31 Works

Data from: The REporting of studies Conducted using Observational Routinely-collected health Data (RECORD) statement: methods for arriving at consensus and developing reporting guidelines

Stuart G. Nicholls, Pauline Quach, Erik Von Elm, Astrid Guttmann, David Moher, Irene Petersen, Henrik T. Sørensen, Liam Smeeth, Sinéad M. Langan & Eric I. Benchimol
Objective: Routinely collected health data, collected for administrative and clinical purposes, without specific a priori research questions, are increasingly used for observational, comparative effectiveness, health services research, and clinical trials. The rapid evolution and availability of routinely collected data for research has brought to light specific issues not addressed by existing reporting guidelines. The aim of the present project was to determine the priorities of stakeholders in order to guide the development of the REporting...

Data from: Redesigning the ‘choice architecture’ of hospital prescription charts: a mixed methods study incorporating in-situ simulation

Dominic King, Ali Jabbar, Esmita Charani, Colin Bicknell, Zhe Wu, Gavin Miller, Mark Gilchrist, Ivo Vlaev, Bryony Dean Franklin & Ara Darzi
Objectives: To incorporate behavioural insights into the user-centred design of an inpatient prescription chart (Imperial Drug Chart Evaluation and Adoption Study, IDEAS chart) and to determine whether changes in the content and design of prescription charts could influence prescribing behaviour and reduce prescribing errors. Design: A mixed-methods approach was taken in the development phase of the project; in situ simulation was used to evaluate the effectiveness of the newly developed IDEAS prescription chart. Setting: A...

Data from: How to calculate the non­-synonymous to synonymous rate ratio of protein-coding genes under the Fisher­-Wright mutation­-selection framework

Mario Dos Reis
First principles of population genetics are used to obtain formulae relating the non-synonymous to synonymous substitution rate ratio to the selection coefficients acting at codon sites in protein-coding genes. Two theoretical cases are discussed and two examples from real data (a chloroplast gene and a virus polymerase) are given. The formulae give much insight into the dynamics of non-synonymous substitutions and may inform the development of methods to detect adaptive evolution.

Data from: Analysis of iris surface features in populations of diverse ancestry

Melissa Edwards, David Cha, S. Krithika, Monique Johnson & Esteban J. Parra
There are many textural elements that can be found in the human eye, including Fuchs’ crypts, Wolfflin nodules, pigment spots, contraction furrows and conjunctival melanosis. Although iris surface features have been well-studied in populations of European ancestry, the worldwide distribution of these traits is poorly understood. In this paper, we develop a new method of characterizing iris features from photographs of the iris. We then apply this method to a diverse sample of East Asian,...

Data from: New record of Egertonia (Elopiformes, Phyllodontidae) from the Late Cretaceous of South India

Thomas J. D. Halliday, Andrew R. Cuff, Guntupalli V. R. Prasad, Mechek S. Thanglemmoi & Anjali Goswami
We report a new occurrence of the phyllodontid teleost fish Egertonia from the Late Cretaceous Kallamedu Formation of the Cauvery Basin, South India. This is the oldest occurrence of Phyllodontidae in India, and only the second Cretaceous Gondwanan occurrence of this genus, following a toothplate previously described from the Late Cretaceous Maevarano Formation, Madagascar. The presence of phyllodontid fish supports a fluvial–deltaic or brackish environment for the lower part of the Kallamedu Formation, a rich...

Data from: A life-cycle model of human social groups produces a u-shaped distribution in group size

Gul Deniz Salali, Harvey Whitehouse & Michael E. Hochberg
One of the central puzzles in the study of sociocultural evolution is how and why transitions from small-scale human groups to large-scale, hierarchically more complex ones occurred. Here we develop a spatially explicit agent-based model as a first step towards understanding the ecological dynamics of small and large-scale human groups. By analogy with the interactions between single-celled and multicellular organisms, we build a theory of group lifecycles as an emergent property of single cell demographic...

