Bibliographic record
Abstract
In their well-designed, case–control investigation of mouthguard use in youth ice hockey players and the risk of concussion, Chisholm and colleagues1 report that those wearing a mouthguard—whether custom-made or off-the-shelf—had lower rates of concussion than control participants. The point estimate suggests a considerably reduced risk, although the CIs are broad. The authors report differences in the estimate of reduced risk for custom-made and off-the-shelf mouthguards, with the latter (perhaps surprisingly) having a greater reduction, although again the CIs are broad. The authors are explicit that their study is not powered for precise estimates of this secondary analysis, so we must all be cautious in interpreting this latter observation. The primary observation—that mouthguards are associated with a lower rate of concussion—is an important contribution to the literature. The finding differs from that of the most recent systematic review of whether mouthguards can protect against concussion in contact sports, which concluded that ‘the effect of mouthguards on concussion risk was minimal’,2 although …
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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 | 0.002 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.002 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.006 |
| Insufficient payload (model declined to judge) | 0.004 | 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".