Journal of the Royal Statistical Society Series A (General) · 1965 · 566 citations · 0 references
Public HealthBiostatisticsEpidemiologic MethodsEpidemiologyPopulation StudiesCohort StudiesObservational StudiesSampling MethodsStatistical AnalysisStudy DesignStudy PlanningObservation PlanningObservational MethodologyObservational Research DesignObservational Study AnalysisStudy Population Definition