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Adams SY, Fry JT, Henner N. What Is Culture Made of? An Exploratory Study of Ethical Cultures and Provider Perspectives on the Care of Periviable Neonates. Am J Perinatol 2024. [PMID: 39299244 DOI: 10.1055/a-2405-3336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/22/2024]
Abstract
OBJECTIVE Studies examining intercenter variation in neonatal intensive care unit practices at the limits of fetal viability have hypothesized that institutional "culture" can be one of many factors that impact patient care. This study aimed to describe institutional culture at a single, large academic center with regard to the antenatal consultation, resuscitation, and postnatal management of periviable neonates. STUDY DESIGN Members of six clinical groups-attending and fellow maternal-fetal medicine physicians, attending and fellow neonatal-perinatal medicine physicians, neonatal nurses, advanced practiced neonatal nurses, pediatric hospitalist physicians, and neonatal respiratory therapists-were invited to complete qualitative, semi-structured interviews. All audio recordings were transcribed. Dedoose software was used to complete team-based coding and thematic analysis. RESULTS Twenty-two interviews were completed. Thematic analysis revealed three central themes described by participants as contributory to institutional culture: Perception, referring to factors based on individual attitudes and insights, Statements of Information, referring to factors anchored in more objective concepts such as outcomes data and institutional policy, and Dynamic Factors, referring to the relatively fluid factors of institutional culture that interact with both Perception and Statements of Information. Participants were more likely to mention factors in the Perception category (n = 430) compared with factors in the Information category (n = 225), and although the latter were described as critical components of antenatal counseling and perinatal management, the philosophy of our unit appeared to be more heavily rooted in institutional memory and individual belief systems. CONCLUSION Our data demonstrate a personal undertone to institutional culture at the limits of viability, with an emphasis on individual attitudes and subjective interpretations of fact rather than empirical data. As the landscape of neonatology continues to change, understanding those factors that contribute to culture remains a necessary step toward deconstructing institutional belief systems and optimizing clinical care. KEY POINTS · Institutional culture is the collective norms and attitudes that help guide organizational behavior.. · Institutional culture may be one of many factors that impact the care of periviable neonates.. · Deconstructing culture helps us better understand our clinical environment and optimize patient care..
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Affiliation(s)
- Shannon Y Adams
- Department of Pediatrics, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois
| | - Jessica T Fry
- Department of Pediatrics, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois
- Division of Neonatology, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, Illinois
- Division of Neonatology, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois
| | - Natalia Henner
- Department of Pediatrics, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois
- Division of Neonatology, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, Illinois
- Division of Neonatology, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois
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Nair Shah N, Krishna I, Vyas-Read S, Patel RM. Neonatal and Obstetric Provider Perceptions and Management at 22 Weeks' Gestation. Am J Perinatol 2024; 41:e879-e885. [PMID: 36302520 DOI: 10.1055/a-1969-1237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
OBJECTIVE Active treatment for periviable infants may be influenced by neonatal and obstetric provider perceptions of prognosis. The two aims of this study are to (1) quantify prognostic discordance between provider and data-driven survival estimates and (2) evaluate if prognostic discordance is associated with the threshold probability of survival at which neonatal providers recommend active treatment or obstetric providers recommend antenatal corticosteroids. STUDY DESIGN Provider survival estimates and threshold probabilities of survival for active treatment and antenatal steroid use were obtained from a case-based survey for an infant or pregnancy at 22 weeks' gestation that was administered at two Atlanta hospitals. Data-driven survival estimates, including ranges, were acquired through the National Institute of Child Health and Human Development Extremely Preterm Birth Outcomes Tool. Prognostic discordance was calculated as the difference between a provider and data-driven estimates and classified as pessimistic (provider estimate below data-driven estimate range), accurate (within range), or optimistic (above range). The association between prognostic discordance and the threshold probability of survival was evaluated using nonparametric tests. RESULTS We had 137 neonatal respondents (51% response rate) and 57 obstetric responses (23% response rate). The overall median prognostic discordance was 1.5% (interquartile range: 17, 13) and 52 (27%) of all respondents were pessimistic, 100 (52%) were accurate, and 42 (22%) were optimistic. The survival threshold above which neonatal and obstetric providers recommended active treatment or antenatal corticosteroids was 30% (20-45%) and 10% (0-20%), respectively. Thresholds did not significantly differ among the three prognostic discordance groups (p = 0.45 for neonatal and p = 0.53 for obstetric providers). There was also no significant correlation between the magnitude of prognostic discordance and thresholds. CONCLUSION Prognostic discordance exists among both neonatal and obstetric providers. However, this discordance is not associated with the threshold probability of survival at which providers recommend active treatment or antenatal corticosteroids at 22 weeks' gestation. KEY POINTS · Prognostic discordance at 22 weeks' gestation exists for neonatal and obstetric providers.. · Prognostic discordance is not associated with survival thresholds for neonatal active treatment.. · Prognostic discordance is not associated with survival thresholds for the use of antenatal corticosteroids..