Data from: Mental illness, poverty and stigma in India: a case control study

Jean-Francois Trani, Parul Bakhshi, Jill Kuhlberg, Sreelatha S. Venkataraman, Hemalatha Venkataraman, Nagendra N. Mishra, Nora E. Groce, Sushrut Jadhav & Smita Deshpande
Objective: To assess the effect of experienced stigma on depth of multidimensional poverty of persons with severe mental illness (PSMI) in Delhi, India, controlling for gender, age and caste. Design: Matching case (hospital)–control (population) study. Setting: University Hospital (cases) and National Capital Region (controls), India. Participants: A case–control study was conducted from November 2011 to June 2012. 647 cases diagnosed with schizophrenia or affective disorders were recruited and 647 individuals of same age, sex and...

Data from: High levels of interspecific gene flow in an endemic cichlid fish adaptive radiation from an extreme lake environment

Antonia G. P. Ford, Kanchon K. Dasmahapatra, Lukas Rüber, Karim Gharbi, Timothée Cezard & Julia J. Day
Studying recent adaptive radiations in isolated insular systems avoids complicating causal events and thus may offer clearer insight into mechanisms generating biological diversity. Here, we investigate evolutionary relationships and genomic differentiation within the recent radiation of Alcolapia cichlid fish that exhibit extensive phenotypic diversification, and which are confined to the extreme soda lakes Magadi and Natron in East Africa. We generated an extensive RAD data set of 96 individuals from multiple sampling sites and found...

Data from: A dynamic framework for the study of optimal birth intervals reveals the importance of sibling competition and mortality risks

Matthew G. Thomas, Daryl P. Shanley, Alasdair I. Houston, John M. McNamara, Ruth Mace & Tom B. L. Kirkwood
Human reproductive patterns have been well studied, but the mechanisms by which physiology, ecology and existing kin interact to affect the life history need quantification. Here, we create a model to investigate how age-specific interbirth intervals adapt to environmental and intrinsic mortality, and how birth patterns can be shaped by competition and help between siblings. The model provides a flexible framework for studying the processes underlying human reproductive scheduling. We developed a state-based optimality model...

Data from: The (in)effectiveness of simulated blur for depth perception in naturalistic images

Guido Maiello, Manuela Chessa, Fabio Solari & Peter J. Bex
We examine depth perception in images of real scenes with naturalistic variation in pictorial depth cues, simulated dioptric blur and binocular disparity. Light field photographs of natural scenes were taken with a Lytro plenoptic camera that simultaneously captures images at up to 12 focal planes. When accommodation at any given plane was simulated, the corresponding defocus blur at other depth planes was extracted from the stack of focal plane images. Depth information from pictorial cues,...

Data from: High levels of genetic structure and striking phenotypic variability in a sexually dimorphic suckermouth catfish from the African Highveld

Jake Morris, Antonia G. P. Ford, Jarome R. Ali, Claire R. Peart, Roger Bills & Julia J. Day
Uncovering biological diversity to more accurately understand diversity patterns, and ultimately the processes driving diversification, is important not only from an evolutionary perspective but also a conservation perspective. This is particularly pertinent in Africa's rivers in which overall diversity, as well as how it arose, is poorly understood in comparison with lacustrine environments. Here we investigate population divergence in the sexually dimorphic suckermouth catfish species Chiloglanis anoterus (Crass, 1960) from the African Highveld, in which...

Data from: Eutherian morphological disparity across the end-Cretaceous mass extinction

Thomas John Dixon Halliday & Anjali Goswami
In the aftermaths of mass extinction events, during radiations of clades, and in several other evolutionary scenarios, there is often a decoupling of taxonomic diversity and morphological disparity. The placental mammal radiation after the end-Cretaceous mass extinction is one of the archetypal adaptive radiations, but the change in morphological disparity of the entire skeleton has never been quantified across this important boundary. We reconstruct ancestral morphologies of 680 discrete morphological characters onto dated phylogenies of...

Data from: The impact of HCV infection duration on HIV disease progression and response to cART amongst HIV seroconverters in the UK

Jamie Inshaw, Clifford Leen, Martin Fisher, Richard Gilson, David Hawkins, Simon Collins, Julie Fox, Ken McLean, Sarah Fidler, Andrew Phillips, Sam Lattimore, Abdel Babiker & Kholoud Porter
Introduction: The effect of HCV infection on HIV disease progression remains unclear; the effect of HCV infection duration on HIV disease progression is unknown. Methods: We used data from a cohort of HIV seroconverters to investigate the effect of HCV infection duration on time from HIV seroconversion to CD4 <350cells/mm3, AIDS or death, censoring at the earlier of cART initiation or last clinic visit, adjusting for confounders and splitting data into follow up periods from...

