About: age at first birth

Head noun: age
Postmodifier: at first birth

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

Broader concepts

label	provenance	confidence
other reproductive factor	isap:214521593	0.654635
reproductive factor	isap:214521853	0.620880
risk factor	isap:214521987	0.470884
factor	isap:214521742	0.253489

Narrower concepts

label	provenance	confidence