The inefficiency induced by between-cluster variation in cluster randomized (CR) trials can be reduced by implementing a crossover (CO) design. In a simple CO trial, each subject receives each ...
The aim of this study is to assess the effectiveness of a brief risk factor screening followed by a risk tailored intervention for patients consulting for acute to subacute low back pain in primary ...
Clinical trials are most commonly associated with drugs and devices, but there are notable examples of trials that involve health policy. Many such trials test innovations in the delivery of services, ...
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