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Affiliation(s)
- Nitya Nair Shah
- Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, Georgia
| | - Iris Krishna
- Department of Gynecology and Obstetrics, Emory University School of Medicine, Atlanta, Georgia
| | - Shilpa Vyas-Read
- Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, Georgia
| | - Ravi Mangal Patel
- Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, Georgia
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Forth FA, Hammerle F, König J, Urschitz MS, Neuweiler P, Mildenberger E, Kidszun A. Optimistic vs Pessimistic Message Framing in Communicating Prognosis to Parents of Very Preterm Infants: The COPE Randomized Clinical Trial. JAMA Netw Open 2024; 7:e240105. [PMID: 38393728 PMCID: PMC10891472 DOI: 10.1001/jamanetworkopen.2024.0105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 01/03/2024] [Indexed: 02/25/2024] Open
Abstract
Importance In the neonatal intensive care unit, there is a lack of understanding about how best to communicate the prognosis of a serious complication to parents. Objective To examine parental preferences and the effects of optimistic vs pessimistic message framing when providing prognostic information about a serious complication. Design, Setting, and Participants This crossover randomized clinical trial was conducted at a single German university medical center between June and October 2021. Eligible participants were parents of surviving preterm infants with a birth weight under 1500 g. Data were analyzed between October 2021 and August 2022. Interventions Alternating exposure to 2 scripted video vignettes showing a standardized conversation between a neonatologist and parents, portrayed by professional actors, about the prognosis of a hypothetical very preterm infant with severe intraventricular hemorrhage. The video vignettes differed in the framing of identical numerical outcome estimates as either probability of survival and probability of nonimpairment (optimistic framing) or a risk of death and impaired survival (pessimistic framing). Main Outcomes and Measures The primary outcome was preference odds (ratio of preference for optimistic vs pessimistic framing). Secondary outcomes included state anxiety, perceptions of communication, and recall of numerical estimates. Results Of 220 enrolled parents (142 [64.5%] mothers; mean [SD] age: mothers, 39.1 [5.6] years; fathers, 42.7 [6.9] years), 196 (89.1%) preferred optimistic and 24 (10.1%) preferred pessimistic framing (preference odds, 11.0; 95% CI, 6.28-19.10; P < .001). Preference for optimistic framing was more pronounced when presented second than when presented first (preference odds, 5.41; 95% CI, 1.77-16.48; P = .003). State anxiety scores were similar in both groups at baseline (mean difference, -0.34; -1.18 to 0.49; P = .42) and increased equally after the first video (mean difference, -0.55; 95% CI, -1.79 to 0.69; P = .39). After the second video, state anxiety scores decreased when optimistic framing followed pessimistic framing but remained unchanged when pessimistic framing followed optimistic framing (mean difference, 2.15; 95% CI, 0.91 to 3.39; P < .001). With optimistic framing, participants recalled numerical estimates more accurately for survival (odds ratio, 4.00; 95% CI, 1.64-9.79; P = .002) but not for impairment (odds ratio, 1.50; 95% CI, 0.85-2.63; P = .16). Conclusions and Relevance When given prognostic information about a serious complication, parents of very preterm infants may prefer optimistic framing. Optimistic framing may lead to more realistic expectations for survival, but not for impairment. Trial Registration German Clinical Trials Register (DRKS): DRKS00024466.
