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
type af videnskabeligt studie, hvor undersøgelsens subjekter ikke påvirkes af forskeren (da)
estudios de carácter estadístico y demográficos (es)
raziskava, ki iz vzorca sklepa na populacijo, kadar neodvisna spremenljivka ni pod nadzorom raziskovalca zaradi etičnih pomislekov ali logističnih omejitev (sl)
undersökning och observation under en längre tid (sv)
patientenbezogene Datenerhebung im Gesundheitsbereich (de)
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 (en)