BMJ : British medical journal
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To examine the prevalence of a risk of bias associated with the design and conduct of cluster randomised controlled trials among a sample of recently published studies. ⋯ Some recently published cluster randomised trials may not have taken adequate precautions to guard against threats to the internal validity of their design.
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Review
Effects of communicating individual risks in screening programmes: Cochrane systematic review.
To assess the effects of different types of individualised risk communication for patients who are deciding whether to participate in screening. ⋯ Individualised risk estimates may be effective for purposes of population health, but their effects on increasing uptake of screening programmes may not be interpretable as evidence of informed decision making by patients. Greater attention is required to ways of developing interventions for screening programmes that can achieve this.