n4Studies

Sample Size, Power, Calculation, Statistics, Research, OR., RR., Epidemiology

Ease to calculate the sample size with n4Studies.

n4Studies makes it easy to calculate the sample size and the power of a study. It is a free App and comes with ABSOLUTELY NO WARRANTY. However, It can help to learn and find the ways to calculate the sample size and power of the study in minutes.

Key features:

• Calculate the sample size for estimating an infinite population mean, finite population mean, infinite population proportion and finite population proportion

• Calculate the sample size for comparing two population means and two population proportions

• Calculate the sample size for the Case-Control for study, Matched Case-Control study, Cohort study, Randomized Controlled Trial, Non-inferiority, Superiority and Equivalence trial.

• Calculate the power of a study for comparing two population means and two population proportions

• Calculate the power of a study for the Case-Control for study, Matched Case-Control study, Cohort study, Randomized Controlled Trial, Non-inferiority, Superiority and Equivalence trial.

• Calculate a test performance (sensitivity, specificity, positive and negative predictive value, positive and negative likelihood ratio, and etc.)

• You can send a result via Email to your colleague