%0 Report
        %A Haylock, Michael
%A Kampkötter, Patrick
%A Macis, Mario
%A Sauter, Jürgen
%A Seitz, Susanne
%A Slonim, Robert
%A Wiesen, Daniel
%A Schmidt, Alexander H.
        %T Improving the Availability of Unrelated Stem Cell Donors: Evidence from a Major Donor Registry
        %D 2022
        %8 2022 Feb
        %I Institute of Labor Economics (IZA)
        %C Bonn
        %7 IZA Discussion Paper
        %N 15096
        %U https://www.iza.org/publications/dp15096
        %X The unavailability of potential stem cell donors poses a critical challenge for donor registries worldwide. This study investigates the impact of initiatives of a stem cell donor registry to enhance donors' availability for confirmatory typing. Initiatives ask donors to provide a sample for genetic analysis and/or information on their temporal unavailability. We analyzed 91,479 confirmatory typing requests from DKMS Germany, a large stem cell donor registry, exploiting a quasi-random initiative assignment based on observable characteristics. We find that, first, invitation to the initiatives increases donors' availability. Intention-to-treat estimates yield effects ranging from 2.5 to 3.2 percentage points, and local average treatment effects estimates range from 3.8 to 8.2 percentage points (baseline: 77.1%). Second, the difference in availability between participants and non-participants is over 10 percentage points. The initiatives yield a direct positive effect on donor availability and a selection effect through which participation signals a higher commitment.
        %K intention-to-treat
%K sorting
%K registry
initiatives
%K donor availability
%K unrelated stem cell donation
%K local average treatment effects