nQuery

Wide range of procedures: Many users have found the wide range of procedures available for sample size determination in NQuery to be very helpful. Some reviewers specifically mentioned that this feature is valuable, especially in their role as consulting statisticians in the pharmaceutical industry. The availability of multiple procedures allows users to choose the most appropriate method for their specific needs.

Flexibility in assumptions: Several users have highlighted the large number of options in NQuery for designating assumptions, such as equal or unequal variance. This flexibility has been appreciated by reviewers, particularly those involved in protocol development and clinical research. Being able to customize and adjust assumptions according to their study requirements adds value to the software.

Assistants for estimation and conversion: Reviewers have mentioned that they find the assistants in NQuery extremely useful. These assistants help estimate standard deviation and convert parameters, making it easier for users to calculate sample sizes for clinical studies. The presence of these assistants contributes to the overall ease of use and efficiency of the software.