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Affiliation(s)
- Fiona A. Forth
- Division of Neonatology, Center for Pediatric and Adolescent Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Florian Hammerle
- Department of Pediatric and Adolescent Psychiatry and Psychotherapy, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Jochem König
- Division of Pediatric Epidemiology, Institute for Medical Biostatistics, Epidemiology and Informatics, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Michael S. Urschitz
- Division of Pediatric Epidemiology, Institute for Medical Biostatistics, Epidemiology and Informatics, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Philipp Neuweiler
- Journalistisches Seminar, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Eva Mildenberger
- Division of Neonatology, Center for Pediatric and Adolescent Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - André Kidszun
- Division of Neonatology, Center for Pediatric and Adolescent Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- Division of Neonatology, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
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Wiens MO, Trawin J, Pillay Y, Nguyen V, Komugisha C, Kenya-Mugisha N, Namala A, Bebell LM, Ansermino JM, Kissoon N, Payne BA, Vidler M, Christoffersen-Deb A, Lavoie PM, Ngonzi J. Prognostic algorithms for post-discharge readmission and mortality among mother-infant dyads: an observational study protocol. FRONTIERS IN EPIDEMIOLOGY 2023; 3:1233323. [PMID: 38455948 PMCID: PMC10911031 DOI: 10.3389/fepid.2023.1233323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 11/13/2023] [Indexed: 03/09/2024]
Abstract
Introduction In low-income country settings, the first six weeks after birth remain a critical period of vulnerability for both mother and newborn. Despite recommendations for routine follow-up after delivery and facility discharge, few mothers and newborns receive guideline recommended care during this period. Prediction modelling of post-delivery outcomes has the potential to improve outcomes for both mother and newborn by identifying high-risk dyads, improving risk communication, and informing a patient-centered approach to postnatal care interventions. This study aims to derive post-discharge risk prediction algorithms that identify mother-newborn dyads who are at risk of re-admission or death in the first six weeks after delivery at a health facility. Methods This prospective observational study will enroll 7,000 mother-newborn dyads from two regional referral hospitals in southwestern and eastern Uganda. Women and adolescent girls aged 12 and above delivering singletons and twins at the study hospitals will be eligible to participate. Candidate predictor variables will be collected prospectively by research nurses. Outcomes will be captured six weeks following delivery through a follow-up phone call, or an in-person visit if not reachable by phone. Two separate sets of prediction models will be built, one set of models for newborn outcomes and one set for maternal outcomes. Derivation of models will be based on optimization of the area under the receiver operator curve (AUROC) and specificity using an elastic net regression modelling approach. Internal validation will be conducted using 10-fold cross-validation. Our focus will be on the development of parsimonious models (5-10 predictor variables) with high sensitivity (>80%). AUROC, sensitivity, and specificity will be reported for each model, along with positive and negative predictive values. Discussion The current recommendations for routine postnatal care are largely absent of benefit to most mothers and newborns due to poor adherence. Data-driven improvements to postnatal care can facilitate a more patient-centered approach to such care. Increasing digitization of facility care across low-income settings can further facilitate the integration of prediction algorithms as decision support tools for routine care, leading to improved quality and efficiency. Such strategies are urgently required to improve newborn and maternal postnatal outcomes. Clinical trial registration https://clinicaltrials.gov/, identifier (NCT05730387).
