Results 251 to 260 of about 44,113 (283)

Protocol for a non-randomised stepped-wedge pilot trial for 'Nra:gi Ya:yun' (very good foods): a co-designed type 2 diabetes and metabolic syndrome initiative with Aboriginal people living on Ngarrindjeri Ruwe. [PDF]

BMJ Open
Omodei-James S, Kropinyeri R, Wilson S, Cameron D, Mendham AE, Kartinyeri N, Scriven T, Wingard S, Kerrigan C, Spaeth B, Stranks SN, Kaambwa B, Wilson A, Ullah S, Denton J, McLaren K, Mittinty M, Otieno L, Henderson P, Sallows G, Mazonka P, Worley P, Ryder C.   +22 more
europepmc   +1 more source

Community and Academic Synergy for Cancer Survivorship Care Delivery Enhancement (Project CASCADE): a study protocol for a pragmatic, stepped-wedge, cluster-randomized trial in Texas primary care community health centers. [PDF]

BMC Prim Care
Millett ME, Malthaner LQ, McCallister K, Craig DW, Eary R, Valerio-Shewmaker MA, Shay LA, Rajan SS, Ma HY, Ghosh S, Crabtree BF, Lee SJC, Balasubramanian BA.   +12 more
europepmc   +1 more source

Analysis of Cohort Stepped Wedge Cluster-Randomized Trials With Nonignorable Dropout via Joint Modeling. [PDF]

Stat Med
Gasparini A, Crowther MJ, Hoogendijk EO, Li F, Harhay MO.   +4 more
europepmc   +1 more source

Implementation of shared decision making in rheumatoid arthritis: study protocol for RAiSeD (Rheumatoid Arthritis Shared Decision Making) stepped wedge, cluster-randomized trial. [PDF]

Trials
Barton JL, Niederhausen M, Tuepker A, Schmajuk G, Baker J, Lovejoy TI, Morasco BJ, Kunneman M, Scholl I.   +8 more
europepmc   +1 more source

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Random effect misspecification in stepped wedge designs

Clinical Trials, 2022
Stepped wedge cluster randomized trials are often analysed using linear mixed effects models that may include random effects for cluster, time and/or treatment. We investigate the impact of misspecification of the random effects structure of the model. Specifically, we considered two cases of misspecification of the random effects in a cross-sectional
Emily C Voldal, Fan Xia, Avi Kenny, Patrick J Heagerty, James P Hughes   +4 more
openaire   +2 more sources

Step-Wedge Sensitometry

Radiology, 1978
An aluminum step-wedge filter placed far from the film cassette provides the constant variation of subject contrast required for quantitative sensitometry while virtually eliminating scatter radiations. Attenuation curves made with this configuration are almost exponentially linear.
J, Hale, P, Bloch
openaire   +2 more sources

Bayesian optimal stepped wedge design

Biometrical Journal, 2023
AbstractRecently, there has been a growing interest in designing cluster trials using stepped wedge design (SWD). An SWD is a type of cluster–crossover design in which clusters of individuals are randomized unidirectional from a control to an intervention at certain time points.
openaire   +2 more sources

Stepped Wedge Cluster Randomized Trials: A Methodological Overview

World Neurosurgery, 2022
Stepped wedge cluster randomized trials enable rigorous evaluations of health intervention programs in pragmatic settings. In the present study, we aimed to update neurosurgeon scientists on the design of stepped wedge randomized trials.We have presented an overview of recent methodological developments for stepped wedge designs and included an update ...
Fan Li, Rui Wang
openaire   +2 more sources

Optimal stepped wedge designs

Statistics & Probability Letters, 2015
Stepped wedge randomised trials are increasingly popular. Here we derive the optimal design for a fixed number of periods; this does not allocate an equal number of cluster units to each treatment sequence as might otherwise have been expected.
Jock Lawrie, John B. Carlin, Andrew B. Forbes   +2 more
openaire   +1 more source