Many stepped wedge trials (SWTs) are analysed by using a mixed-effect model with a random intercept and fixed effects for the intervention and time periods (referred to here as the standard model). However, it is not known whether this model is robust to misspecification. We simulated SWTs with three groups of clusters and two time periods; one group received the intervention during the first period and two groups in the second period. We simulated period and intervention effects that were either common-to-all or varied-between clusters. Data were analysed with the standard model or with additional random effects for period effect or intervention effect. In a second simulation study, we explored the weight given to within-cluster comparison...
OBJECTIVES: Within epidemiology, a stepped wedge trial design (i.e., a one-way crossover trial in wh...
Background Stepped wedge cluster randomised trials introduce interventions to groups of clusters in...
Background A stepped wedge cluster randomised trial (SWCRT) is a multicentred study which allows an ...
Many stepped wedge trials (SWTs) are analysed by using a mixed-effect model with a random intercept ...
Many stepped wedge trials (SWTs) are analysed using a mixed-effect model with a random intercept and...
In stepped-wedge trials (SWTs), the intervention is rolled out in a random order over more than 1 ti...
Despite their growing use, there is limited literature on the design and analysis of stepped-wedge t...
BACKGROUND: Stepped wedge cluster randomised trials frequently involve a relatively small number of ...
Background: Stepped wedge cluster randomised trials frequently involve a relatively small number of ...
A stepped wedge trial is a type of cluster randomized trial with unidirectional crossover from contr...
Stepped-wedge cluster randomized trials (SW-CRTs) are typically analyzed using mixed effects models....
Background: The stepped wedge cluster randomised trial (SW-CRT) is increasingly being used to evalua...
Generalised estimating equations with the sandwich standard-error estimator provide a promising meth...
BACKGROUND: Stepped wedge cluster randomised trials introduce interventions to groups of clusters in...
BACKGROUND:A stepped wedge cluster randomised trial (SWCRT) is a multicentred study which allows an ...
OBJECTIVES: Within epidemiology, a stepped wedge trial design (i.e., a one-way crossover trial in wh...
Background Stepped wedge cluster randomised trials introduce interventions to groups of clusters in...
Background A stepped wedge cluster randomised trial (SWCRT) is a multicentred study which allows an ...
Many stepped wedge trials (SWTs) are analysed by using a mixed-effect model with a random intercept ...
Many stepped wedge trials (SWTs) are analysed using a mixed-effect model with a random intercept and...
In stepped-wedge trials (SWTs), the intervention is rolled out in a random order over more than 1 ti...
Despite their growing use, there is limited literature on the design and analysis of stepped-wedge t...
BACKGROUND: Stepped wedge cluster randomised trials frequently involve a relatively small number of ...
Background: Stepped wedge cluster randomised trials frequently involve a relatively small number of ...
A stepped wedge trial is a type of cluster randomized trial with unidirectional crossover from contr...
Stepped-wedge cluster randomized trials (SW-CRTs) are typically analyzed using mixed effects models....
Background: The stepped wedge cluster randomised trial (SW-CRT) is increasingly being used to evalua...
Generalised estimating equations with the sandwich standard-error estimator provide a promising meth...
BACKGROUND: Stepped wedge cluster randomised trials introduce interventions to groups of clusters in...
BACKGROUND:A stepped wedge cluster randomised trial (SWCRT) is a multicentred study which allows an ...
OBJECTIVES: Within epidemiology, a stepped wedge trial design (i.e., a one-way crossover trial in wh...
Background Stepped wedge cluster randomised trials introduce interventions to groups of clusters in...
Background A stepped wedge cluster randomised trial (SWCRT) is a multicentred study which allows an ...