67 A population-based cohort study of endocrine outcomes within the first 5 years of life in children born preterm
Bibliographic record
Abstract
Abstract Background Preterm birth (<37 weeks’ gestational age [GA]) occurs in 8% of live births in Canada. While advancements in neonatal medicine have led to increased survival in preterm births, infants born preterm continue to sustain short- and long-term health sequelae. There is paucity of large population studies evaluating childhood health care outcomes, including endocrine-related outcomes, in recent birth cohorts. Objectives To evaluate the rates of endocrine conditions during the first 5 years of life in children born preterm and term. Design/Methods The study cohort included liveborn infants at 22-44 weeks’ GA in British Columbia, Canada between 2004-2014. Follow-up data to December 2019 included linked health services use information from four BC provincial databases (perinatal database, hospitalizations, outpatient services, and outpatient prescriptions). Rates of outcomes were compared by GA at birth (37-44 weeks reference category) using robust Poisson regression. Results There were 455,960 children included in this study with 42,820 (9.4%) born at <37 weeks GA. Results are summarized in Table 1 and Table 2. Compared to children born at 37-44 weeks’ gestations, infants born at 36 weeks’ gestation or younger have an increased rate of thyroid disorders between 0 months and 5 years (rate ratio [RR]: 1.45, 95% confidence interval [CI]: 0.78-2.43; RR: 1.83, 95% CI 1.51-2.20; RR: 1.41 95% CI 1.26-1.57 for 22-27 weeks, 28-33 weeks and 34-36 weeks GA, respectively). Similarly, infants born at 36 weeks’ gestation or younger have a higher rate of conditions in growth and development (RR: 3.05, 95% CI: 0.76-7.96; RR: 3.20, 95% CI 2.04-4.76; RR: 1.42 95% CI 1.02-1.94 for 22-27 weeks, 28-33 weeks and 34-36 weeks gestations, respectively) and bone health conditions (RR: 1.38, 95% CI: 1.27-1.49; RR: 1.04, 95% CI 1.00-1.08; RR: 1.05 95% CI 1.03-1.07 for 22-27 weeks, 28-33 weeks and 34-36 weeks gestations, respectively). There was no difference in rates of conditions related to glucose metabolism such as diabetes mellitus or hypoglycemia. Conclusion Children born preterm have increased rates of endocrine conditions by age 5. Disorders of thyroid, growth and development are increased in infants born preterm. Children born preterm have an increase rate of bone-related disorders, including those born late-preterm. These results provide useful prognostic information for follow-up care for preterm children and for healthcare resource planning. Furthermore, these results highlight areas of future research in endocrine health among preterm infants.
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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 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.003 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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".