All of the studies were cluster randomized trials; the unit of randomization was either the GP or the practice.
This is a stratified cluster randomized study, with the physician as the unit of randomization.
Intervention arm assignment was conducted using a 4 × 4 blocked randomized design, with the participant as the unit of randomization.
The study is a cluster randomized intervention trial with an institution as the unit of randomization.
The study was a pragmatic, cluster randomized trial, with the diabetes clinic as the unit of randomization.
The study is a randomized controlled trial with general practices as the unit of randomization and analysis.
A two-arm cluster-randomized controlled trial (RCT), with worksites as the unit of randomization, will be conducted in 16 worksites located in Victoria, Australia.
This study used a randomized experimental design with the CCOP component site as the unit of randomization.
The study is a (prospective) cluster-randomized, open, two-armed intervention study with the GP as the unit of randomization.
Schools were the unit of randomization.
This article discusses issues to be considered by nurse researchers when groups should be used as the unit of randomization.