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Affiliation(s)
- Matthew O. Wiens
- Institute for Global Health, BC Children’s and Women’s Hospitals, Vancouver, BC, Canada
- Department of Anesthesiology, Pharmacology & Therapeutics, University of British Columbia, Vancouver, BC, Canada
- WALIMU, Kampala, Uganda
| | - Jessica Trawin
- Institute for Global Health, BC Children’s and Women’s Hospitals, Vancouver, BC, Canada
| | - Yashodani Pillay
- Institute for Global Health, BC Children’s and Women’s Hospitals, Vancouver, BC, Canada
- Department of Anesthesiology, Pharmacology & Therapeutics, University of British Columbia, Vancouver, BC, Canada
| | - Vuong Nguyen
- Institute for Global Health, BC Children’s and Women’s Hospitals, Vancouver, BC, Canada
| | | | | | - Angella Namala
- Department of Obstetrics & Gynaecology, Jinja Regional Referral Hospital, Jinja, Uganda
| | - Lisa M. Bebell
- Department of Medicine, Division of Infectious Diseases, Medical Practice Evaluation Center, Center for Global Health, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - J. Mark Ansermino
- Institute for Global Health, BC Children’s and Women’s Hospitals, Vancouver, BC, Canada
- Department of Anesthesiology, Pharmacology & Therapeutics, University of British Columbia, Vancouver, BC, Canada
| | - Niranjan Kissoon
- Institute for Global Health, BC Children’s and Women’s Hospitals, Vancouver, BC, Canada
- Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada
| | - Beth A. Payne
- Digital Health Research, BC Children’s Hospital Research Institute, Vancouver, BC, Canada
- School of Population and Public Health, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Marianne Vidler
- Department of Obstetrics & Gynaecology, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Astrid Christoffersen-Deb
- Department of Obstetrics & Gynaecology, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Pascal M. Lavoie
- Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada
- Digital Health Research, BC Children’s Hospital Research Institute, Vancouver, BC, Canada
| | - Joseph Ngonzi
- Department of Obstetrics and Gynaecology, Mbarara University of Science & Technology, Mbarara, Uganda
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Osborn EK, Alshaikh E, Nelin LD, Jadcherla SR. A decade of evidence: standardized feeding initiative targeting feeding milestones and predicting NICU stays in premature infants in an all-referral level IV NICU. J Perinatol 2023; 43:1105-1112. [PMID: 37117395 PMCID: PMC10147899 DOI: 10.1038/s41372-023-01675-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 03/10/2023] [Accepted: 04/12/2023] [Indexed: 04/30/2023]
Abstract
OBJECTIVE Ten-year data from the simplified, individualized, milestone-targeted, pragmatic, longitudinal and educational (SIMPLE) feeding initiative were examined by gestational age (GA) category to characterize the feeding milestones, length of hospital stays (LOHS), annual variability and predictive models for LOHS. STUDY DESIGN Preterm infants (≤32 weeks GA, N = 434) in level-IV NICU had milestone-targeted feeding plans. Continuous data were analyzed for outcomes. RESULTS Over 93% successfully attained full oral feedings. Earlier acquisition of feeding milestones correlated with earlier discharge (P < 0.05). Year-wise analysis showed sustained maintenance of milestones (P < 0.05). Milestones and outcomes (P < 0.001) were significantly correlated with different GA categories. Prediction models for LOHS were derived using GA, BPD, age at full enteral, postmenstrual age (PMA) at 1st and full oral feeds. CONCLUSIONS The SIMPLE feeding program minimized variability and promoted acquisition of feeding milestones consistently. LOHS is predictable using feeding milestones, co-morbidities, GA, and PMA at feeding milestones.
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Affiliation(s)
- Erika K Osborn
- The Innovative Feeding Disorders Research Program, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Enas Alshaikh
- The Innovative Feeding Disorders Research Program, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Leif D Nelin
- Division of Neonatology, Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Sudarshan R Jadcherla
- The Innovative Feeding Disorders Research Program, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA.
- Division of Neonatology, Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA.
- Division of Pediatric Gastroenterology and Nutrition, Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA.
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Shukla VV, Rysavy MA, Das A, Tyson JE, Bell EF, Ambalavanan N, Carlo WA. Outcome prediction in newborn infants: Past, present, and future. Semin Perinatol 2022; 46:151641. [PMID: 35850743 PMCID: PMC10969981 DOI: 10.1016/j.semperi.2022.151641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The perinatal and neonatal periods are the periods of considerable organ development and maturation. Perinatal and neonatal illnesses can result in mortality and morbidities that burden families and the healthcare system. Outcome prediction is essential for informing perinatal and intensive care management, prognosis, and post-discharge interventions. The Eunice Kennedy Shriver National Institute of Child Health and Human Development Neonatal Research Network (NRN) research databases include hospital and neurodevelopment follow-up outcomes of infants with various underlying diseases and conditions receiving intensive care, providing a unique opportunity to assess outcome risk prediction. The NRN has developed outcome risk prediction tools for use in infants with various diseases and conditions that allow data-driven, transparent discussions to inform family-focused communications and clinical management. This review presents the published neonatal outcome risk prediction research from the NRN, their present clinical utility, and possible future directions for advanced individualized risk prediction.
