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Perinatal Risk Factors for the Retinopathy of Prematurity in Postnatal Growth and Rop Study
Gui-Shuang Ying1, Edward F Bell2, Pamela Donohue3
1a Department of Ophthalmology , Scheie Eye Institute, University of Pennsylvania , Philadelphia , Pennsylvania , USA.
Insights
Retinopathy of prematurity (ROP) risk is primarily linked to how early an infant is born, specifically birth weight and gestational age. Other perinatal factors play a minor role in ROP development.
Area of Science:
- Neonatal ophthalmology
- Perinatal medicine
- Public health
Background:
- Retinopathy of prematurity (ROP) is a significant cause of visual impairment in premature infants.
- Identifying perinatal risk factors is crucial for targeted ROP screening and prevention strategies.
Purpose of the Study:
- To evaluate perinatal risk factors associated with retinopathy of prematurity (ROP) in a large cohort of premature infants.
- To determine the predictive value of identified risk factors for ROP development and severity.
Main Methods:
- Secondary analysis of the retrospective G-ROP Study cohort, including 7483 premature infants from 29 North American hospitals (2006-2012).
- Multivariable logistic regression was used to identify significant risk factors for any ROP and severe ROP.
- Area Under the Receiver Operating Characteristic Curve (AUC) was calculated to assess predictive accuracy.
Main Results:
- 43.1% of infants had any ROP, and 12.4% had severe ROP.
- Key risk factors for any ROP included lower birth weight (BW), younger gestational age (GA), lower Apgar score, White race, outborn status, and delivery room intubation.
- Lower BW and younger GA were the dominant predictors for both any ROP (AUC=0.86) and severe ROP (AUC=0.88).
Conclusions:
- Prematurity, indicated by low birth weight and young gestational age, is the predominant determinant of ROP risk.
- While other perinatal factors contribute, their impact on ROP development is minimal compared to the degree of prematurity.
- Findings support current ROP screening guidelines emphasizing infants born at the earliest gestational ages.
Abstract:
Objective: To evaluate perinatal risk factors for retinopathy of prematurity (ROP), in a large, broad-risk cohort of premature infants. Study design: Secondary analysis of data from the Postnatal Growth and ROP (G-ROP) Study, a retrospective cohort study of infants undergoing ROP examinations at 29 North American hospitals in 2006-2012. Results: Among 7483 infants, 3224 (43.1%) had any ROP and 931 (12.4%) had severe ROP (Type 1 or 2 ROP). In multivariable logistic regression analysis, significant risk factors for any ROP were lower birth weight (BW, odds ratio (OR) = 5.2, <501 g vs. >1250 g), younger gestational age (GA, OR = 32, <25 vs. >29 weeks), 1-min Apgar score <4 (OR = 1.2), race (OR = 1.6, White vs. Black), outborn (OR = 1.5), and delivery room intubation (OR = 1.3); and for severe ROP were lower BW (OR = 20, <501 g vs. >1250 g), younger GA (OR = 30, <25 vs. >29 weeks), male (OR = 1.5), Hispanic ethnicity (OR = 1.8), race (OR = 1.6, White vs. Black), outborn (OR = 1.6), and delivery room intubation (OR = 1.6). Together, these factors predicted well for any ROP (area under ROC curve (AUC) = 0.87) and severe ROP (AUC = 0.89), but BW and GA were the dominant factors for ROP (AUC = 0.86) and severe ROP (AUC = 0.88). Conclusions: Based on the largest report to date with detailed ROP data from infants meeting current screening guidelines, ROP risk is predominantly determined by the degree of prematurity at birth, with other perinatal factors contributing minimally.
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