O
Obioha C Ukoumunne
Researcher at University of Exeter
Publications - 303
Citations - 16488
Obioha C Ukoumunne is an academic researcher from University of Exeter. The author has contributed to research in topics: Mental health & Randomized controlled trial. The author has an hindex of 65, co-authored 276 publications receiving 14075 citations. Previous affiliations of Obioha C Ukoumunne include University of Toronto & University of Melbourne.
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Methods for evaluating area-wide and organisation-based interventions in health and health care: a systematic review.
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Components of variance and intraclass correlations for the design of community-based surveys and intervention studies: data from the Health Survey for England 1994.
TL;DR: In these data, ICCs were inversely related to cluster size, but design effects could be substantial when the cluster size was large, and these data may provide useful information for the design of epidemiologic studies in which the units sampled or allocated range in size from households to large administrative areas.
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Patterns of intra-cluster correlation from primary care research to inform study design and analysis.
Geoffrey Adams,Martin Gulliford,Obioha C Ukoumunne,Sandra Eldridge,Susan Chinn,Michael J. Campbell +5 more
TL;DR: The precise magnitude of between-cluster variation for a given measure can rarely be estimated in advance and studies should be designed with reference to the overall distribution of ICCs and with attention to features that increase efficiency.
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Mediterranean diet, cognitive function, and dementia: a systematic review.
Ilianna Lourida,Maya Soni,Joanna Thompson-Coon,Nitin Purandare,Iain A. Lang,Obioha C Ukoumunne,David J. Llewellyn +6 more
TL;DR: Higher adherence to Mediterranean diet was associated with better cognitive function, lower rates of cognitive decline, and reduced risk of Alzheimer disease in nine out of 12 studies, whereas results for mild cognitive impairment were inconsistent.
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Attention Restoration Theory: A systematic review of the attention restoration potential of exposure to natural environments
Heather Ohly,Mathew P. White,Benedict W. Wheeler,Alison Bethel,Obioha C Ukoumunne,Vasilis Nikolaou,Ruth Garside +6 more
TL;DR: The diversity of evidence around ART is highlighted in terms of populations, study design, and outcomes, with significant positive effects of exposure to natural environments for three measures (Digit Span Forward, Digit Span Backward, and Trail Making Test B).