Temporal Trend of Pediatric Inflammatory Bowel Disease
Bibliographic record
Abstract
Increased incidence and prevalence of pediatric inflammatory bowel disease (IBD) have been reported in Western countries. Changes in the prevalence of pediatric IBD in Asian countries, however, remain unclear. We evaluated the changes in the prevalence of IBD among Japanese adults and children from 2004 to 2013, by using the Japanese national registry data of patients receiving financial aid. Data from children (ages 0-19 years) were compared with those from young adults (ages 20-39 years). In 2004, age-standardized prevalences of Crohn disease (CD) and ulcerative colitis (UC) among children were 4.2 of 100,000 and 11.0 of 100,000, respectively. The corresponding prevalences among young adults were 41.0 of 100,000 and 89.8 of 100,000, respectively. In 2013, age-standardized prevalences of pediatric CD and UC were 7.2 of 100,000 and 15.0 of 100,000, respectively. During this period, prevalence of pediatric CD increased by 73.8% among children and by 49.0% in young adults. The prevalence of UC increased by 45.0% among children, and by 73.7% among young adults.
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.003 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 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".