# Why we don’t use subnational malaria mortality estimates in our cost-effectiveness models

### Summary

We recently completed a small project to determine whether using subnational baseline malaria mortality estimates would make a difference to our estimates of the cost-effectiveness of two of our top charities, the Against Malaria Foundation and Malaria Consortium. We ultimately decided not to include these adjustments because they added complexity to our models and would require frequent updating, while only making a small difference (a 3-4% improvement) to our bottom line.

Though this post is on a fairly narrow topic, we believe this example illustrates the principles we use to make decisions about what to include in our cost-effectiveness model.

# Allocation of discretionary funds from Q1 2018

In the first quarter of 2018, we received $2.96 million in funding for making grants at our discretion. In this post we discuss: • The decision to allocate the$2.96 million to the Against Malaria Foundation (AMF) (70 percent) and the Schistosomiasis Control Initiative (SCI) (30 percent).
• Our recommendation that donors give to GiveWell for granting to top charities at our discretion so that we can direct the funding to the top charity or charities with the most pressing funding need. For donors who prefer to give directly to our top charities, we continue to recommend giving 70 percent of your donation to AMF and 30 percent to SCI to maximize your impact.

# Revisiting the evidence on malaria eradication in the Americas

## Summary

• Two of GiveWell’s top charities fight malaria in sub-Saharan Africa.
• GiveWell’s valuations of these charities place some weight on research by Hoyt Bleakley on the impacts of malaria eradication efforts in the American South in the 1920s and in Brazil, Colombia, and Mexico in the 1950s.
• I reviewed the Bleakley study and mostly support its key findings: the campaigns to eradicate malaria from Brazil, Colombia, and Mexico, and perhaps the American South as well, were followed by accelerated income gains for people whose childhood exposure to the disease was reduced. The timing of these events is compatible with the theory that rolling back malaria increased prosperity.

# Our top charities for giving season 2017

This year, we added two new top charities, Evidence Action’s No Lean Season program and Helen Keller International’s vitamin A supplementation program, and retained our seven top charities from 2016. We also added Evidence Action’s Dispensers for Safe Water program to our list of standout charities.

We recommend that donors give to GiveWell for granting to top charities at our discretion so that we can direct the funding to the top charity or charities with the most pressing funding need. For donors who prefer to give directly to our top charities, we recommend giving 70 percent of your donation to the Against Malaria Foundation (AMF) and 30 percent to the Schistosomiasis Control Initiative (SCI) to maximize your impact. We expect Good Ventures, a foundation with which we work closely, to provide significant support to each top charity; our recommendation to give to AMF and SCI is based on how much good we believe additional donations can do.

# Are GiveWell’s top charities the best option for every donor?

We’re sometimes asked whether we think GiveWell’s top charities are the “best,” in some absolute sense of the word, or whether we’d ever advise that a donor give to an opportunity outside of our recommendations. This post aims to clarify how GiveWell thinks about different giving options and their suitability for different types of donors.

We believe that GiveWell’s top charities offer donors an outstanding opportunity to do a lot of good and are the best option for most donors. However, some donors—those with a very high degree of trust in a particular individual or organization to make this decision, donors with lots of time (in excess of 50 hours per year, and likely more) to consider their giving decision, or donors whose values point strongly toward a particular cause outside of the ones GiveWell covers—may find opportunities to have a greater impact per dollar than GiveWell’s top charities. Note that we think these characteristics are likely to be necessary, but not sufficient, for finding these types of opportunities; we still expect good giving to be hard, and spending, for example, 50 hours per year on research isn’t necessarily going to yield better opportunities.

In this post, we describe relevant considerations for donors in greater detail.