Prenatal care
Inadequate care, n (%) 
Unadjusted OR 
Adjusted ORa
First PNC visit[13 wee
Unadjusted OR 
Adjusted ORb
No prenatal vitamin use
Unadjusted OR 
Adjusted ORb
Social behavior
Recent smoking, n (%) 
Unadjusted OR 
Adjusted ORc
Recent drinking, n (%) 
Unadjusted OR 
Adjusted ORb
Recent drug use, n (%) 
Unadjusted OR 
Adjusted ORb
Mental health
Depressed, n (%) 
Unadjusted OR 
Adjusted OR