The DOI matches its Crossref record; 18 of the 19 references it cites were found in a registry or an index.
A double-blind study evaluating the long-term safety of varenicline for smoking cessation
Abstract
OBJECTIVE: We assessed the safety of long-term varenicline administration for smoking cessation. METHODS: In this randomized, double-blind, multicenter trial, eligible adult smokers (18-75 years) who smoked an average of > or =10 cigarettes/day were randomized to either varenicline 1 mg twice daily (BID) or placebo for 52 weeks. Subjects made weekly clinic visits until week 8, and then every 4 weeks until week 52, with a follow-up visit at week 53. The target quit date was the morning of the week 1 clinic visit. Brief counseling was provided at each visit, and vital signs, adverse events (AEs), and smoking status were documented. Other laboratory measures were collected at specified visits. RESULTS: A total of 251 subjects were randomized to varenicline and 126 to placebo. Approximately half of the subjects in each arm completed the study (53.8% varenicline; 46.8% placebo). Treatment-emergent AEs were observed in 96.4% of varenicline- and 82.5% of placebo-treated subjects during the study. Common varenicline-associated AEs were nausea (40.2%), abnormal dreams (22.7%), and insomnia (19.1%). Most AEs were considered mild or moderate in intensity. AEs leading to discontinuation of varenicline treatment included nausea (7.6%), insomnia (3.2%), and abnormal dreams (2.4%). A single varenicline-related serious AE, bilateral subcapsular cataracts, was observed. At week 52, 7-day point prevalence abstinence rates were 36.7% (varenicline) and 7.9% (placebo). CONCLUSIONS: Varenicline 1 mg BID can be safely administered for up to 1 year. Varenicline was also a more effective smoking cessation aid than placebo throughout the study, supporting both its short- (12-week) and long-term (52-week) efficacy.
Overview
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
In the citing paper
“Three other trials comparing a combination to patch alone have not replicated this result (109–111).”
From Tobacco addiction (2008) · cites this paper as [109]
Citations
Cites
Diagnostic and Statistical Manual of Mental Disorders
Williams, J. B. W., & First, M. B. (2013) · Oxford University Press eBooks · doi:10.1093/acrefore/9780199975839.013.104 · Cited by 109,845
Treating tobacco use and dependence-Clinical practice guideline
Mc, F. (2000) · Medical Entomology and Zoology · Cited by 3,616
The Health Consequences of Smoking: A Report of the Surgeon General
Office on Smoking (2004) · Cited by 2,414
Fagerström, K.-O. (1978) · Addictive Behaviors · doi:10.1016/0306-4603(78)90024-2 · Cited by 2,221
The health consequences of smoking. A report to the Surgeon General: 1971.
Welfare., E. (1971) · Cited by 1,195
Varenicline: An α4β2 Nicotinic Receptor Partial Agonist for Smoking Cessation
Coe, J. W., Brooks, P. R., Vetelino, M. G., Wirtz, M. C., Arnold, E. P., Huang, J., Sands, S. B., Davis, T. I., Lebel, L. A., Fox, C. B., et al. (2005) · Journal of Medicinal Chemistry · doi:10.1021/jm050069n · Cited by 930
Tonstad, S. (2006) · JAMA · doi:10.1001/jama.296.1.64 · Cited by 660
The Effectiveness of the Nicotine Patch for Smoking Cessation
Fiore, M. C. (1994) · JAMA · doi:10.1001/jama.271.24.1940 · Cited by 648
Flagged first, then by citations
1 of the 19 references couldn’t be matched to a known paper.
