{"id":"W4411454737","doi":"10.1038/s41370-025-00784-0","title":"Probing sources of strontium exposure in pregnant individuals living near unconventional oil and gas wells using urinary 87Sr/86Sr isotope ratios","year":2025,"lang":"en","type":"article","venue":"Journal of Exposure Science & Environmental Epidemiology","topic":"Radioactive contamination and transfer","field":"Environmental Science","cited_by":0,"is_retracted":false,"has_abstract":true,"ca_institutions":"The Scarborough Hospital; University of Toronto; Université du Québec à Montréal; Université de Montréal; Centre Intégré Universitaire de Santé et de Services Sociaux du Centre-Sud-de-l'Île-de-Montréal","funders":"Canadian Institutes of Health Research","keywords":"Urine; Intraclass correlation; Strontium; Population; Urinary system; Isotopes of strontium; Chemistry; Environmental chemistry; Mineralogy; Animal science; Medicine; Internal medicine; Environmental health; Chromatography; Biology; Reproducibility","routes":{"ca_aff":true,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"codex-gemma-dda1882f352a","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.004214778,0.0002118263,0.0005468377,0.0002645422,0.0002649293,0.0000285298,0.0004506026,0.0001202263,0.0004044114],"category_scores_gemma":[0.0003814399,0.0001812713,0.0001287039,0.000338735,0.00205853,0.0009072354,0.0002585454,0.000352163,0.000004781975],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0004047337,"about_ca_system_score_gemma":0.0001077561,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.00004437925,"about_ca_topic_score_gemma":0.00001265211,"domain_scores_codex":[0.9970185,0.0005506073,0.001147964,0.0004234254,0.0004274709,0.0004320112],"domain_scores_gemma":[0.9985273,0.0005044515,0.0006243675,0.0001843732,0.00001346496,0.0001460187],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0000249583,0.0002881809,0.9300904,0.00001940154,0.00002413096,0.00001088183,0.001001012,0.01051583,0.04957482,0.0001836462,0.00001333927,0.008253386],"study_design_scores_gemma":[0.0006978225,0.0005628206,0.9925379,0.0003234895,0.00003841326,0.0001690697,0.0008346991,0.001582254,0.002135563,0.0004866798,0.0004644462,0.0001668187],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9960704,0.001302313,0.001209261,0.0004008593,0.0002340009,0.0001280096,0.00000698465,0.000004082397,0.000644125],"genre_scores_gemma":[0.9954069,0.0004018189,0.003737371,0.0002117956,0.00002620998,0.000004631816,0.000001112482,0.000008968098,0.0002011374],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.06244751,"threshold_uncertainty_score":0.7584741,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01730662223481104,"score_gpt":0.2660863319453572,"score_spread":0.2487797097105461,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}