Case-cohort designs combine the efficiency of nested case-control studies with the broader inference of full cohort analyses by selecting all individuals who experience an event (cases) together with ...

To explore the relationship between serum folic acid (FA) or Vitamin B12 (VB12) and elevated BP in children and adolescents. Both a nested case control and a cohort study were designed to explore the ...

As biomarker studies employ increasingly complex and expensive genomics and other correlative methods, it is increasingly important to rigorously design these studies and analyze the downstream ...