Evidence gap map 3ie 2023  
This report provides an overview of the available impact evaluations and systematic reviews on agriculture-led growth interventions to support decision-making in global agricultural development.

Food systems and nutrition: Describing the evidence from 2000 to 2023

Food systems and nutrition: Describing the evidence from 2000 to 2023

Evidence gap map 3ie 2023  
The authors of this report map the latest impact evaluations and systematic reviews that assess the effects of food systems interventions on food security and nutrition outcomes in low-and middle-income countries.