nQuery Advisor 7.0

Determination of the appropriate sample size is a crucial part of study design. The sample size must be chosen correctly to allow a study to arrive at valid conclusions for any given scientific question. A study that is too small may produce inconclusive results, while a study that is too large will waste scarce resources. 

nQuery Advisor assists you in choosing an appropriate sample size for your research studies. nQuery Advisor also helps you to provide the standard deviation and effect size information which you need to make sample size and power computations. 

The nQuery Advisor program is designed by professional statisticians with many years of experience in study design. They have created the program so that research investigators, statisticians, data analysts and clinical researchers can compute appropriate sample sizes easily and efficiently. 

nQuery Advisor's intuitive spreadsheet-style tables and editable plots make it very easy to evaluate a range of different scenarios so that you can optimize your budgetary requirements. It even generates a sample size justification statement that can be incorporated into your final report. 

With detailed guide-cards to assist you with every table, assistance in computing appropriate standard deviation and effect sizes and comprehensive literature references and formulas, nQuery Advisor provides unrivalled guidance and support though the sample size calculation process. 

nQuery Advisor is used extensively throughout many of the world's leading pharmaceutical and biotechnology companies and importantly is also widely used at FDA and other leading regulatory agencies and research centers. As choosing the correct and most appropriate sample size is a key element in the design of a study, nQuery Advisor is definitely worth a closer look. 

Now nQuery Advisor can create the randomization list for your study

Because generating randomization lists or schedules is an essential part of most clinical trials, nQuery Advisor offers a menu for the creation of randomization lists for basic, advanced and complex designs. In just a few minutes, you can easily specify and obtain a randomization list for your study. Importantly, the automated option for mixed block sizes provides assistance in maintaining the double blind.


 

Use nQuery Advisor's Study Goal and Design Box to select the correct table for your study.





Quickly evaluate a range of scenarios with nQuery Advisor's tables and plots. 



nQuery Advisor writes up the sample size decision. This unique feature makes it easy to report the sample size decision in the correct language and format.