title: A wise (measurement) budget includes both increased precision and large sample size.
authors: Medical Research Council Epidemiology Unit, Institute of Metabolic Science, Addenbrookes Hospital, Cambridge, UK.
authors: Ulf
authors: U
authors: Ekelund
authors: Soren
authors: S
authors: Brage
mesh_terms: D006801:Humans; D008991:Monitoring, Physiologic / Q000191:economics* / Q000379:methods*; D009043:Motor Activity / Q000502:physiology*; D012107:Research Design