Research works printed but not linked: 1
- 10.1001/jama.1994.03510480064036 · DOI
Cited by
Sorted by citations
Items 101–184 of 184
Varenicline-induced psychotic depressive episode in a patient with bipolar disorder
Annagür, B. B., & Bez, Y. (2011) · Therapeutic Advances in Psychopharmacology · doi:10.1177/2045125311430111 · Cited by 10
More than Smoke and Patches: The Quest for Pharmacotherapies to Treat Tobacco Use Disorder
Moerke, M. J., McMahon, L. R., & Wilkerson, J. L. (2020) · Pharmacological Reviews · doi:10.1124/pr.119.018028 · Cited by 11
Update on the pharmacologic therapy for chronic obstructive pulmonary disease.
Hanania, N., & Sharafkhaneh, A. (2007) · Clinics in Chest Medicine · doi:10.1016/j.ccm.2007.06.007 · Cited by 18
The smoking cessation drug varenicline improves deficient P20–N40 inhibition in DBA/2 mice
Wildeboer, K. M., & Stevens, K. E. (2011) · Pharmacology Biochemistry and Behavior · doi:10.1016/j.pbb.2011.07.001 · Cited by 9
Challenges and perspectives of tobacco cessation in special groups of patients and populations
Tsikrika, S., Dai, S., Dilektaşlı, A. G., Katsaounou, P. A., & Dağlı, E. (2023) · Breathe · doi:10.1183/20734735.0224-2022 · Cited by 9
Varenicline plus Healthy Lifestyle Intervention for Smoking Cessation in Psychotic Disorders
Castle, D. J., Baker, A., RICHMOND, R. L., Filia, S., Harris, D., & Pirola‐Merlo, A. (2012) · Annals of Clinical Psychiatry · doi:10.1177/104012371202400406 · Cited by 8
Miranda, J. A. R., Ruiz, C. A. J., & Rebollo, J. C. S. (2013) · Clinical Pulmonary Medicine · doi:10.1097/cpm.0b013e31828fda4c · Cited by 8
A Comprehensive Approach to Tobacco Dependence Interventions
Baldassarri, S. R., Toll, B. A., & Leone, F. T. (2015) · The Journal of Allergy and Clinical Immunology In Practice · doi:10.1016/j.jaip.2015.04.007 · Cited by 8
Emerging drugs for the treatment of tobacco dependence
Ebbert, J. O. (2009) · Expert Opinion on Emerging Drugs · doi:10.1517/14728210802623874 · Cited by 8
Hendricks, P. S., Hall, S. M., Tyus, L. R., Thorne, C. B., Lappan, S. N., McMurray, M., Bailey, W. C., Cropsey, K. L., & Baker, T. B. (2016) · Drug and Alcohol Dependence · doi:10.1016/j.drugalcdep.2016.04.022 · Cited by 8
McMahon, L. R. (2019) · Expert Review of Clinical Pharmacology · doi:10.1080/17512433.2019.1570844 · Cited by 8
Breivogel, B., Vuthaj, B., Krumm, B., Hummel, J., Cornell, D. G., & Diehl, A. (2011) · European Addiction Research · doi:10.1159/000329717 · Cited by 7
Tonkin, S., Williams, T. F., Simms, L. J., Tiffany, S. T., Mahoney, M. C., Schnoll, R. A., Cinciripini, P. M., & Hawk, L. W. (2018) · Nicotine & Tobacco Research · doi:10.1093/ntr/nty262 · Cited by 9
Behavioral Interventions in Tobacco Dependence
Leone, F. T., & Evers‐Casey, S. (2009) · Primary Care Clinics in Office Practice · doi:10.1016/j.pop.2009.04.002 · Cited by 7
Clinical utility of varenicline for smokers with medical and psychiatric comorbidity
