Search Results - "THOMAS, A. P"
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Evidence for a non-rhombohedral average structure in the lead-free piezoelectric material Na0.5Bi0.5TiO3
Published in Journal of applied crystallography (01-12-2010)“…The potential lead‐free piezoelectric material sodium bismuth titanate, Na0.5Bi0.5TiO3, was investigated by means of high‐resolution single‐crystal X‐ray…”
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Performance of the Framingham risk models and pooled cohort equations for predicting 10-year risk of cardiovascular disease: a systematic review and meta-analysis
Published in BMC medicine (13-06-2019)“…The Framingham risk models and pooled cohort equations (PCE) are widely used and advocated in guidelines for predicting 10-year risk of developing coronary…”
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External validation of clinical prediction models using big datasets from e-health records or IPD meta-analysis: opportunities and challenges
Published in BMJ (Online) (22-06-2016)“…Access to big datasets from e-health records and individual participant data (IPD) meta-analysis is signalling a new advent of external validation studies for…”
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4
A photoferroelectric material is more than the sum of its parts
Published in Nature materials (22-03-2012)Get full text
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A guide to systematic review and meta-analysis of prediction model performance
Published in BMJ (Online) (05-01-2017)“…Validation of prediction models is highly recommended and increasingly common in the literature. A systematic review of validation studies is therefore…”
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Individual participant data meta-analysis for a binary outcome: one-stage or two-stage?
Published in PloS one (09-04-2013)“…A fundamental aspect of epidemiological studies concerns the estimation of factor-outcome associations to identify risk factors, prognostic factors and…”
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Guidelines and quality criteria for artificial intelligence-based prediction models in healthcare: a scoping review
Published in NPJ digital medicine (10-01-2022)“…While the opportunities of ML and AI in healthcare are promising, the growth of complex data-driven prediction models requires careful quality and…”
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Combining randomized and non‐randomized evidence in network meta‐analysis
Published in Statistics in medicine (15-04-2017)“…Non‐randomized studies aim to reveal whether or not interventions are effective in real‐life clinical practice, and there is a growing interest in including…”
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Implementing clinical trial data sharing requires training a new generation of biomedical researchers
Published in Nature Medicine (01-02-2023)“…Data sharing enhances the value of medical research and builds trust in clinical trials, but more biomedical researchers need to be trained in these…”
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The missing boundary in the phase diagram of PbZr1−xTixO3
Published in Nature communications (24-10-2014)“…PbZr 1−x Ti x O 3 (PZT) is one of the most important and widely used piezoelectric materials. The study of its local and average structures is of fundamental…”
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Isoniazid Prophylactic Therapy for the Prevention of Tuberculosis in HIV Infected Adults: A Systematic Review and Meta-Analysis of Randomized Trials
Published in PloS one (09-11-2015)“…Infection with Human Immunodeficiency virus (HIV) is an important risk factor for Tuberculosis (TB). Anti-Retroviral Therapy (ART) has improved the prognosis…”
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Return to play after surgery for isolated unstable syndesmotic ankle injuries (West Point grade IIB and III) in 110 male professional football players: a retrospective cohort study
Published in British journal of sports medicine (01-10-2020)“…To evaluate time to return to play following surgical stabilisation of isolated unstable syndesmosis injuries in a cohort of professional male football…”
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Intraday liquidity in soybean complex futures markets
Published in The journal of futures markets (01-07-2022)“…We examine persistence and cross‐market liquidity spillovers in the Chicago Mercantile Exchange soybean complex futures markets. A multidimensional liquidity…”
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Get real in individual participant data (IPD) meta-analysis: a review of the methodology
Published in Research synthesis methods (01-12-2015)“…Individual participant data (IPD) meta‐analysis is an increasingly used approach for synthesizing and investigating treatment effect estimates. Over the past…”
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A closed testing procedure to select an appropriate method for updating prediction models
Published in Statistics in medicine (10-12-2017)“…Prediction models fitted with logistic regression often show poor performance when applied in populations other than the development population. Model updating…”
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Detecting small‐study effects and funnel plot asymmetry in meta‐analysis of survival data: A comparison of new and existing tests
Published in Research synthesis methods (01-03-2018)“…Small‐study effects are a common threat in systematic reviews and may indicate publication bias. Their existence is often verified by visual inspection of the…”
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GetReal in network meta-analysis: a review of the methodology
Published in Research synthesis methods (01-09-2016)“…Pairwise meta‐analysis is an established statistical tool for synthesizing evidence from multiple trials, but it is informative only about the relative…”
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Imputation of systematically missing predictors in an individual participant data meta-analysis: a generalized approach using MICE
Published in Statistics in medicine (20-05-2015)“…Individual participant data meta‐analyses (IPD‐MA) are increasingly used for developing and validating multivariable (diagnostic or prognostic) risk prediction…”
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A new framework to enhance the interpretation of external validation studies of clinical prediction models
Published in Journal of clinical epidemiology (01-03-2015)“…Abstract Objectives It is widely acknowledged that the performance of diagnostic and prognostic prediction models should be assessed in external validation…”
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Statistical approaches to identify subgroups in meta-analysis of individual participant data: a simulation study
Published in BMC medical research methodology (02-09-2019)“…Individual participant data meta-analysis (IPD-MA) is considered the gold standard for investigating subgroup effects. Frequently used regression-based…”
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