Images
nQuery is now the world’s most trusted sample size and power analysis software.
In 2018, 91% of organizations with FDA approved clinical trials used nQuery as their sample size calculator. It is used by Biostatisticians of all levels of expertise.
Created by sample size experts, nQuery boasts an extensive list of easy-to-use but powerful features for sample size calculation and power analysis.
Customer Reviews
Jeff D.
Advanced user of nQueryThis software handles every design of importance to me. I am a consulting statistician in the pharmaceutical industry and I have a vast variety of study designs that I must provide sample size analysis for. NQuery walks me through the issues and provides excellent guidance as well as references.
Some advice appears when you hover over a specific part of a table. I have missed some advice at times. It would be an improvement to have warning boxes or other methods of providing dynamic advice.
Get this product. It has everything you need. I have been using it since the company has been in business.
Group Sequential Design ; differences in proportions ; differences in survival curves; differences in continuous variables; bioequivalence; noninferiority.