Ebbert, J. O. (2009) · International Journal of COPD · doi:10.2147/copd.s6300 · Cited by 7
Ock, M., Shin, J. S., & Ra, S. W. (2022) · Patient Preference and Adherence · doi:10.2147/ppa.s344757 · Cited by 6
Partial nicotinic acetylcholine (α4β2) agonists as promising new medications for smoking cessation
Budhiraja, S., & Singh, J. (2008) · Indian Journal of Pharmacology · doi:10.4103/0253-7613.44150 · Cited by 6
Evidence of the effectiveness and safety of first-line smoking cessation pharmacotherapy
Liakoni, E., & Benowitz, N. L. (2021) · European Respiratory Society eBooks · doi:10.1183/2312508x.10002420 · Cited by 6
Smoking Cessation After Brain Damage Does Not Lead to Increased Depression
Tranel, D., McNutt, A., & Bechara, A. (2012) · Cognitive and Behavioral Neurology · doi:10.1097/wnn.0b013e3182492a9c · Cited by 5
Smoking cessation: an economic analysis and review of varenicline
Faulkner, M. A. (2009) · ClinicoEconomics and Outcomes Research · doi:10.2147/ceor.s4223 · Cited by 5
Varenicline: Smoking Cessation in Patients with Medical and Psychiatric Comorbidity
Tonstad, S., & Els, C. (2010) · Clinical Medicine Insights Therapeutics · doi:10.4137/cmt.s4012 · Cited by 5
Tratamiento actual del tabaquismo
Regalado-Piñeda, J., Lara-Rivas, G., Osio-Echánove, J., & Ramírez‐Venegas, A. (2007) · Salud Pública de México · doi:10.1590/s0036-36342007000800018 · Cited by 5
Jiménez-Ruiz, C. A., García-Rueda, M., Muñiz, M. A. M., Sellarés, J., Jiménez-Fuentes, M. A., Asegurado, L. L., Rodríguez, E., Rodríguez-García, C., Armengol, O., Abad, E., et al. (2017) · Monaldi Archives for Chest Disease · doi:10.4081/monaldi.2017.874 · Cited by 5
Zhao, L., Peng, J., Ke, S., & Lee, K. (2024) · Educational Psychology Review · doi:10.1007/s10648-024-09965-z · Cited by 4
Safety of Varenicline in Patients With Cardiovascular Disease
Haber, S. L., Boomershine, V., & Raney, E. C. (2013) · Journal of Pharmacy Practice · doi:10.1177/0897190013504961 · Cited by 4
Vareniclin – medikamentöse Therapie der Tabakabhängigkeit
Tschabitscher, P., Homaier, I., Lichtenschopf, A., & Groman, E. (2009) · Wiener Medizinische Wochenschrift · doi:10.1007/s10354-008-0636-6 · Cited by 4
Tolérance de la varénicline en pratique courante
Dupont, P., Gillet, C., Guérin, M., Kalamarides, S., Larinier, É., Meignan, C., Moreau, A., Guillaumin, C., & Perriot, J. (2009) · La Presse Médicale · doi:10.1016/j.lpm.2009.07.016 · Cited by 4
Smoking and Schizophrenia: Prevalence, Mechanisms and Implications for Treatment
Cather, C., Barr, R. S., & Evins, A. E. (2008) · Clinical Schizophrenia & Related Psychoses · doi:10.3371/csrp.2.1.5 · Cited by 4
Smoking cessation through the utilization of pharmacotherapy
Harrington, K., & Bailey, W. C. (2009) · Expert Review of Respiratory Medicine · doi:10.1586/ers.09.42 · Cited by 4
Zamboni, L., Campagnari, S., Giordano, R., Fusina, F., Carli, S., Congiu, A., Barbon, I., Melchiori, S., Casari, R., Tedeschi, E., et al. (2022) · Frontiers in Psychiatry · doi:10.3389/fpsyt.2022.940100 · Cited by 3
