I provide statistical consultation for various clinical programs that involve protocol development, randomization, assessments of sample size calculations, efficacy evaluations and study data review. I like them all to use the same software. Most researchers I work with are already familiar and skilled with nQuery. I like that trust and time saving this software brings.

The range of procedures. Their website says 1000+ sample size scenarios, and I have to say while working internal and externally with this tool for on our protocol, we have been able to test and validate any of our adaptive trial designs so far. I am a long time user so was using nQuery as my sample size software tool before it had Bayesian and Adaptive capabilities. So I really like the addition of them in the last few years.

Using the users manual and with a basic knowledge of statistics I am able to very easily able to calculate sample size for planning and conducting clinical studies.