{"id":"W2901556809","doi":"10.1080/08897077.2018.1528493","title":"3,4-Methylenedioxymethamphetamine (Mdma; Ecstasy) Use and Transitions to Injection Drug Use among Street-Involved Youth","year":2018,"lang":"en","type":"article","venue":"Substance Abuse","topic":"HIV, Drug Use, Sexual Risk","field":"Medicine","cited_by":6,"is_retracted":false,"has_abstract":true,"ca_institutions":"Simon Fraser University; British Columbia Centre on Substance Use; University of British Columbia","funders":"National Institute on Drug Abuse; Canadian Institutes of Health Research; National Institutes of Health","keywords":"MDMA; Ecstasy; Medicine; Hazard ratio; Confidence interval; Poison control; Young adult; Cannabis; Demography; Confounding; Incidence (geometry); Multivariate analysis; Psychiatry; Environmental health; Internal medicine","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":"codex-gemma-dda1882f352a","candidate_categories":["metaepi_narrow"],"consensus_categories":[],"category_scores_codex":[0.0004201944,0.0004296108,0.000555767,0.0004215857,0.0002719084,0.0001309114,0.0001574543,0.000198087,0.00007173],"category_scores_gemma":[0.0002981979,0.0004132868,0.0001125627,0.001112497,0.0004393905,0.001253342,0.00002092291,0.0004077508,0.00009894417],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0001747871,"about_ca_system_score_gemma":0.0000675686,"about_ca_topic_candidate":true,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.001007083,"about_ca_topic_score_gemma":0.06818024,"domain_scores_codex":[0.9972554,0.0001637496,0.0005399368,0.0008227171,0.0005483688,0.0006698459],"domain_scores_gemma":[0.9974714,0.0002174005,0.0001362627,0.0009651894,0.0005318015,0.0006779678],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.001692299,0.0006128261,0.6978751,0.0001240988,0.0002951281,0.0001491344,0.276644,0.00008382608,0.01433694,0.0001229409,0.003687178,0.004376494],"study_design_scores_gemma":[0.01097241,0.003229279,0.6339558,0.001423255,0.001426347,0.00002626457,0.2700615,0.0009870429,0.06818306,0.0001883582,0.007249911,0.002296735],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.994681,0.000179115,0.002823991,0.0002405632,0.000378579,0.0009761482,0.000258652,0.0003593786,0.0001026001],"genre_scores_gemma":[0.991722,0.0003025572,0.005158712,0.0007566318,0.0004889001,0.00005098928,0.0002008122,0.000110953,0.001208445],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.06717316,"threshold_uncertainty_score":0.9998319,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.05151738985718564,"score_gpt":0.2977344392185086,"score_spread":0.246217049361323,"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."}}