Turner KM, Huntley A, Yardley T, Dawson S, Dawson S (2024)

Defining usual care comparators when designing pragmatic trials of complex health interventions: a methodology review. Trials 25, 117. https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-024-07956-7
Systematic methodology review of current thinking about defining usual care comparisons in pragmatic randomised trials, with guidance for researchers.

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