Data from: Validating the power of mitochondrial metagenomics for community ecology and phylogenetics of complex assemblages

Carola Gómez-Rodríguez, Alex Crampton-Platt, Martijn J. T. N. Timmermans, Andrés Baselga & Alfried P. Vogler
1. The biodiversity of mixed-species samples of arthropods can be characterized by shotgun sequencing of bulk genomic DNA and subsequent bioinformatics assembly of mitochondrial genomes. Here, we tested the power of mitochondrial metagenomics by conducting Illumina sequencing on mixtures of >2600 individuals of leaf beetles (Chrysomelidae) from 10 communities. 2. Patterns of species richness, community dissimilarity and biomass were assessed from matches of reads against three reference databases, including (i) a custom set of mitogenomes...

Data from: Binding space and time through action

Nicola Binetti, Nobuhiro Hagura, Charles Fadipe, Alessandro Tomassini, Vincent Walsh & Sven Bestmann
Space and time are intimately coupled dimensions in the human brain. Several lines of evidence suggest that space and time are processed by a shared analogue magnitude system. It has been proposed that actions are instrumental in establishing this shared magnitude system. Here we provide evidence in support of this hypothesis, by showing that the interaction between space and time is enhanced when magnitude information is acquired through action. Participants observed increases or decreases in...

Data from: Anxiety-like behavioural inhibition is normative under environmental threat-reward correlations

Dominik R. Bach
Behavioural inhibition is a key anxiety-like behaviour in rodents and humans, distinct from avoidance of danger, and reduced by anxiolytic drugs. In some situations, it is not clear how behavioural inhibition minimises harm or maximises benefit for the agent, and can even appear counterproductive. Extant explanations of this phenomenon make use of descriptive models but do not provide a formal assessment of its adaptive value. This hampers a better understanding of the neural computations underlying...

Data from: Resilience of self-organised and top-down planned cities—a case study on London and Beijing street networks

Jiaqiu Wang
The success or failure of the street network depends on its reliability. In this article, using resilience analysis, the author studies how the shape and appearance of street networks in self-organised and top-down planned cities influences urban transport. Considering London and Beijing as proxies for self-organised and top-down planned cities, the structural properties of London and Beijing networks first are investigated based on their primal and dual representations of planar graphs. The robustness of street...

Nutrient chemistry of Arctic Lakes in Greenland, Norway, Russia and Alaska

E. J. Whiteford, M. Van Hardenbroek, S. McGowan, V. J. Jones, M.E. Edwards, P. G. Langdon & N. J. Anderson
This dataset contains nutrient chemistry data from 14 lakes in the Arctic region: 4 in Russia and Alaska and 3 in Greenland and Norway. Nutrient chemistry was measured on one occasion only at each lake, with date of collection ranging from 01/04/2011 to 14/03/2014. The following nutrients were measured: total phosphorus, soluble reactive phosphorus, total nitrogen, nitrate, ammonium, chlorophyll a, silicate, sodium, magnesium, potassium, calcium, sulphate, chloride and dissolved organic carbon. All nutrients were measured...

Data from: Variation in promiscuity and sexual selection drives avian rate of Faster-Z evolution

Alison E. Wright, Peter W. Harrison, Fabian Zimmer, Stephen H. Montgomery, Marie A. Pointer & Judith E. Mank
Higher rates of coding sequence evolution have been observed on the Z chromosome relative to the autosomes across a wide range of species. However, despite a considerable body of theory, we lack empirical evidence explaining variation in the strength of the Faster-Z Effect. To assess the magnitude and drivers of Faster-Z Evolution, we assembled six de novo transcriptomes, spanning 90 million years of avian evolution. Our analysis combines expression, sequence and polymorphism data with measures...

