{"id":"W4409529754","doi":"10.1016/j.lanwpc.2025.101548","title":"Changing age profile and incidence of injecting drug use initiation among people in Australia who inject drugs: evidence from two national repeated cross-sectional studies","year":2025,"lang":"en","type":"article","venue":"The Lancet Regional Health - Western Pacific","topic":"HIV, Drug Use, Sexual Risk","field":"Medicine","cited_by":3,"is_retracted":false,"has_abstract":true,"ca_institutions":"Université de Montréal; Centre Hospitalier de l’Université de Montréal","funders":"National Drug and Alcohol Research Centre; National Health and Medical Research Council; Fonds de Recherche du Québec - Santé; Department of Health and Aged Care, Australian Government; National Institute for Health and Care Research","keywords":"Incidence (geometry); Cross-sectional study; Medicine; Drug; Demography; Environmental health; Pharmacology; Sociology; Pathology","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":[0.002639363,0.0002439144,0.0007076047,0.0004543878,0.0003065722,0.00008146776,0.0001948658,0.00009123193,0.00000778577],"category_scores_gemma":[0.001223298,0.0001998322,0.0000588434,0.001018621,0.0003100498,0.0005830813,0.0001404351,0.000588122,0.00000658212],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.000512112,"about_ca_system_score_gemma":0.0004626215,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.005063319,"about_ca_topic_score_gemma":0.0059345,"domain_scores_codex":[0.9968894,0.0004610243,0.0008545283,0.0005461078,0.0007625764,0.0004863928],"domain_scores_gemma":[0.9963744,0.002209659,0.0005195577,0.0003587454,0.0004412469,0.00009635999],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.000388237,0.00003888089,0.940898,0.0005136334,0.00006145772,0.000009932067,0.05689688,0.0001805216,0.0001103132,0.0001242493,0.0004786385,0.0002992478],"study_design_scores_gemma":[0.00118987,0.00008591771,0.9777468,0.003632932,0.00001664316,0.00002214353,0.01552145,0.0007187212,0.0001466594,0.0007517984,0.00002525461,0.0001417848],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.995075,0.001262669,0.00004373,0.002324878,0.0002211256,0.000845117,0.00007186656,0.0000696236,0.00008597496],"genre_scores_gemma":[0.9965392,0.0006290119,0.0002707784,0.0005180531,0.000387695,0.00009731203,0.0001081201,0.00001785601,0.00143195],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.04137542,"threshold_uncertainty_score":0.8148922,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.2124425775259725,"score_gpt":0.4670251340903585,"score_spread":0.2545825565643859,"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."}}