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Table 1 Neonate demographics

From: Quality of EHR data extractions for studies of preterm birth in a tertiary care center: guidelines for obtaining reliable data

Sex  
 Male 55.6 %
 Female 44.4 %
Ethnicity  
 Non-Hispanic 91.7 %
 Hispanic 6.3 %
 Unknown/Not reported 2.0 %
Race  
 White 85.4 %
 African American 6.0 %
 Asian 1.9 %
 American Indian or Native Alaskan 1.1 %
 Other or more than one race 4.2 %
 Unknown/Not reported 0.9 %
GA (weeks)  
  < 32 44.2 %
 32–36 37.7 %
 ≥37 18.1 %
 Mean 32.2
 Range 22–42
Birthweights (grams)  
 Range 328–5,006
 Mean 1,989
Patent ductus arteriosus (PDA)  
 % of total Neonates 20.4 %
  < 32 weeks 87.6 %
 32–36 weeks 12.4 %
  ≥ 37 weeks 0.0 %
  1. Demographics of the 1,772 neonates enrolled in Iowa’s Prematurity study during the years of 2001–2011