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About Us

Providing the world's most trusted sample size calculation software

About the Company

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Statsols  - The provider of nQuery Sample Size Software - has been leading the market through statistical innovation for over 20 years. nQuery is one of the world's most trusted sample size and power analysis software packages.

In 2018, 91% of organizations with FDA approved clinical trials used nQuery for their sample size calculation. 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 sample size and power analysis software -nQuery.

Headquartered in Cork, Ireland, we also have a U.S. subsidiary in Boston, Massachusetts in addition to 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

nQuery in over 100 Countries

nQuery is used by customers in over 100 countries worldwide

Over 50,000 Registered Users


Over 50,000 registered software users in over 100 countries

45/50 Top Companies

45 of top 50 Pharma companies are Statsols customers

90% of FDA Trials Approved

90% of organizations with clinical trials approved by FDA in 2017 used nQuery

History of Statsols & nQuery


In the beginning...

BMDP Statistical  Software established it’s European Subsidiary...SSL Ltd.



Subsidiary becomes independent company Statsols and nQuery Version 1.0 Developed by Janet Elashoff and Distributed by Statsols.


Expanded Functionality

nQuery 2.0 - Doubled the number of tables and introduced functionality for confidence intervals, equivalence, repeated measures, crossover designs and nonparametric tests.


Further Iterations

nQuery 3.0, 4.0, 5.0 & 6.0 - greatly expanded the plotting functionality and added tables for exact test for proportions, one-sided and TOST Equivalence tests.


Enter nTerim!

nTerim 1.0 developed and released by Statsols as a companion product to nQuery to calculate sample size for group sequential designs.


nQuery & nTerim Combine

nQuery and nTerim combined into one product under the direction of Statsols.


Statsols present to FDA

Statsols invited to FDA to present seminar on sample size calculation to FDA statisticians and reviewers.


Extended Capabilities

nQuery extends its offering from classical trial designs to cover bayesian analysis and adaptive trials.

Meet the Team


Mary Byrne

President & CEO

Brendan Nyhan

Chief Operating Officer

Helen Murphy

Director of Corporate Planning

Kevin Sievewright

Finance Director
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Christine Carey

Product Manager

Ronan Fitzpatrick

Head of Statistics
Brian Fox

Brian Fox

Research Statistician

David Lemoine

Lead Developer
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Steven Keady

Senior Developer
Cathal O'Gorman

Cathal O'Gorman

Software Developer

Diana Scriven

Customer Success Manager

Caroline Costello

Client Services Manager

Liam Burke

Digital Marketing Manager
Sorcha Conaghan

Sorcha Conaghan

Customer Service Representative
David Cleary

David Cleary

Business Development Executive

Layla Tobin

Sales Support

Join the team

We are always looking to grow our team.

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