Ryan D Burns, Timothy A Brusseau, James C Hannon
Effect of a Comprehensive School Physical Activity Program on School Day Step Counts in Children
Journal of physical activity & health
sought analyse variation incidence patent ductus arteriosus three recent time points characterise ductal ligation practices preterm infants united states adjusting demographic morbidity factors using kids inpatient database 2003 2006 2009 identified infants born 32 weeks gestation international classification diseases ninth revision diagnosis patent ductus arteriosus ligation code examined patient hospital characteristics identified patient hospital variables associated ligation 182610 preterm births 30714 discharges included patent ductus arteriosus diagnosis rate patent ductus arteriosus diagnosis increased 14 2003 21 2009 p0001 total 4181 ligations performed overall ligation rate 14 ligation rate infants born 28 weeks gestation 20 overall increasing 18 2003 21 2009 p0001 ligation rate varied state 428 ligation associated earlier gestational age associated diagnoses hospital type teaching hospital status region p0001 rates patent ductus arteriosus diagnosis ligation increased recent years variation exists practice patent ductus arteriosus ligation influenced patient nonpatient factors