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Affiliation(s)
- Vivek V Shukla
- University of Alabama at Birmingham, Birmingham, AL, USA.
| | | | - Abhik Das
- RTI International, Research Triangle Park, NC, USA
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Ethical considerations in the management of infants with severe intraventricular hemorrhage. Semin Perinatol 2022; 46:151599. [PMID: 35450739 DOI: 10.1016/j.semperi.2022.151599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Intrinsic and extrinsic factors unique to neonatal care can complicate predictions of neurological outcomes for infants who suffer from severe intraventricular hemorrhage. While care decisions are driven by the same bioethical principles used in other domains, neurological prognostication can challenge concepts of futility, require careful examination of parental values, uncover biases and/or potentially compromise the best interests of the future child. In the following chapter we will review bioethical principles and relevant concepts, explore challenges to decision-making surrounding diagnoses of severe intraventricular hemorrhage and conclude with a brief review of practical approaches for counseling parents about neurodevelopmental impairment given the constraints of prognostic uncertainty and assumptions related to quality of life. We will argue that neurological findings alone, even in the setting of severe intraventricular hemorrhage, often do not constitute enough evidence for redirection of care but can be permissible when the entire neonatal condition is considered.
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Nair N, Patel RM. The center-effect on outcomes for infants born at less than 25 weeks. Semin Perinatol 2022; 46:151538. [PMID: 34911651 PMCID: PMC9730551 DOI: 10.1016/j.semperi.2021.151538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Marked variation exists in the care of infants born at <25 weeks' gestation. The center or location where a fetus or infant is cared for influences outcomes at very early gestational ages. Understanding this "center-effect," including characteristics associated with centers that have high survival of births at <25 weeks' gestation, may inform future studies and guide care practices to improve outcomes. This review focuses on the impact that the location or center of birth has on survival and other important outcomes for infants born at <25 weeks' gestation. We review potential sources of variation in care practices and other factors that might explain the "center-effect."
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Affiliation(s)
- Nitya Nair
- Department of Pediatrics, Emory University School of Medicine and Children’s Healthcare of Atlanta, GA
| | - Ravi Mangal Patel
- From the Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, 2015 Uppergate Dr. NE, Atlanta, GA.
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Affiliation(s)
- Matthew A Rysavy
- Stead Family Department of Pediatrics, University of Iowa, Iowa City
| | - Marlyse F Haward
- Department of Pediatrics, Albert Einstein College of Medicine and Children's Hospital at Montefiore, Montefiore Medical Center, Bronx, New York
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10
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Rysavy MA, Horbar JD, Bell EF, Li L, Greenberg LT, Tyson JE, Patel RM, Carlo WA, Younge NE, Green CE, Edwards EM, Hintz SR, Walsh MC, Buzas JS, Das A, Higgins RD. Assessment of an Updated Neonatal Research Network Extremely Preterm Birth Outcome Model in the Vermont Oxford Network. JAMA Pediatr 2020; 174:e196294. [PMID: 32119065 PMCID: PMC7052789 DOI: 10.1001/jamapediatrics.2019.6294] [Citation(s) in RCA: 87] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
