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BMJ Qual Saf. 2019 Feb;28(2):167. doi: 10.1136/bmjqs-2018-008777. Epub 2018 Oct 12.

External validity is also an ethical consideration in cluster-randomised trials of policy changes.

Author information

1
Department of Surgery, Feinberg School of Medicine, Surgical Outcomes and Quality Improvement Center, Northwestern University, Chicago, Illinois, USA k-bilimoria@northwestern.edu.
2
Department of Surgery, Feinberg School of Medicine, Surgical Outcomes and Quality Improvement Center, Northwestern University, Chicago, Illinois, USA.
3
Department of Statistics, Northwestern University, Chicago, Illinois, USA.

KEYWORDS:

accreditation; anaesthesia; attitudes

PMID:
30314975
DOI:
10.1136/bmjqs-2018-008777

Conflict of interest statement

Competing interests: None declared.

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