Health and Science
Statistical Associations
American Statistical Association (ASA)
International Biometric Society
International Biometric Society - ENAR
International Biometric Society - WNAR
The Society for Clinical Trials (SCT)
The International Association for Statistical Education (IASE)
International Statistical Institute (ISI)
Institute of Mathematical Statistics (IMS)
Free Sample Size/ Statistics Program Links*
Jon Shuster's SAS design and analysis programs
Dave Schoenfeld's sample size program
Knut Wittkowski's multivariate u-scores web server
Keith Muller's "Sample Size Shop" & other downloads
John Pezzullo's interactive statistics pages
Ralph O'Brien's SAS module for sample size
William Dupont's PS power and sample size program
On-Line Resources
*ACTStat does not warranty the information from the sites enlisted in this category