Three Interacting Single Nucleotide Polymorphisms (SNPs) and the Risk of Preterm Birth in Black Families

Exclusion Criteria

• •Mother (or Father identified on the birth certificate application) refuses to sign informed consent.
• •Mother (or Father identified on the birth certificate application) does not speak English.
• •Father, identified on the birth certificate application, objects to infant's participation.
• •Husband is not the father named on the birth certificate application.
• •Mother (or Father, if named on the birth certificate application) is less than 18 years of age.
• •Mother fails to identify her ethnic group as Black or African American on the birth certificate application.
• •Mother is cognitively impaired as a result of receiving narcotic analgesia within four hours of the time the research is explained, consent explained, or the interview is conducted.
• •Mother is documented to be cognitively impaired by her physician in the medical record.
• •Father appears to be cognitively impaired at the time the research is explained, consent explained, or the interview is conducted.
• •Mother or infant has a history of blood transfusion in the last six months.
• •Mother had assisted reproduction.
• •Maternal surgical procedures during pregnancy, to include cerclage.
• •Mother has uterine abnormalities.
• •History of trauma prior to the onset of labor.
• •Multiple gestation.
• •Infant has major anomalies (cyanotic congenital heart disease, gastroschisis, omphalocele, diaphragmatic hernia or other major gastrointestinal anomalies, major neurological injury or anomaly, or multiple congenital anomalies).
• •Mother has major anomalies (cyanotic congenital heart disease, gastroschisis, omphalocele, diaphragmatic hernia or other major gastrointestinal anomalies, major neurological injury or anomaly, or multiple congenital anomalies).
• •Infant has documented chromosomal anomalies.
• •Mother has documented chromosomal anomalies.