Abstract:IMPORTANCE Preterm and postterm deliveries have declined since 2005 in the United States, but the association between these changes and neonatal mortality remains unknown. OBJECTIVE To estimate changes in the gestational age distribution among spontaneous and clinician-initiated deliveries between 2006 and 2013 and associated changes in neonatal mortality. DESIGN, SETTING, AND PARTICIPANTS A retrospective cohort analysis was conducted of 22 million singleton live births without major malformations in the Unite… Show more
“…In the United States, neonatal survival (during the first 28 days) among singleton live births at 20-27 weeks' gestational age without malformations increased from 37% in 2006 to 50% in 2013. 28 In parallel, rates of stillbirths increased. 29 The present study showed a survival rate of 77% among all live-born infants at 22-26 weeks' gestational age in 2014-2016, and the stillbirth rate was found to be significantly lower than the rate reported in the rest of Europe.…”
Since 2004Since -2007, national guidelines and recommendations have been developed for the management of extremely preterm births in Sweden. If and how more uniform management has affected infant survival is unknown.
“…In the United States, neonatal survival (during the first 28 days) among singleton live births at 20-27 weeks' gestational age without malformations increased from 37% in 2006 to 50% in 2013. 28 In parallel, rates of stillbirths increased. 29 The present study showed a survival rate of 77% among all live-born infants at 22-26 weeks' gestational age in 2014-2016, and the stillbirth rate was found to be significantly lower than the rate reported in the rest of Europe.…”
Since 2004Since -2007, national guidelines and recommendations have been developed for the management of extremely preterm births in Sweden. If and how more uniform management has affected infant survival is unknown.
“…For preterm birth, this question is somewhat more complex as indicated earlier delivery is a strategy used to reduce risks of stillbirth or other adverse perinatal outcomes associated with maternal age. In the US, clinician‐indicated deliveries represent 41% of all preterm births . Kaiser et al find that clinician‐indicated births are responsible for the increase in risk of preterm birth associated with older maternal age.…”
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confidence: 99%
“…In the US, clinician-indicated deliveries represent 41% of all preterm births. 10 Kaiser et al find that clinician-indicated births are responsible for the increase in risk of preterm birth associated with older maternal age.…”
“…Fully saturated models were developed to evaluate whether percentage change across HRR and demographics were statistically significant using generalized estimation equations with normal distributions and identity linkage. 23 Quantile regression models were used to calculate the difference and 95% confidence interval (CI) of median travel distance between the years 2000 and 2014 to test whether the median travel distance was statistically different between the years.…”
Section: New York State Hrrs Stratified By Population Densitymentioning
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