Minian, N., Wong, M., Hafuth, S., Rodak, T., Rahimi, A., Gjomema, D., Rose, J., Zawertailo, L. A., Ratto, M., & Selby, P. L. (2024) · BMC Public Health · doi:10.1186/s12889-024-18139-z · Cited by 4
Aide à l’arrêt du tabagisme chez les personnes âgées
Dupont, P., & Blecha, L. (2011) · NPG. Neurologie, psychiatrie, gériatrie/NPG · doi:10.1016/j.npg.2011.08.001 · Cited by 3
Sleep-Related Disorders in Chronic Pulmonary Disease
Hakim, A. D., & Littner, M. R. (2011) · Elsevier eBooks · doi:10.1016/b978-1-4377-1703-7.10021-0 · Cited by 3
Seo, Y. B., Lee, H., Paek, Y., Lee, H., Lee, C. M., Lee, E. S., Kimm, H., An, H.-J., Bae, E.-J., Kim, J. S., et al. (2025) · Journal of Korean Medical Science · doi:10.3346/jkms.2025.40.e299 · Cited by 3
Eficacia y seguridad de vareniclina en el abandono del tabaquismo
Reina, S. S., Lozano, P. V., García-Tenorio, R. S., Nieto, J. C. M., Orive, J. I. D. G., & Ruiz, C. A. J. (2012) · Revista de Fomento Social · doi:10.1016/s1576-9895(12)70132-7 · Cited by 2
Ardelt, A. A. (2009) · Humana Press eBooks · doi:10.1007/978-1-60327-125-7_17 · Cited by 2
Varenicline and Its Role in Smoking Cessation
Kapoor, S. N. (2008) · Preventive Cardiology · doi:10.1111/j.1751-7141.2008.08258.x · Cited by 2
Diagnosis of abuse and addiction
Lesch, O., Walter, H., Wetschka, C., Hesselbrock, M. N., & HESSELBROCK, V. M. (2011) · Springer eBooks · doi:10.1007/978-3-7091-0146-9_5 · Cited by 2
Die medikamentöse Therapie von Missbrauch und Abhängigkeiten (Tabak, Alkohol und illegale Drogen)
Lesch, O., Platz, W. E., Soyka, M., & Walter, H. (2010) · Springer eBooks · doi:10.1007/978-3-211-85473-0_18 · Cited by 2
Comparative Effectiveness of Smoking Cessation Medications among Schizophrenic Smokers
Wu, I.-H., Chen, H., Bordnick, P. S., Essien, E. J., Johnson, M. L., Peters, R. J., Vadhariya, A., & Abughosh, S. (2018) · Trends journal of sciences research · doi:10.31586/pharmaceuticalhealth.0303.01 · Cited by 2
Tobacco Use Disorder and Treatment
Fucito, L. M., & Baldassarri, S. R. (2018) · Elsevier eBooks · doi:10.1016/b978-0-323-48565-4.00012-6 · Cited by 1
Aryanpur, M., Ghorbani, R., Rashno, S., Heydari, G., Dizaji, M. K., Hessami, Z., & Ghorbani, N. (2024) · Addiction and Health · doi:10.34172/ahj.2024.1328 · Cited by 1
New Insight into Alcohol and Nicotine Addiction
Vitali, M., Battagliese, G., & Ceccanti, M. (2016) · Elsevier eBooks · doi:10.1016/b978-0-12-800634-4.00085-8 · Cited by 1
A Systematic Review Investigating the Impact of Modified Varenicline Regimens on Smoking Cessation
Drovandi, A. D., Teague, P.-A., Glass, B. D., & Malau‐Aduli, B. S. (2017) · The Journal of Smoking Cessation · doi:10.1017/jsc.2017.3 · Cited by 1
Chandler, M. A., & Rennard, S. I. (2009) · Elsevier eBooks · doi:10.1016/b978-0-12-374001-4.00047-x · Cited by 1
Drovandi, A. D., Teague, P.-A., Glass, B. D., & Malau‐Aduli, B. S. (2017) · The Journal of Smoking Cessation · doi:10.1017/jsc.2017.17 · Cited by 1
