ASSOCIATION BETWEEN PERSONAL PM10 EXPOSURE AND PULMONARY FUNCTION IN HEALTHY VOLUNTEERS FROM A SEMI-ARID CITY ON THE US-MEXICAN BORDER
Bibliographic record
Abstract
Most studies about associations between exposures to PM10 and decreased pulmonary function do not consider people in good respiratory health and immediate (hours) effects of personal PM10 exposures. This study evaluated associations between personal PM10 exposures and pulmonary function (i.e., forced expiratory volume in one second or FEV1, forced vital capacity or FVC, and FEV1/FVC) in 97 healthy adult residents of Mexicali, Baja California, Mexico. Subjects used a personal environmental monitor that sampled PM10 every 5 min during the 24 h of their daily activities. Associations of personal-PM10 and pulmonary function were analyzed using multiple linear and linearlog regressions, with correction of serial autocorrelation, controlling for temperature, relative humidity, age, height, weight, body mass index, gender, and time. The largest statistically significant association was found between PM10 and FEV1, adjusting for age, height, and gender. FEV1 decreased -56.0 mL (95 % CI: -107.0, -5.0 mL) per each increment of 10 g/m 3 of PM10 in air or -50.0 mL (95 % CI: -92.0 mL, -9.0 mL) per each 20 % increase in personal-PM10-concentration, when using linear or linear-log regression, respectively. No significant associations were found for FVC or FEV1/FVC ratio. The study showed that personal PM10 exposure in healthy adult volunteers from Mexicali was associated with small but significant decreases of FEV1; more significant when assessing the PM10 levels recorded sixteen hours before.
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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) | 0.000 | 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 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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".