nMaster 2.2

nMaster is a software that incorporates sample size calculation(STATA, EpiInfo, nQuery, etc.), in terms of contents, each of use and the cost.
There is a growing recognition on the importance of sample size calculation and power analysis in research. When planning a study design, it is very imperative to consider how many participants are needed, therefore, sample size must be premeditated carefully to ensure that the research time, patient effort and support costs invested are not wasted. There are many standard statistical software and stand alone packages available in public domain (internet) for performing sample size/power calculations.