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2019 Cost-Effectiveness Analysis Changelog

This page provides details about changes that were made to our cost-effectiveness analysis (CEA) in 2019. Below each change, we share a table indicating how the change impacted our cost-effectiveness estimates for each charity. (If a charity doesn't appear in the table, it was not impacted by the change.) For past versions of our CEA, see this page.

Version 1 — Published January 3, 2019

Link to the cost-effectiveness analysis file: 2019 CEA — Version 1

Change 1: Removed suggested inputs from "User inputs" sheet

We removed the suggested values from the "User inputs" sheet because these values no longer represent our best guesses. The median result of the CEA was not affected by this change.

Change 2: Removed two former staff members

We removed two former staff members from the cost-effectiveness model.



Charity
Median [Charity]
vs. cash before
Median [Charity]
vs. cash after
Percent
change
Deworm the World 18.3x 19.0x 3.9%
Schistosomiasis Control Initiative 9.4x 9.6x 2.1%
Sightsavers 9.8x 10.1x 3.3%
The END Fund 5.5x 5.7x 3.9%

Change 3: Fixed a small error in malaria development effects calculation

We found and fixed a small error in the way we were calculating malaria development effects.



Charity
Median [Charity]
vs. cash before
Median [Charity]
vs. cash after
Percent
change
Deworm the World 19.0x 19.1x 0.0%
Schistosomiasis Control Initiative 9.6x 9.6x 0.2%
Sightsavers 10.1x 10.1x 0.1%
Against Malaria Foundation 5.9x 5.8x -2.4%
Malaria Consortium 9.3x 9.0x -3.0%
The END Fund 5.7x 5.7x 0.1%