{"id":"W2157479928","doi":"10.17269/cjph.105.4119","title":"Electronic cigarettes in Canada: Prevalence of use and perceptions among youth and young adults","year":2014,"lang":"en","type":"article","venue":"Canadian Journal of Public Health","topic":"Smoking Behavior and Cessation","field":"Medicine","cited_by":117,"is_retracted":false,"has_abstract":false,"ca_institutions":"University of Waterloo","funders":"Canadian Cancer Society Research Institute; Canadian Institutes of Health Research","keywords":"Medicine; Young adult; Smoking prevalence; Demography; Quit smoking; Smoking cessation; Environmental health; Gerontology; Population","routes":{"ca_aff":true,"ca_fund":true,"ca_venue":true,"about_ca":true,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.000698668,0.0003368526,0.0004450582,0.001766681,0.003065646,0.002255838,0.0008622101,0.0009596413,0.002161651],"category_scores_gemma":[0.001723393,0.0004972685,0.0008271529,0.003972145,0.0007590692,0.0007736441,0.001001488,0.001358043,0.0003883198],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.018055,"about_ca_system_score_gemma":0.02311243,"about_ca_topic_candidate":true,"about_ca_topic_consensus":true,"about_ca_topic_score_codex":0.9919996,"about_ca_topic_score_gemma":0.9947556,"domain_scores_codex":[0.9989322,0.00006372261,0.000088252,0.00009781611,0.0004637442,0.0003543775],"domain_scores_gemma":[0.9975063,0.0001148129,0.0004062256,0.00002421542,0.001095447,0.0008530889],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.00003834998,0.00008878918,0.9929618,0.00003297589,0.0000250709,0.00006053464,0.002659622,0.00002017695,0.00007989354,0.00005486051,0.000561262,0.003416535],"study_design_scores_gemma":[0.000002784841,0.00002216684,0.9945248,0.00003248832,0.0000139838,0.00003821457,0.00476089,0.00006495858,0.00002346077,0.000009740186,0.0004983866,0.000008182448],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9939751,0.001218803,0.00004770604,0.0006781556,0.00001572593,0.00003671914,0.002123292,0.00000629055,0.001898226],"genre_scores_gemma":[0.996224,0.001352085,0.0001034625,0.0002812629,0.000008981016,0.00001562328,0.0007765691,0.000004612607,0.001233358],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.018055,"threshold_uncertainty_score":0.1309988,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.02942841306682429,"score_gpt":0.2568219261778718,"score_spread":0.2273935131110475,"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."}}