{"doi":"10.1037/pha0000417","title":"Tobacco-use behavior and toxicant exposure among current dual users of electronic cigarettes and tobacco cigarettes.","abstract":"Electronic cigarette (e-cigarette) use continues to grow with most users reporting concurrent cigarette smoking, but few studies have focused on tobacco use and toxicant exposure among naturalistic dual-using populations. This controlled clinical laboratory study examined how dual versus exclusive use of e-cigarettes and cigarettes and no tobacco/nicotine affected behavioral, physiological, and subjective measures among current dual users. Twenty-two participants identifying as cigarette (≥ 10 cigarettes per day [CPD]) and e-cigarette (≥ 3 days/week) users of \"cig-a-like\" e-cigarettes completed four 5-day outpatient conditions, which differed by their own brand of products used ad libitum: (a) cigarette and e-cigarette (dual), (b) cigarette-only, (c) e-cigarette-only, and (d) no tobacco/nicotine. Primary outcomes included daily tobacco use, expired air carbon monoxide (CO), and urinary cotinine and NNAL. Linear mixed models with pairwise comparisons (Bonferroni corrected) were performed (p < .05). CPD did not differ significantly between dual and cigarette-only use, but e-cigarette use and liquid consumed increased significantly during e-cigarette-only relative to dual use. Relative to dual use, expired air CO did not differ during cigarette-only and was significantly lower during e-cigarette-only use. Urinary cotinine was significantly lower during e-cigarette-only use relative to dual and cigarette-only use, while urinary NNAL did not differ between the nicotine-containing conditions. In summary, among current dual users, e-cigarettes in combination with cigarettes did not reduce CPD relative to exclusive cigarette use or toxicant exposure relative to exclusive use of either product. However, exclusive e-cigarette use did reduce CO and cotinine, highlighting the benefits of cigarette cessation. (PsycInfo Database Record (c) 2021 APA, all rights reserved).","journal":"Experimental and Clinical Psychopharmacology","year":2020,"id":87582,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":11,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9546,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2020-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":445266,"name":"Rebecca Lester","orcid":"0000-0003-0923-0630","position":1,"is_corresponding":false},{"id":433377,"name":"Alyssa K Rudy","orcid":null,"position":2,"is_corresponding":false},{"id":432748,"name":"Cosima Hoetger","orcid":"0000-0002-1858-2489","position":3,"is_corresponding":false},{"id":445267,"name":"Megan Scott","orcid":"0000-0003-4166-1908","position":4,"is_corresponding":false},{"id":445268,"name":"Makeda K. Austin","orcid":"0000-0002-9027-7219","position":5,"is_corresponding":false},{"id":427952,"name":"Alison Montpetit","orcid":"0000-0002-4418-6025","position":6,"is_corresponding":false},{"id":446317,"name":"Thokozeni Lipato","orcid":null,"position":7,"is_corresponding":false},{"id":436327,"name":"Amanda L. Graham","orcid":"0000-0003-3036-9653","position":8,"is_corresponding":false},{"id":432752,"name":"Andrew J. Barnes","orcid":"0000-0002-0357-3934","position":9,"is_corresponding":false},{"id":345090,"name":"Thomas Eissenberg","orcid":"0000-0002-8277-5437","position":10,"is_corresponding":false},{"id":432753,"name":"Caroline O. Cobb","orcid":"0000-0003-3258-252X","position":0,"is_corresponding":true}],"reference_count":38,"raw_metadata":null,"created_at":"2026-07-18T22:00:29.831859Z","pmid":"32658532","pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}