It has long been recognized that sample size calculations for cluster randomized trials require consideration of the correlation between multiple observations within the same cluster. When ...

This is a web-based tool to calculate the required sample size for a Cluster Randomized Controlled Trial (CRCT) with two parallel groups (Treatment vs. Control). Calculates sample size based on ...

Pilot trials have a key role in preparing for definitive randomized trials, yet determining their sample size remains a common challenge. This article provides practical guidance, methods, and ...

Abstract: Cluster filtering is a kind of test selection technique, which saves human efforts for result inspection by reducing test size and finding maximum failures. Cluster sampling strategies play ...