IMPORTANCE The Eunice Kennedy Shriver National Institute of Child Health and Human Development Neonatal Research Network (NRN) extremely preterm birth outcome model is widely used for prognostication by practitioners caring for families expecting extremely preterm birth. The model provides information on mean outcomes from 1998 to 2003 and does not account for substantial variation in outcomes among US hospitals. OBJECTIVE To update and validate the NRN extremely preterm birth outcome model for most extremely preterm infants in the United States. DESIGN, SETTING, AND PARTICIPANTS This prognostic study included 3 observational cohorts from January 1, 2006, to December 31, 2016, at 19 US centers in the NRN (derivation cohort) and 637 US centers in Vermont Oxford Network (VON) (validation cohorts). Actively treated infants born at 22 weeks' 0 days' to 25 weeks' 6 days' gestation and weighing 401 to 1000 g, including 4176 in the NRN for 2006 to 2012, 45 179 in VON for 2006 to 2012, and 25 969 in VON for 2013 to 2016, were studied. VON cohorts comprised more than 85% of eligible US births. Data analysis was performed from May 1, 2017, to March 31, 2019. EXPOSURES Predictive variables used in the original model, including infant sex, birth weight, plurality, gestational age at birth, and exposure to antenatal corticosteroids. MAIN OUTCOMES AND MEASURES The main outcome was death before discharge. Secondary outcomes included neurodevelopmental impairment at 18 to 26 months' corrected age and measures of hospital resource use (days of hospitalization and ventilator use). RESULTS Among 4176 actively treated infants in the NRN cohort (48% female; mean [SD] gestational age, 24.2 [0.8] weeks), survival was 63% vs 62% among 3702 infants in the era of the original model (47% female; mean [SD] gestational age, 24.2 [0.8] weeks). In the concurrent (2006-2012) VON cohort, survival was 66% among 45 179 actively treated infants (47% female; mean [SD] gestational age, 24.1 [0.8] weeks) and 70% among 25 969 infants from 2013 to 2016 (48% female; mean [SD] gestational age, 24.1 [0.8] weeks). Model C statistics were 0.74 in the 2006-2012 validation cohort and 0.73 in the 2013-2016 validation cohort. With the use of decision curve analysis to compare the model with a gestational age-only approach to prognostication, the updated model showed a predictive advantage. The birth hospital contributed equally as much to prediction of survival as gestational age (20%) but less than the other factors combined (60%). CONCLUSIONS AND RELEVANCE An updated model using well-known factors to predict survival for extremely preterm infants performed moderately well when applied to large US cohorts. Because survival rates change over time, the model requires periodic updating. The hospital of birth contributed substantially to outcome prediction.
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Affiliation(s)
- Matthew A. Rysavy
- Stead Family Department of Pediatrics, University of Iowa, Iowa City
| | - Jeffrey D. Horbar
- Vermont Oxford Network, Burlington,Department of Pediatrics, University of Vermont College of Medicine, Burlington
| | - Edward F. Bell
- Stead Family Department of Pediatrics, University of Iowa, Iowa City
| | - Lei Li
- Biostatistics and Epidemiology Division, RTI International, Research Triangle Park, North Carolina
| | | | - Jon E. Tyson
- Center for Clinical Research & Evidence-Based Medicine, University of Texas McGovern Medical School, Houston
| | - Ravi M. Patel
- Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia
| | | | - Noelle E. Younge
- Department of Pediatrics, Duke University School of Medicine, Durham, North Carolina
| | - Charles E. Green
- Center for Clinical Research & Evidence-Based Medicine, University of Texas McGovern Medical School, Houston
| | - Erika M. Edwards
- Vermont Oxford Network, Burlington,Department of Mathematics and Statistics, College of Engineering and Mathematical Sciences, University of Vermont, Burlington
| | - Susan R. Hintz
- Department of Pediatrics, Stanford University School of Medicine, Palo Alto, California
| | - Michele C. Walsh
- Department of Pediatrics, Case Western Reserve University, Cleveland, Ohio
| | - Jeffrey S. Buzas
- Department of Mathematics and Statistics, College of Engineering and Mathematical Sciences, University of Vermont, Burlington
| | - Abhik Das
- Biostatistics and Epidemiology Division, RTI International, Rockville, Maryland
| | - Rosemary D. Higgins
- Office of Research, George Mason University College of Health and Human Services, Fairfax, Virginia
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Affiliation(s)
- Edward F Bell
- Department of Pediatrics University of Iowa Iowa City, Iowa.
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