Who We Are

Who We Are

SampleSizeShop.org is a website dedicated to helping scientists and researchers calculate accurate sample size and power in order to best achieve the goals of their studies.  We provide free access to the GLIMMPSE software for calculating sample size and power, tutorials related to sample size and power, and links to related sites and software.  Use of SampleSizeShop.org and the GLIMMPSE software is free.  The creation of this website and related programs and software has been made possible by support from the National Institutes of Health (NIH).

Version 3 Team Members

Alasdair Macleod (Software Engineer), Qian Li (Statistical Programmer), Michelle Zamperlini (Research Coordinator), Albert Ritzhaupt (Co-Investigator, Educational Technologist), Mildred Maldonado-Molina (Co-Investigator, Recruiter),  Jiang Bian (Co-Investigator, Software Architect), Elizabeth Litkowski (Software Manager)


Researchers do not often have access to the statistical tools needed to create a successful study.  Our goal at SampleSizeShop.org is to make accurate power and sample size outputs available to all scientists and researchers.  The GLIMMPSE software provides free, user friendly power and sample size analyses to assist researchers in creating the most successful study possible.  GLIMMPSE is available both online and as a free download.

In addition to the GLIMMPSE software and website, SampleSizeShop.org provides tutorials for calculating sample size and power in both written and video form, and has open forum for questions related to power and sample size analyses.  While we encourage the free use of our own GLIMMPSE software, our primary goal is the adoption of the most accurate methods for power and sample size analyses.