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Multi-domain cognitive impairments at school age in very preterm-born children compared to term-born peers
Elise Roze1,2, Sijmen A Reijneveld3, Roy E Stewart3
1Division of Neonatology, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, Netherlands. e.roze@umcutrecht.nl.
Insights
Very preterm children often experience multiple cognitive impairments by school age, a higher rate than term-born peers. These deficits appear to be a general increase rather than a specific pattern of cognitive dysfunction.
Area of Science:
- Developmental neuroscience
- Pediatric neurology
- Cognitive psychology
Background:
- Preterm infants face risks for lasting motor, cognitive, and behavioral deficits.
- Cognitive impairments may persist into childhood, impacting development.
- Understanding these long-term effects is crucial for early intervention.
Purpose of the Study:
- To investigate the co-occurrence of cognitive impairments across multiple domains at school age in very preterm children.
- To compare the patterns of cognitive deficits in very preterm children versus term-born controls.
Main Methods:
- A comparative study included 60 very preterm children (≤32 weeks gestation) and 120 term-born controls.
- Cognitive functions assessed at school age included intelligence (WISC-III), visuomotor integration (NEPSY-II), verbal memory (AVLT), attention (TEA-ch), and executive functioning (BRIEF).
- Co-occurrence of abnormal (<5th percentile) and suspect-abnormal (<15th percentile) cognitive functions was analyzed.
Main Results:
- 15% of preterm children had abnormal outcomes in multiple cognitive functions (≥2), compared to 3% of controls (OR 4.65).
- Rates of multiple suspect-abnormal cognitive outcomes were 55% in preterms versus 25% in controls (OR 3.02).
- Low performance IQ was more frequently associated with additional cognitive impairments in preterm children (OR 5.43).
Conclusions:
- A majority of very preterm children exhibit co-occurring impairments in multiple cognitive domains.
- The increased occurrence of multi-domain cognitive impairments in preterms suggests a general developmental impact, not a specific impairment pattern.
- While preterm birth is linked to broader cognitive challenges, specific patterns of co-occurrence do not differ significantly from controls, except for low performance IQ.
Background:
Preterm infants are at risk for functional impairments in motor, cognitive, and behavioral development that may persist into childhood. The aim of this study was to determine the co-occurrence of cognitive impairments in multiple cognitive domains at school age in very preterm born children compared to term-born children.
Methods:
Comparative study including 60 very preterm-born children (gestational age ≤ 32 weeks) and 120 term-born controls. At school age, we assessed intelligence with the WISC-III, and visuomotor integration with the NEPSY-II, verbal memory with the AVLT, attention with the TEA-ch, and executive functioning with the BRIEF. We investigated co-occurrence of various abnormal (<5th percentile) and suspect-abnormal (<15th percentile, including both suspect and abnormal) cognitive functions.
Results:
At mean age 8.8 years, 15% of preterm children had abnormal outcomes in multiple cognitive functions (≥2), versus 3% of the controls (odds ratio, OR 4.65, 95%-confidence interval, CI 1.33-16.35). For multiple suspect-abnormal cognitive outcomes, rates were 55% versus 25% (OR 3.02, 95%-CI 1.49-6.12). We found no pattern of co-occurrence of cognitive impairments among preterm children that deviated from term-born controls. However, low performance IQ was more frequently accompanied by additional cognitive impairments in preterms than in controls (OR 5.43, 95%-CI 1.75-16.81).
Conclusions:
A majority of preterm children showed co-occurrence of impairments in multiple cognitive domains, but with no specific pattern of impairments. The occurrence of multi-domain cognitive impairments is higher in preterms but this seems to reflect a general increase, not one with a pattern specific for preterm-born children.
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