Bibliographic record
Abstract
Croup, a common respiratory illness of childhood, is the focus of this issue's 'Clinical Answers'.Croup (laryngotracheobronchitis) affects up to 3% of children under the age of six years every year (1) and is also occasionally seen in older children and rarely in adolescents and adults (2).Croup is most commonly caused by parainfluenza type 1 and 3 viral infection, but other viruses have been implicated including influenza A and B, respiratory syncytial virus, adenovirus, coronavirus, rhinovirus and human metapneumovirus, among others (1, 3-7).The infection leads to inflammation and oedema of the upper airway mucosa and narrowing of the subglottic region, causing varying degrees of airway obstruction.Classic symptoms include the sudden onset of barky cough and hoarse voice, and in more severe cases, stridor and chest wall indrawing.The majority of children have mild, shortlived symptoms (6).However, a small proportion of children have moderate to severe symptoms which can result in hospital admission (8-10), and in the most severe cases, intubation (11)(12)(13)(14).Croup is a clinical diagnosis, based upon careful history and physical examination in a child presenting with typical symptoms.In general, the diagnosis is straightforward, but rare alternate causes of stridor and respiratory distress should be considered and excluded (15).The most likely alternate diagnoses include bacterial tracheitis and epiglottitis, especially in a child who has atypical symptoms, does not respond as anticipated to treatment or who shows deterioration (15,16).There are several practical management aspects in croup that are not evidence based but are clinically sensible.In any child with possible airway obstruction, it is important to take care to minimize distressing procedures and to maintain a calm and reassuring environment (15).Although there is no published evidence that oxygen should be administered, it is routinely given to children who are showing signs of respiratory distress.Blow-by oxygen can be administered by the parent via tubing held a few centimetres from the child's nose and mouth.Children should not be treated
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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 | 0.002 | 0.029 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.003 | 0.001 |
| Science and technology studies | 0.002 | 0.002 |
| Scholarly communication | 0.007 | 0.008 |
| Open science | 0.003 | 0.005 |
| Research integrity | 0.011 | 0.011 |
| Insufficient payload (model declined to judge) | 0.161 | 0.076 |
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".