Arbeitspapier

More powerful cluster randomized control trials

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Balanced experimental designs, in which the number of treatment and control units are the same, do not maximize power subject to a cost constraint when treat-ment units are more expensive than control ones. Despite this, such balanced designs are the norm in economics. This paper describes methods to optimally choose the number of treatment and control clusters, and the number of units within treatment and control clusters, allowing for full flexibility. We use three archetypal examples from the development literature to illustrate the magnitude of the power gains, which lie between 8.5 and 19 percentage points.

Sprache
Englisch

Erschienen in
Series: IFS Working Paper ; No. W22/22

Klassifikation
Wirtschaft
Thema
Power analysis
Sample size calculations
Randomized Control Trials
Cluster Randomized Control Trials

Ereignis
Geistige Schöpfung
(wer)
McConnell, Brendon
Vera-Hernández, Marcos
Ereignis
Veröffentlichung
(wer)
Institute for Fiscal Studies (IFS)
(wo)
London
(wann)
2022

DOI
doi:10.1920/wp.ifs.2022.2222
Handle
Letzte Aktualisierung
10.03.1112, 00:10 MEZ

Datenpartner

Dieses Objekt wird bereitgestellt von:
ZBW - Deutsche Zentralbibliothek für Wirtschaftswissenschaften - Leibniz-Informationszentrum Wirtschaft. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
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Objekttyp

  • Arbeitspapier

Beteiligte

  • McConnell, Brendon
  • Vera-Hernández, Marcos
  • Institute for Fiscal Studies (IFS)

Entstanden

  • 2022

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