Clustering in surgical trials - database of intracluster correlations

The effectiveness and cost-effectiveness of minimal access surgery amongst people with gastro-oesophageal reflux disease – a UK collaborative study. The REFLUX trial

(2014) A Grant et al.   HEALTH TECHNOLOGY ASSESSMENT

Comparing methods to estimate treatment effects on a continuous outcome in multicentre randomized controlled trials: A simulation study

(2011) Rong Chu et al.   BMC Medical Research Methodology

Efficacy of stapler versus hand-sewn closure after distal pancreatectomy (DISPACT): a randomised, controlled multicentre trial

(2011) Markus K Diener et al.   LANCET

Provider and Center Effect in Multicenter Randomized Controlled Trials of Surgical Specialties: An Analysis on Patient-level Data

(2009) David J. Biau et al.   ANNALS OF SURGERY

Interrupted or Continuous Slowly Absorbable Sutures For Closure of Primary Elective Midline Abdominal Incisions

(2009) Christoph M. Seiler et al.   ANNALS OF SURGERY

Design effect in multicenter studies: gain or loss of power?

(2009) Emilie Vierron et al.   BMC Medical Research Methodology

The Knee Arthroplasty Trial (KAT)

(2009)   JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME

Therapist variation within randomised trials of psychotherapy: implications for precision, internal and external validity

(2009) Rebecca Walwyn et al.   STATISTICAL METHODS IN MEDICAL RESEARCH

Letter to the Editor Re: Orthopaedic Surgeons Prefer to Participate in Expertise-based Randomized Trials

(2008) David J. Biau et al.   CLINICAL ORTHOPAEDICS AND RELATED RESEARCH

The account for provider and center effects in multicenter interventional and surgical randomized controlled trials is in need of improvement: a review

(2008) David J. Biau et al.   JOURNAL OF CLINICAL EPIDEMIOLOGY

Statistical issues in the design and analysis of expertise-based randomized clinical trials

(2008) S. D. Walter et al.   STATISTICS IN MEDICINE