{"id":"W3008212934","doi":"10.1136/tobaccocontrol-2019-055344","title":"Costs of vaping: evidence from ITC Four Country Smoking and Vaping Survey","year":2020,"lang":"en","type":"article","venue":"Tobacco Control","topic":"Smoking Behavior and Cessation","field":"Medicine","cited_by":32,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Waterloo; Ontario Institute for Cancer Research","funders":"National Institute on Drug Abuse; National Health and Medical Research Council; Medical Research Council; Canadian Institutes of Health Research; National Cancer Institute; National Institutes of Health; Ontario Institute for Cancer Research","keywords":"Purchasing; Gallon (US); Unit price; Unit (ring theory); Tobacco control; Cartridge; Business; Nicotine; Economics; Medicine; Public health; Waste management; Marketing; Engineering; Microeconomics; Mathematics","routes":{"ca_aff":true,"ca_fund":true,"ca_venue":false,"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":[0.006450461,0.0006021375,0.001205948,0.0038827,0.0002908802,0.001478431,0.00204921,0.001329954,0.006233031],"category_scores_gemma":[0.04157168,0.0007323397,0.003764328,0.00540859,0.0005074154,0.001616882,0.001320724,0.001689329,0.0005185867],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.001593063,"about_ca_system_score_gemma":0.001778887,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.02954205,"about_ca_topic_score_gemma":0.02502172,"domain_scores_codex":[0.9908977,0.003175573,0.001416286,0.0006574746,0.003392549,0.0004604554],"domain_scores_gemma":[0.9560311,0.01948142,0.01746008,0.0007423877,0.005333487,0.0009514753],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.002681844,0.0004518162,0.8811036,0.01810115,0.009751773,0.0001506833,0.0001507382,0.00112007,0.00004664659,0.0006600088,0.01366638,0.07211538],"study_design_scores_gemma":[0.0003582341,0.0004611226,0.9795278,0.007277288,0.004089227,0.0002961694,0.0002825874,0.0009224374,0.00009725344,0.0004536393,0.006190545,0.00004365263],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.515779,0.3434863,0.001832697,0.007687371,0.000875069,0.0009111995,0.1087423,0.00009272774,0.02059333],"genre_scores_gemma":[0.9123603,0.0658194,0.001036901,0.001430099,0.0003862253,0.0003504081,0.01779139,0.00002747174,0.0007978601],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.02954205,"threshold_uncertainty_score":0.0587402,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.08664204793411114,"score_gpt":0.3056016945116773,"score_spread":0.2189596465775662,"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."}}