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