Zobrazeno 1 - 10
of 308
pro vyhledávání: '"Stephen J, Walters"'
Publikováno v:
BMC Nutrition, Vol 10, Iss 1, Pp 1-12 (2024)
Abstract Malnutrition has remained a global public health issue, particularly in low- and middle-income countries (LMICs). Researchers have committed to studying malnutrition (especially in children under the age of five) to address the nine malnutri
Externí odkaz:
https://doaj.org/article/9ea0c6b4a765422499442473c9e6d73c
Publikováno v:
BMC Medical Research Methodology, Vol 23, Iss 1, Pp 1-25 (2023)
Abstract Background Using four case studies, we aim to provide practical guidance and recommendations for the analysis of cluster randomised controlled trials. Methods Four modelling approaches (Generalized Linear Mixed Models with parameters estimat
Externí odkaz:
https://doaj.org/article/85d886ca68a64040971c041a14a2cb31
Autor:
Gavin Giovannoni, Stephen J Walters, David Paling, Olga Ciccarelli, Cindy Cooper, Eli Silber, Martin Duddy, Hannah Hunter, David Hunt, Basil Sharrack, Paul Gallagher, Ian Galea, Richard Nicholas, Annalena Venneri, Neil Robertson, Carolyn Young, Jeremy Hobart, David Rog, Ben Turner, Muhammad Saif, Azza Ismail, Gavin Brittain, John A Snowden, Diana Papaioannou, Alasdair J Coles, Gordon Mazibrada, Neil Scolding, Maruthi Vinjam, Matthew Bursnall, Claire Rice, Ian Pomeroy, Majid Kazmi, Esmaeil Nikfekr, Kim Orchard, Thushan de Silva, Jennifer Petrie, Elisa Roldan, Caroline Besley, Kate E M Duffy, Rachel Glover, Katie Hullock, Colette Beecher, Ian Gabriel, Charalampia Kyriakou, Andy Peniket, Paolo A Muraro, Amy Publicover, Andy Clark, Charles Crawley, Eleni Tholouli, Fran Kinsella, Gabriele De Luca, Jeff Davies, Jenny Byrne, Keith Campbell, Leonora Finisku, Simon Bulley, Vic Campbell
Publikováno v:
BMJ Open, Vol 14, Iss 2 (2024)
Introduction Autologous haematopoietic stem cell transplantation (aHSCT) is increasingly used as treatment for patients with active multiple sclerosis (MS), typically after failure of disease-modifying therapies (DMTs). A recent phase III trial, ‘M
Externí odkaz:
https://doaj.org/article/cef35258b9e74bbbaf15d925d8681e1d
Publikováno v:
Trials, Vol 24, Iss 1, Pp 1-11 (2023)
Abstract Background Adaptive clinical trials may use conditional power (CP) to make decisions at interim analyses, requiring assumptions about the treatment effect for remaining patients. It is critical that these assumptions are understood by those
Externí odkaz:
https://doaj.org/article/b54b1c36ff504e3baeda1656218f6692
Publikováno v:
Reproduction and Fertility, Vol 3, Iss 2, Pp 77-89 (2022)
Sperm motility varies between ejaculates from different men and from individual men. We studied normozoospermic and asthenozoospermic ejaculates after density-gradient centrifugation washing (DCG, 80/40%) and compared high- (80%) and low (40%)-motili
Externí odkaz:
https://doaj.org/article/e382abf5b99f404287cda9b314a53fe7
Publikováno v:
Trials, Vol 23, Iss 1, Pp 1-16 (2022)
Abstract Background In cluster randomised controlled trials (cRCTs), groups of individuals (rather than individuals) are randomised to minimise the risk of contamination and/or efficiently use limited resources or solve logistic and administrative pr
Externí odkaz:
https://doaj.org/article/83a2ce6f2f5642e9b79d9ecee576718b
Publikováno v:
Public Health in Practice, Vol 3, Iss , Pp 100229- (2022)
Objectives: This study aims to determine the prevalence of anaemia among children aged 6–59 months in all states of Nigeria, including the Federal Capital Territory (FCT), and to quantify the predicted probabilities by individual, household and are
Externí odkaz:
https://doaj.org/article/e128a4d7b50147c7ae1be9768b20dd6b
Publikováno v:
Trials, Vol 21, Iss 1, Pp 1-10 (2020)
Abstract Introduction Sample size calculations require assumptions regarding treatment response and variability. Incorrect assumptions can result in under- or overpowered trials, posing ethical concerns. Sample size re-estimation (SSR) methods invest
Externí odkaz:
https://doaj.org/article/dd90025b2b0c45c597962f3a19cc2ac5
Autor:
Katie Biggs, Daniel Hind, Rebecca Gossage-Worrall, Kirsty Sprange, David White, Jessica Wright, Robin Chatters, Katherine Berry, Diana Papaioannou, Mike Bradburn, Stephen J. Walters, Cindy Cooper
Publikováno v:
Trials, Vol 21, Iss 1, Pp 1-16 (2020)
Abstract Background Group interventions are interventions delivered to groups of people rather than to individuals and are used in healthcare for mental health recovery, behaviour change, peer support, self-management and/or health education. Evaluat
Externí odkaz:
https://doaj.org/article/a67241f2f5d046fe8b86038a402d4107
Autor:
Stephen J Walters, Richard M Jacques, Rebecca M Simpson, Rashida Ahmed, James Harper, Adya Ranjan, Isra Saeed
Publikováno v:
BMJ Open, Vol 12, Iss 2 (2022)
Externí odkaz:
https://doaj.org/article/d7a76d1d02e44b638aff625f723f2844