Optimal maternal and neonatal outcomes and associated hospital characteristics

Birth. 2019 Jun;46(2):289-299. doi: 10.1111/birt.12400. Epub 2018 Sep 24.

Abstract

Background: This study aims to examine hospital variation in both maternal and neonatal morbidities and identify institutional characteristics associated with hospital performance in a combined measure of maternal and neonatal outcomes.

Methods: Using the California Linked Birth File containing data from birth certificate and hospital discharge records, we identified 1 322 713 term births delivered at 248 hospitals during 2010-2012. For each hospital, a risk-standardized rate of severe maternal morbidities and a risk-standardized rate of severe newborn morbidities were calculated after adjusting for patient clinical risk factors. Hospitals were ranked based on combined information on their maternal and newborn morbidity rates.

Results: Risk-standardized severe maternal and severe newborn morbidity rates varied substantially across hospitals (10th to 90th percentile range = 67.5-148.2 and 141.8-508.0 per 10 000 term births, respectively), although there was no significant association between the two (P = 0.15). Government hospitals (non-Federal) were more likely than other hospitals to be in worse rank quartiles (P value for trend = 0.004), whereas larger volume was associated with better rank among hospitals in the first three quartiles (P = 0.004). The most prevalent morbidities that differed progressively across hospital rank quartiles were severe hemorrhage, disseminated intravascular coagulation, and heart failure during procedure/surgery for mothers, and severe infection, respiratory complication, and shock/resuscitation for neonates.

Conclusions: Hospitals with low maternal morbidity rates may not have low neonatal morbidity rates and vice versa, highlighting the importance of assessing joint maternal-newborn outcomes in order to fully characterize a hospital's obstetrical performance. Hospitals with smaller volume and government ownership tend to have less desirable outcomes and warrant additional attention in future quality improvement efforts.

Keywords: childbirth; hospital variation; morbidity; obstetric; quality and safety.

Publication types

  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Adult
  • Birth Certificates
  • California / epidemiology
  • Cesarean Section / statistics & numerical data
  • Female
  • Gestational Age
  • Hospitals / standards*
  • Hospitals / statistics & numerical data
  • Humans
  • Infant, Newborn
  • Infant, Newborn, Diseases / epidemiology*
  • Morbidity
  • Obstetric Labor Complications*
  • Obstetrics / standards*
  • Patient Discharge
  • Poisson Distribution
  • Pregnancy
  • Quality Indicators, Health Care*
  • Regression Analysis
  • Risk Factors
  • Young Adult