Respiratory and systemic health of apprentice-welders : a prospective study
Bibliographic record
Abstract
This dissertation is a result of an epidemiological prospective cohort study carried out among apprentice welders at four vocational teaching institutions in welding profession in the Montreal region, for the purpose of: (1) assessing the respiratory health of students, before starting welding, such as respiratory symptoms suggestive of asthma, lung function and bronchial responsiveness as well as immunological sensitization to common allergens and to metals; (2) providing a reassessment of the respiratory health of these same students as well as an assessment of the incidence of systemic symptoms suggestive of metal fume fever (MFF) after being exposed to welding fumes; (3) estimating the association between MFF and the incidence of bronchial hyperresponsiveness (BHR) and/or the presence of welding-related respiratory symptoms suggestive of occupational asthma (OA); (4) determining whether atopy, immunological sensitization to metals encountered in the welding environment, smoking and a personal history of asthma, are associated with an increased level of BHR or welding-related respiratory symptoms suggestive of OA; and (5) determining the relationship between exposure to metal oxide fumes and the outcome variables, i.e., MFF, immunological sensitization to metals, welding-related respiratory symptoms suggestive of OA and BHR.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 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 teacher head, 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".