Comment

A comment on 'Harold Jeffreys's Theory of Probability Revisited' by Christian P. Robert, Nicolas Chopin, and Judith Roussea

Three things that every medical writer should know about statistics

No abstract available

To superspace and beyond

The significance of an algorithm developed by H. T. Stokes & B. J. Campbell [Acta Cryst. (2017), A73, 4-13] is discussed. The algorithm promises to be a key tool for understanding the structure-property relationships of the many technologically important materials that display incommensurate modulations in their atomic and/or magnetic structure

The fluorine-NHC gauche effect: a structural and computational study

Herein, we report the synthesis and X-ray structural analysis of a collection of fluorinated metal N-heterocyclic carbenes (Ag, Au, Pd, Rh, Ir) and their precursor salts. The common structural feature of these species is a flanking fluoroethyl group which is either freely rotating or embedded within a bicyclic framework. Solid state analysis confirmed a gauche conformational preference in all cases with the fluorine adopting a syn clinal arrangement (ϕ[NCCF] ~ 60°) with respect to the triazolium nitrogen at the vicinal position of the NHC. A density functional theory analysis was employed to quantify these effects and evaluate the influence of electronic modulation of the carbenic carbon [(C=N+); neutral carbene (C:); metal-bound carbene (C=M)], on the relative gauche / anti preference, thus highlighting the potential of this conformational phenomenon as a useful molecular design strategy for controlling the topology of organometallic complexes

Development of a Comprehensive Approach for the Early Diagnosis of Geriatric Syndromes in General Practice.

According to demographic projections, a significant increase in the proportion of the elderly population is anticipated worldwide. This aging of the population will lead to an increase in the prevalence of chronic diseases and functional impairment. This expected increase will result in growing use of the health care system that societies are largely unprepared to address. General practitioners (GPs) are at the front line of this huge epidemiological challenge, but appropriate tools to diagnose and manage elderly patients in routine general practice are lacking. Indeed, while primary prevention and the management of common chronic diseases, such as hypertension, diabetes, or cardiac ischemic diseases, are routinely and mostly adequately performed in primary care, the management of geriatric syndromes is often incomplete. In order to address these shortcomings, this theoretical work aims to first develop, based on the best available evidence, a brief assessment tool (BAT) specifically designed for geriatric syndromes identification in general practice and, second, to propose a conceptual framework for the management of elderly patients in general practice that integrates the BAT instrument into the usual care of GPs. To avoid proposing unachievable goals for the care of elderly patients in general practice (for example, performing all the best screening tools for geriatric conditions identification and care), this work proposes an innovative way to combine geriatric assessment with the management of common chronic diseases

Stammzellbasierte Ansätze zur Therapie von Innenohrerkrankungen

Zusammenfassung: Das große Potenzial von Stammzellen zur Regeneration verlorener Gewebezellen wird zunehmend in allen Fachbereichen der modernen Medizin erkannt. Abgesehen von Blutstammzellen haben Stammzellen aber noch nicht Einzug in klinische Therapieformen gehalten. Die heutigen Experimente mit Stammzellen für die Therapie von Innenohrerkrankungen sind im Bereich der Grundlagenforschung anzusiedeln. Mehrere vielversprechende Arbeiten haben bewiesen, dass morphologisch und immunologisch differenzierbare Innenohrzellen wie Haarzellen, Stützzellen und auditorische Nervenzellen, in vitro und in vivo aus verschiedenen Stammzelltypen generiert werden können. Bisher haben aber noch keine Studien funktionelle Resultate in Bezug auf das Hörvermögen oder die vestibuläre Funktion geliefer

Understanding Variation in Sets of N-of-1 Trials.

A recent paper in this journal by Chen and Chen has used computer simulations to examine a number of approaches to analysing sets of n-of-1 trials. We have examined such designs using a more theoretical approach based on considering the purpose of analysis and the structure as regards randomisation that the design uses. We show that different purposes require different analyses and that these in turn may produce quite different results. Our approach to incorporating the randomisation employed when the purpose is to test a null hypothesis of strict equality of the treatment makes use of Nelder's theory of general balance. However, where the purpose is to make inferences about the effects for individual patients, we show that a mixed model is needed. There are strong parallels to the difference between fixed and random effects meta-analyses and these are discussed