Explore by type of impact

Research evidence can influence policy and programme decisions in several ways. 3ie has identified seven types of evidence use and impact. Click on the buttons below to see all the summaries that relate to each type. For more information, read how 3ie classifies and verifies evidence impact.

Newest evidence impact summaries

Informing rainfall risk insurance for farmers in Gujarat, India

Evidence impact summary

The evaluation of a rainfall risk insurance programme showed poor awareness and low take-up among farmers due to high premiums, delayed payouts and weakness as a safety net, prompting the implementer to close the programme.

Informing delivery strategies for HIV self-testing kits in Zambia

Evidence impact summary

Citing 3ie evaluation findings, the World Health Organization strongly recommended offering HIV self-testing and noted that misuse, adverse events and social harms associated with self-testing were rare and comparable to standard approaches.

Promoting HIV self-testing among female sex workers in Zambia

Evidence impact summary

The World Health Organization recommended peer-delivered HIV self-tests to increase the uptake and frequency of HIV testing among female sex workers and other key populations, citing 3ie evaluations. 

Promoting HIV testing for high-risk groups in Kenya and beyond

Evidence impact summary

Citing a 3ie evaluation and other research, the World Health Organization recommended the use of text messages about specific HIV testing attributes — like the availability of self-tests — to increase testing uptake among people at high risk. 

Improving environmental and human well-being through protected areas and payments for environmental services in Cambodia

Evidence impact summary

The findings of the 3ie-supported evaluation informed the Ibis Rice Conservation Company Limited’s strategy to focus on increasing participation for its payments for environmental services or PES program and the Wildlife Conservation Society’s plans to expand the Ibis Rice program to the Keo Seima Wildlife Sanctuary.