Concept: surveillance
Label (en): observational study
Description (en): study that draws inferences from a sample to a population, in cases where the independent variable is not under the control of the researcher because of ethical concerns or logistical constraints
Also known as (en): surveillance study, observational studies, observation study
Label (es): estudio observacional
Description (es): estudios de carácter estadístico y demográficos
Label (ca): observació d'estudi
Also known as (ca): estudi observacional
Instance of: study type