Does Cerebellar Injury in Premature Infants Contribute to the High Prevalence of Long-term Cognitive, Learning, and Behavioral Disability in Survivors?
Bibliographic record
Abstract
OBJECTIVE: Although cerebellar hemorrhagic injury is increasingly diagnosed in infants who survive premature birth, its long-term neurodevelopmental impact is poorly defined. We sought to delineate the potential role of cerebellar hemorrhagic injury in the long-term disabilities of survivors of prematurity. DESIGN: We compared neurodevelopmental outcome in 3 groups of premature infants (N = 86; 35 isolated cerebellar hemorrhagic injury, 35 age-matched controls, 16 cerebellar hemorrhagic injury plus supratentorial parenchymal injury). Subjects underwent formal neurologic examinations and a battery of standardized developmental, functional, and behavioral evaluations (mean age: 32.1 +/- 11.1 months). Autism-screening questionnaires were completed. RESULTS: Neurologic abnormalities were present in 66% of the isolated cerebellar hemorrhagic injury cases compared with 5% of the infants in the control group. Infants with isolated cerebellar hemorrhagic injury versus controls had significantly lower mean scores on all tested measures, including severe motor disabilities (48% vs 0%), expressive language (42% vs 0%), delayed receptive language (37% vs 0%), and cognitive deficits (40% vs 0%). Isolated cerebellar hemorrhagic injury was significantly associated with severe functional limitations in day-to-day activities. Significant differences were noted between cases of cerebellar hemorrhagic injury versus controls on autism screeners (37% vs 0%) and internalizing behavioral problems (34% vs 9%). Global developmental, functional, and social-behavioral deficits were more common and profound in preterm infants with injury to the vermis. Preterm infants with cerebellar hemorrhagic injury and supratentorial parenchymal injury were not at overall greater risk for neurodevelopmental disabilities, although neuromotor impairment was more severe. CONCLUSIONS: Cerebellar hemorrhagic injury in preterm infants is associated with a high prevalence of long-term pervasive neurodevelopment disabilities and may play an important and underrecognized role in the cognitive, learning, and behavioral dysfunction known to affect survivors.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.005 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".