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16 results

  • Depression screening with patient-targeted feedback in cardiology: DEPSCREEN-INFO randomised clinical trial

  • Bernd Löwe, Stefan Blankenberg, Karl Wegscheider, Hans-Helmut König, Dirk Walter, Alexandra M. Murray, Benjamin Gierk, Sebastian Kohlmann
  • Journal:
    The British Journal of Psychiatry / Volume 210 / Issue 2 / February 2017
    Published online by Cambridge University Press:
    02 January 2018, pp. 132-139
    Print publication:
    February 2017
    • Article
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  • Background

    International guidelines advocate depression screening in patients with coronary heart disease (CHD) and other chronic illnesses, but evidence is lacking.

    Aims

    To test the differential efficacy of written patient-targeted feedback v. no written patient feedback after depression screening.

    Method

    Patients with CHD or hypertension from three cardiology settings were randomised and screened for depression (ClinicalTrials.gov Identifier: NCT01879111). Compared with the control group, where only cardiologists received written feedback, in the intervention group both cardiologists and patients received written feedback regarding depression status. Depression severity was measured 1 month (primary outcome) and 6 months after screening.

    Results

    The control group (n = 220) and the patient-feedback group (n = 155) did not differ in depression severity 1 month after screening. Six months after screening, the patient-feedback group showed significantly greater improvements in depression severity and was twice as likely to seek information about depression compared with the control group.

    Conclusions

    Patient-targeted feedback in addition to screening has a significant but small effect on depression severity after 6 months and may encourage patients to take an active role in the self-management of depression.

Monoidal Topology
  • A Categorical Approach to Order, Metric, and Topology
  • Edited by Dirk Hofmann, Gavin J. Seal, Walter Tholen
  • Published online:
    05 August 2014
    Print publication:
    31 July 2014
  • Monoidal Topology describes an active research area that, after various past proposals on how to axiomatize 'spaces' in terms of convergence, began to emerge at the beginning of the millennium. It combines Barr's relational presentation of topological spaces in terms of ultrafilter convergence with Lawvere's interpretation of metric spaces as small categories enriched over the extended real half-line. Hence, equipped with a quantale V (replacing the reals) and a monad T (replacing the ultrafilter monad) laxly extended from set maps to V-valued relations, the book develops a categorical theory of (T,V)-algebras that is inspired simultaneously by its metric and topological roots. The book highlights in particular the distinguished role of equationally defined structures within the given lax-algebraic context and presents numerous new results ranging from topology and approach theory to domain theory. All the necessary pre-requisites in order and category theory are presented in the book.

  • Preface

  • Edited by Dirk Hofmann, Universidade de Aveiro, Portugal, Gavin J. Seal, Walter Tholen, York University, Toronto
  • Book:
    Monoidal Topology
    Published online:
    05 August 2014
    Print publication:
    31 July 2014, pp xv-xviii

  • Summary

    Monoidal topology describes an active research area that, after many proposals throughout the past century on how to axiomatize “spaces” in terms of convergence, started to emerge at the beginning of the millennium. It provides a powerful unifying framework and theory for fundamental ordered, metric, and topological structures. Inspired by the topological concept of filter convergence, its methods are lax-algebraic and categorical, with generalized notions of monoid recurring frequently as the fundamental building blocks of its key notions. Since the main components of this new area have to date been available only in a scattered array of research articles, the authors of this book hope that a self-contained and consistent introduction to the theory will serve a broad range of mathematicians, scientists, and their graduate students with an interest in a modern treatment of the mathematical structures in question. With all essential elements from order and category theory provided in the book, it is assumed that the reader will appreciate a framework which highlights the power of equationally defined algebraic structures as particularly important elements of the broader lax-algebraic context which, roughly speaking, replaces equalities by inequalities.

    There are two principal roots to the theory presented in this book: Barr's 1970 relational presentation of topological spaces which naturally extends Manes' 1969 equational presentation of compact Hausdorff spaces as the Eilenberg–Moore algebras of the ultrafilter monad, and Lawvere's 1973 description of metric spaces as (small individual) categories enriched over the extended non-negative real half-line.