Results 31 to 40 of about 177,882 (303)

Preventing Bias in Cluster Randomised Trials

PLoS Medicine, 2009
Bruno Giraudeau and Philippe Ravaud discuss the difficulties in preventing selection bias and applying intention-to-treat analysis in cluster randomized trials, and propose some solutions.
Giraudeau, Bruno, Ravaud, Philippe
openaire   +4 more sources

Educational films for improving screening and self-management of gestational diabetes in India and Uganda (GUIDES): study protocol for a cluster-randomised controlled trial

Trials, 2021
Background The prevalence of gestational diabetes mellitus (GDM) is rising rapidly in many low- and middle-income countries (LMICs). Most women with GDM in LMICs are undiagnosed and/or inadequately managed due to a lack of knowledge and skills about GDM ...
Laura L. Oakley, Deepa R, Arthur Namara, Biswamitra Sahu, Iliatha Papachristou Nadal, Yamuna Ana, Helen Coombe, Eugene Oteng-Ntim, Janet Seeley, Moffat Nyirenda, Giridhar Babu, Sanjay Kinra   +11 more
doaj   +1 more source

Step-wedge cluster-randomised community-based trials: An application to the study of the impact of community health insurance [PDF]

, 2008
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work ...
Becher, H, Bridger, JM, De Allegri, M, Dong, H, Gbangou, A, Kouyaté, B, Kynast-Wolf, G, Mansmann, U, Pokhrel, S, Sanon, M, Sauerborn, R   +10 more
core   +3 more sources

The impact of varying cluster size in cross-sectional stepped-wedge cluster randomised trials

BMC Medical Research Methodology, 2019
Background Cluster randomised trials with unequal sized clusters often have lower precision than with clusters of equal size. To allow for this, sample sizes are inflated by a modified version of the design effect for clustering.
James Thomas Martin, Karla Hemming, Alan Girling   +2 more
doaj   +1 more source

Update to a protocol for a feasibility cluster randomised controlled trial of a peer-led school-based intervention to increase the physical activity of adolescent girls (PLAN-A) [PDF]

, 2016
BACKGROUND: Physical activity levels are low amongst adolescent girls, and this population faces specific barriers to being active. Peer influences on health behaviours are important in adolescence, and peer-led interventions might hold promise to change
Banfield, Kate, Blair, Pete, Campbell, Rona, Edwards, Mark, Garfield, Kirsty, Hollingworth, William, Jago, Russ, Kadir, Bryar, Kipping, Ruth, Lyons, Ronan, Sebire, Simon   +10 more
core   +1 more source

Vocational rehabilitation in early psychosis: cluster randomised trial [PDF]

British Journal of Psychiatry, 2014
BackgroundIndividual placement and support (IPS) is effective in helping patients return to work but is poorly implemented because of clinical ambivalence and fears of relapse.AimsTo assess whether a motivational intervention (motivational interviewing) directed at clinical staff to address ambivalence about employment improved patients' occupational ...
Craig, Tom, Shepherd, Geoff, Rinaldi, Miles, Smith, Jo, Carr, Sarah, Preston, Fay, Singh, Swaran   +6 more
openaire   +3 more sources

Glaucoma case finding: a cluster-randomised intervention trial [PDF]

Eye, 2004
To assess the effect of an intervention comprising training in optic disc assessment, explicit referral criteria and ophthalmologist feedback on referred patients, on the number of optometrist referrals for suspected glaucoma seen at a referral site and the positive predictive value of those referrals.Optometric practices routinely referring to the ...
J, Theodossiades, I, Murdoch, S, Cousens
openaire   +2 more sources

An educational intervention to prevent overweight in pre-school years: a cluster randomised trial with a focus on disadvantaged families

BMC Public Health, 2019
Background Early prevention is a promising strategy for reducing obesity in childhood, and Early Years settings are ideal venues for interventions. This work evaluated an educational intervention with the primary aim of preventing overweight and obesity ...
Alison Hodgkinson, Janice Abbott, Margaret A. Hurley, Nicola Lowe, Pamela Qualter   +4 more
doaj   +1 more source

Implementation of the patient version of the evidence-based (S3) guideline for psychosocial interventions for patients with severe mental illness (IMPPETUS): study protocol for a cluster randomised controlled trial

Trials, 2020
Background The German guideline on psychosocial interventions for people with severe mental disorders recommends a broad spectrum of evidence-based treatments.
Johanna Breilmann, Reinhold Kilian, Steffi G. Riedel-Heller, Uta Gühne, Alkomiet Hasan, Peter Falkai, Andreas Allgöwer, Rainer Muche, Thomas Becker, Klemens Ajayi, Peter Brieger, Karel Frasch, Stephan Heres, Markus Jäger, Andreas Küthmann, Albert Putzhammer, Max Schmauß, Bertram Schneeweiß, Michael Schwarz, Markus Kösters   +19 more
doaj   +1 more source

A cluster-randomised, non-inferiority trial of the impact of a two-dose compared to three-dose schedule of pneumococcal conjugate vaccination in rural Gambia: the PVS trial

Trials, 2022
Background Pneumococcal conjugate vaccines (PCV) effectively prevent pneumococcal disease but the global impact of pneumococcal vaccination is hampered by the cost of PCV.
Grant A. Mackenzie, Isaac Osei, Rasheed Salaudeen, Ilias Hossain, Benjamin Young, Ousman Secka, Umberto D’Alessandro, Arto A. Palmu, Jukka Jokinen, Jason Hinds, Stefan Flasche, Kim Mulholland, Cattram Nguyen, Brian Greenwood   +13 more
doaj   +1 more source