Sample size calculation for multicenter randomized trial: taking the center effect into account.

[1]  R. O’Neill,et al.  Multicentre trials: a US regulatory perspective , 2005, Statistical methods in medical research.

[2]  B. Giraudeau,et al.  The efficiency of transfusing high doses of platelets in hematologic patients with thrombocytopenia: results of a prospective, randomized, open, blinded end point (PROBE) study. , 2005, Blood.

[3]  S. Thompson,et al.  Clustering by health professional in individually randomised trials , 2005, BMJ : British Medical Journal.

[4]  A. Zhigljavsky,et al.  Estimation of the Treatment Difference in Multicenter Trials , 2004, Journal of biopharmaceutical statistics.

[5]  S. Julious Sample sizes for clinical trials with Normal data , 2004, Statistics in medicine.

[6]  Simon G Thompson,et al.  Allowing for imprecision of the intracluster correlation coefficient in the design of cluster randomized trials , 2004, Statistics in medicine.

[7]  G. Baron,et al.  Inefficacy of infliximab in primary Sjögren's syndrome: results of the randomized, controlled Trial of Remicade in Primary Sjögren's Syndrome (TRIPSS). , 2004, Arthritis and rheumatism.

[8]  B. Giraudeau,et al.  Epidural corticosteroid injections for sciatica: a randomised, double blind, controlled clinical trial , 2003, Annals of the rheumatic diseases.

[9]  Stratified experiments reexamined with emphasis on multicenter trials. , 2003, Controlled clinical trials.

[10]  Mirjam Moerbeek,et al.  A comparison between traditional methods and multilevel regression for the analysis of multicenter intervention studies. , 2003, Journal of clinical epidemiology.

[11]  Thomas Permutt Probability Models And Computational Models For Anova In Multicenter Clinical Trials , 2003, Journal of biopharmaceutical statistics.

[12]  O. Ukoumunne A comparison of confidence interval methods for the intraclass correlation coefficient in cluster randomized trials , 2002, Statistics in medicine.

[13]  Neil Klar,et al.  Sample size re‐estimation in cluster randomization trials , 2002, Statistics in medicine.

[14]  A. Localio,et al.  Adjustments for Center in Multicenter Studies: An Overview , 2001, Annals of Internal Medicine.

[15]  D. Moher,et al.  The CONSORT statement: revised recommendations for improving the quality of reports of parallel-group randomized trials. , 2001, Journal of the American Podiatric Medical Association.

[16]  D. Moher,et al.  The CONSORT statement: revised recommendations for improving the quality of reports of parallel-group randomised trials , 2001, The Lancet.

[17]  Helen Brown,et al.  Applied Mixed Models in Medicine , 2000, Technometrics.

[18]  P. Gallo CENTER-WEIGHTING ISSUES IN MULTICENTER CLINICAL TRIALS , 2000, Journal of biopharmaceutical statistics.

[19]  Zhengning Lin The Number of Centers in a Multicenter Clinical Study: Effects on Statistical Power , 2000 .

[20]  C. Viscoli,et al.  Stratified randomization for clinical trials. , 1999, Journal of clinical epidemiology.

[21]  S Senn,et al.  Some controversies in planning and analysing multi-centre trials. , 1998, Statistics in medicine.

[22]  D. Teather,et al.  A comparison of various estimators of a treatment difference for a multi-centre clinical trial. , 1998, Statistics in medicine.

[23]  David Machin,et al.  Sample Size Tables for Clinical Studies , 1997 .

[24]  P. Rao Variance components estimation : mixed models, methodologies and applications , 1997 .

[25]  N. L. Johnson,et al.  Continuous Univariate Distributions. , 1995 .

[26]  J. Fleiss,et al.  Analysis of data from multiclinic trials. , 1986, Controlled clinical trials.

[27]  H. Scheffé,et al.  The Analysis of Variance , 1960 .