TY  - RPRT
        AU  - Haylock, Michael
AU  - Kampkötter, Patrick
AU  - Macis, Mario
AU  - Sauter, Jürgen
AU  - Seitz, Susanne
AU  - Slonim, Robert
AU  - Wiesen, Daniel
AU  - Schmidt, Alexander H.
        TI  - Improving the Availability of Unrelated Stem Cell Donors: Evidence from a Major Donor Registry
        PY  - 2022/Feb/
        PB  - Institute of Labor Economics (IZA)
        CY  - Bonn
        T2  - IZA Discussion Paper
        IS  - 15096
        UR  - https://www.iza.org/publications/dp15096
        AB  - 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.
        KW  - intention-to-treat
KW  - sorting
KW  - registry
initiatives
KW  - donor availability
KW  - unrelated stem cell donation
KW  - local average treatment effects
        ER  -