Weather and chinook winds in relation to spontaneous pneumothoraces.
Bibliographic record
Abstract
BACKGROUND: Spontaneous pneumothorax (SP) results from the rupture of blebs or emphysematous bullae. Rapid changes in weather may precipitate this process. The city of Calgary is well suited to examine the effects of weather and specifically the rapid changes in weather associated with a chinook event and the occurrence of SP. METHODS: We performed a retrospective chart review of all cases of SP in the Calgary Health Region from 2001 to 2005. We obtained local hourly weather data over the same period from Environment Canada. We then compared the rates of SP on chinook and nonchinook days. Further, we compared mean daily temperature, humidity, wind speed and atmospheric pressure on chinook and nonchinook days. RESULTS: In all, 220 SP events from 149 patients occurred during the 4.5-year study period. There was no significant difference in the rate of SP on chinook days versus nonchinook days (p = 0.80). Similarly, there was no significant difference in the rate of SP in each of the 4 seasons (p = 0.30). We observed significantly higher average wind speed and lower mean atmospheric pressure on days with SP versus days without (p = 0.009, p = 0.020, respectively). There was no difference in mean temperature or mean relative humidity when comparing days with SP versus days without. CONCLUSION: We found no association between SP and chinook events. We observed significantly higher wind speeds and lower atmospheric pressures on days with SP versus days without.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 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 | 0.000 | 0.000 |
| 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".