• About nQuery from Statsols

    About Us

    nQuery - Powering Sample Size. The world's most trusted sample size calculation software


At Statsols (The provider of nQuery), we have been leading through statistical innovation for over 20 years. nQuery is now the world's most trusted sample size and power analysis software. 

In 2017, 90% 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.


Founded in 1984, our business began as a subsidiary of Californian software company, BMDP Statistical Software Inc. As the BMDP subsidiary, we grew and developed overseas markets for BMDP and then later, through a management buy-out, formed the now independent company, Statistical Solutions Ltd.

Today, Statsols is an international company, and the proud owner, developer and provider of highly acclaimed statistical analysis software nQuery.

We have a U.S. subsidiary in Boston, Massachusetts, as well as a network of dedicated and devoted partners throughout other regions, including Japan, Australia, China, Germany and France.

nQuery in Numbers

  • nQuery has been enabling researchers calculate sample size for regulatory approval for over 20 years
  • We have customers in over 100 countries
  • Over 50,000 registered software users
  • 45 of top 50 Pharma companies are Statsols customers
  • 90% of organizations with clinical trials approved by FDA in 2017 used nQuery to calculate sample size

Meet the Team


Mary Byrne

President & CEO

Brendan Nyhan

Chief Operating Officer


Helen Murphy

Director of Corporate Planning


Kevin Sievewright

Finance Director

Christine Carey

Product Manager

Ronan Fitzpatrick

 Head of Statistics

Eimear Keyes


Diana Scriven

 Customer Success Manager

David Lemoine

Lead Developer

Steven Keady

Senior Developer

Cathal O Gorman

Software Developer

Caroline Costello

 Client Services Manager

Liam Burke

 Digital Marketing Manager

Louise Byrne

Business Development Executive

Sorcha Conaghan

Customer Service Representative

David Cleary

Business Development Executive

John McConnell

Senior Data Scientist

Matt Lamprey

Data Analyst

Garry McCarthy

 Creative Advisor