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Wide variation in severe neonatal morbidity among very preterm infants in European regions
Anna Karin Edstedt Bonamy1,2, Jennifer Zeitlin3, Aurélie Piedvache3
1Department of Women's and Children's Health, Karolinska Institute, Stockholm, Sweden.
Insights
Severe neonatal morbidity rates for very preterm infants varied significantly across European regions. These rates were not correlated with regional mortality rates, indicating independent factors influence outcomes.
Area of Science:
- Neonatalogy
- Perinatal Epidemiology
- Public Health
Background:
- Very preterm (VPT) infants face significant risks of severe neonatal morbidity.
- Variations in care and outcomes exist across different geographical regions.
- Understanding regional differences in morbidity and mortality is crucial for improving neonatal care.
Purpose of the Study:
- To investigate the geographical variation in severe neonatal morbidity among very preterm infants in Europe.
- To determine if higher morbidity rates are associated with regions having lower mortality rates.
Main Methods:
- An area-based cohort study included all births before 32 weeks of gestational age across 16 European regions.
- Severe neonatal morbidity was defined using standardized criteria (IVH, PVL, NEC, ROP).
- Data from 6422 survivors were analyzed, correlating regional morbidity with adjusted in-hospital mortality rates.
Main Results:
- Severe neonatal morbidity occurred in 10.6% (without BPD) to 13.8% (with BPD) of VPT survivors.
- Significant regional variations in morbidity (6.4%-23.5%) and mortality (8.4%-18.8%) were observed.
- Morbidity rates did not correlate with mortality rates after adjusting for confounding factors (P=0.50).
Conclusions:
- Wide variations in severe neonatal morbidity exist among very preterm infants across European regions.
- Regional differences in severe neonatal morbidity are independent of regional mortality rates.
- Further research is needed to identify factors driving these regional disparities in neonatal outcomes.
Objective:
To investigate the variation in severe neonatal morbidity among very preterm (VPT) infants across European regions and whether morbidity rates are higher in regions with low compared with high mortality rates.
Design:
Area-based cohort study of all births before 32 weeks of gestational age.
Setting:
16 regions in 11 European countries in 2011/2012.
Patients:
Survivors to discharge from neonatal care (n=6422).
Main Outcome Measures:
Severe neonatal morbidity was defined as intraventricular haemorrhage grades III and IV, cystic periventricular leukomalacia, surgical necrotizing enterocolitis and retinopathy of prematurity grades ≥3. A secondary outcome included severe bronchopulmonary dysplasia (BPD), data available in 14 regions. Common definitions for neonatal morbidities were established before data abstraction from medical records. Regional severe neonatal morbidity rates were correlated with regional in-hospital mortality rates for live births after adjustment on maternal and neonatal characteristics.
Results:
10.6% of survivors had a severe neonatal morbidity without severe BPD (regional range 6.4%-23.5%) and 13.8% including severe BPD (regional range 10.0%-23.5%). Adjusted inhospital mortality was 13.7% (regional range 8.4%-18.8%). Differences between regions remained significant after consideration of maternal and neonatal characteristics (P<0.001) and severe neonatal morbidity rates were not correlated with mortality rates (P=0.50).
Conclusion:
Severe neonatal morbidity rates for VPT survivors varied widely across European regions and were independent of mortality rates.
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