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A tutorial on sample size calculation for multiple-period cluster randomized parallel, cross-over and stepped-wedge trials using the Shiny CRT Calculator.
(2020-06-01)
It has long been recognized that sample size calculations for cluster randomized trials require consideration of the correlation between multiple observations within the same cluster. When measurements are taken at anything ...
Risk of miscarriage after chorionic villus sampling.
(2020-04-12)
OBJECTIVE: To estimate the risk of miscarriage associated to chorionic villus sampling (CVS). METHODS: This was a retrospective cohort study performed in eight fetal-medicine units in Spain, Belgium and Bulgaria. Two ...
The Effects of Private Health Insurance on Universal Health Coverage Objectives in China: A Systematic Literature Review.
(2020-03-19)
BACKGROUND: We conducted a systematic review on the role of private health insurance to complement the social health insurance system towards achieving universal health coverage in China. This review presents the impacts ...
Seasonal variation in fetal lateral cerebral ventricular diameter.
(Wiley Online, 2020-02)
What is already known about this topic?
Lateral cerebral ventriculomegaly in the fetus associates with increased risk of neuropsychiatric disorders in childhood and adulthood.
Vitamin D deficiency has been posited as a ...
High-dose oral vitamin D supplementation and mortality in people aged 65-84 years: the VIDAL cluster feasibility RCT of open versus double-blind individual randomisation.
(NIHR Journals Library, 2020-02)
BACKGROUND: Randomised controlled trials demonstrating improved longevity are needed to justify high-dose vitamin D supplementation for older populations. OBJECTIVES: To demonstrate the feasibility of a large trial ...
Promising peak flow diary compliance with an electronic peak flow meter and linked mobile smartphone app
(Nature Research (part of Springer Nature), 2020-05-08)
Peak expiratory flow (PEF) monitoring is recommended in the management of asthma. However, compliance is poor, and this is often attributed to the burden of measurement and recording. The Smart Peak Flow (SPF) device and ...
