cluster randomised trial造句

例句与造句

1. In the context of a cluster randomised trial, the stepped-wedge design involves the collection of observations at a baseline period in which no clusters are exposed to the intervention.
2. For a cluster randomised trial with " m " observations in each cluster and intra-cluster correlation of \ rho, the design effect . " D " eff, is given by:
3. It's difficult to find cluster randomised trial in a sentence. 用cluster randomised trial造句挺难的