About: retrospective cohort

Premodifier: retrospective
Head noun: cohort

Same concepts
http://dbpedia.org/resource/Retrospective_cohort_study

Broader concepts

label	provenance	confidence
observational study	isap:116429831	0.492695

Narrower concepts

label	provenance	confidence
study design	isap:393741602	0.565870
study	isap:161239320	0.279312
design	isap:393741603	0.269967