Data from: The genomes of two key bumblebee species with primitive eusocial organisation

Ben M. Sadd, Seth M. Barribeau, Guy Bloch, Dirk C. De Graaf, Peter Dearden, Christine Elsik, Jurgen Gadau, Cornelius Grimmelikhuijzen, Martin Hasselmann, Jeffrey Lozier, Hugh Robertson, Guy Smagghe, Eckart Stolle, Matthias Van Vaerenbergh, Robert Waterhouse, Erich Bornberg-Bauer, Steffan Klasberg, Anna Bennett, Francisco Camara, Roderic Guigo, Katharina Hoff, Marco Mariotti, Monica Munos-Torres, Terence Murphy, Didac Santesmasses … & Kim C. Worley
Background: The shift from solitary to social behavior is one of the major evolutionary transitions. Primitively eusocial bumblebees are uniquely placed to illuminate the evolution of highly eusocial insect societies. Bumblebees are also invaluable natural and agricultural pollinators, and there is widespread concern over recent population declines in some species. High-quality genomic data will inform key aspects of bumblebee biology, including susceptibility to implicated population viability threats. Results: We report the high quality draft genome...

Data from: Visual and non-visual navigation in blind patients with a retinal prosthesis

Sara Garcia, Karin Petrini, Gary S. Rubin, Lyndon Da Cruz & Marko Nardini
Human adults with normal vision can combine visual landmark and non-visual self-motion cues to improve their navigational precision. Here we asked whether blind individuals treated with a retinal prosthesis could also benefit from using the resultant new visual signal together with non-visual information when navigating. Four patients (blind for 15-52 years) implanted with the Argus II retinal prosthesis (Second Sight Medical Products Inc. Sylmar, CA), and five age-matched and six younger controls, participated. Participants completed...

Nitrogen and Carbon isotope data from 210Pb dated lake sediment cores in the United Kingdom

S.D. Turner & N.L. Rose
A dataset of historical sediment Carbon and Nitrogen isotope measurements from lake cores (n=95) spanning the range of lake types and catchments found across the UK. These data have been obtained from the Environmental Change Research Centre (ECRC) lake sediment core archive with well-resolved time intervals (1850, 1900, 1980 and present) determined by radiometric dating (210Pb; 137Cs). This data has been collated to investigate historical sources and accumulation of C and N in lakes. This...

Data from: Genetics of plasminogen activator inhibitor-1 (PAI-1) in a Ghanaian population

Marquitta J. White, Nuri M. Kodaman, Reed H. Harder, Folkert W. Asselbergs, Douglas E. Vaughan, Nancy J. Brown, Jason H. Moore & Scott M. Williams
Plasminogen activator inhibitor 1 (PAI-1), a major modulator of the fibrinolytic system, is an important factor in cardiovascular disease (CVD) susceptibility and severity. PAI-1 is highly heritable, but the few genes associated with it explain only a small portion of its variation. Studies of PAI-1 typically employ linear regression to estimate the effects of genetic variants on PAI-1 levels, but PAI-1 is not normally distributed, even after transformation. Therefore, alternative statistical methods may provide greater...

Data from: The evolution of sexually dimorphic tail feathers is not associated with tail skeleton dimorphism

Ryan N. Felice & Patrick M. O'Connor
Sexual selection can influence the evolution of sexually dimorphic exaggerated display structures. Herein, we explore whether such costly ornamental integumentary structures evolve independently or if they are correlated with phenotypic change in the associated skeletal system. In birds, elongate tail feathers have frequently evolved in males and are beneficial as intraspecific display structures but impart a locomotor/energetic cost. Using the sexually dimorphic tail feathers of several passeriform species as a model system, we test the...

Data from: Anthropogenic and ecological drivers of amphibian disease (Ranavirosis)

Alexandra C. North, David J. Hodgson, Stephen J. Price & Amber G. F. Griffiths
Ranaviruses are causing mass amphibian die-offs in North America, Europe and Asia, and have been implicated in the decline of common frog (Rana temporaria) populations in the UK. Despite this, we have very little understanding of the environmental drivers of disease occurrence and prevalence. Using a long term (1992-2000) dataset of public reports of amphibian mortalities, we assess a set of potential predictors of the occurrence and prevalence of Ranavirus-consistent common frog mortality events in...

Registration Year

  • 2015
    31

Resource Types

  • Dataset
    31

Affiliations

  • University College London
    31
  • University of Southampton
    2
  • Natural History Museum
    2
  • University of Toronto
    2
  • University of Bath
    1
  • Federal Institute of São Paulo
    1
  • Sao Paulo State University
    1
  • Western General Hospital
    1
  • London School of Hygiene & Tropical Medicine
    1
  • University of Hohenheim
    1