Therapeutic Strategies in Alcohol and Tobacco Addiction
Lesch, O., Walter, H., Wetschka, C., Hesselbrock, M. N., HESSELBROCK, V. M., & Pombo›, S. (2020) · Springer eBooks · doi:10.1007/978-3-030-41941-7_9 · Cited by 1
Zhu, N., Lin, S., Dai, L., Yu, H., Xu, N., Huang, W., & Yu, X. (2022) · Tobacco Induced Diseases · doi:10.18332/tid/145993 · Cited by 1
Sıçanlarda Bupropion ve Vareniklinin Morfin Yoksunluğu Sendromu Üzerine Etkileri
Yunusoğlu, O., KÖSE, Ç., Özyazgan, S., Shahzadi, A., Demir, B., Önal, B., & Akkan, A. G. (2022) · Abant Medical Journal · doi:10.47493/abantmedj.1120849 · Cited by 1
Psychopharmacology for the Addicted Adolescent
FONG, T. W. (2012) · doi:10.1002/9781118340851.ch32 · Cited by 1
Pharmacology of drugs used to treat smoking cessation and obesity
Johns, K., Frohlich, J., & Bondy, G. P. (2008) · Canadian Journal of Cardiology · doi:10.1016/s0828-282x(08)71034-1 · Cited by 1
Mroziewicz, M. (2010) · TSpace (University of Toronto) · Cited by 1
Medical Therapy for Chronic Obstructive Pulmonary Disease in 2007
Ingenito, E. P. (2007) · Seminars in Thoracic and Cardiovascular Surgery · doi:10.1053/j.semtcvs.2007.06.003
Villain, M., Evans, J., Cirimele, V., & Kintz, P. (2008) · Annales de Toxicologie Analytique · doi:10.1051/ata/2009034
Pharmacologic Treatments for Smoking Cessation
Jimenez-Ruiz, C. A., Fagerström, K. O., & Miranda, J. A. R. (2008) · Clinical Pulmonary Medicine · doi:10.1097/cpm.0b013e3181672252
Smoking cessation in patients with chronic obstructive pulmonary disease and lung cancer
Jimenez-Ruiz, C. A. (2008) · Hot Topics in Respiratory Medicine · doi:10.4147/htr-080815
Therapeutic Options in Smoking Cessation
Galant, L. M. (2010) · Clinical Medicine Reviews in Therapeutics · doi:10.4137/cmrt.s5099
The Effects of Varenicline on Neurocognitive Function in Non-smokers with Schizophrenia
Kozak, K. (2016) · TSpace (University of Toronto)
Staios, G. (2011) · TSpace (University of Toronto)
Camacho, F. J., Lopez, F., Canizares, A., & Zafrilla, P. (2019) · Pharmacy & Pharmacology International Journal · doi:10.15406/ppij.2019.07.00247
Varenicline for Long Term Abstinence in Acute COPD- the Dilemma Continues
Rathi, V., Hadda, V., Mittal, S., & Mohan, A. (2020) · COPD Journal of Chronic Obstructive Pulmonary Disease · doi:10.1080/15412555.2020.1731792
Manic episode associated with Varenicline treatment in a patient with a history of depression (eng)
Çankaya, P. K., Karagüzel, E. Ö., & Ti̇ryaki̇, A. (2020) · Journal of Clinical Psychiatry · doi:10.5505/kpd.2020.61214
Agents for Treatment of Withdrawal and Dependency: Varenicline
Jacob, C. C., & Polak, T. T. (2020) · Springer eBooks · doi:10.1007/978-3-319-56015-1_350-1
Diagnose von Missbrauch und Abhängigkeit
Lesch, O., Walter, H., Hesselbrock, M. N., & HESSELBROCK, V. M. (2020) · Springer eBooks · doi:10.1007/978-3-662-60284-3_5
Therapeutische Strategien bei Alkohol- und Tabakabhängigkeit
Lesch, O., Walter, H., Pombo›, S., HESSELBROCK, V. M., & Hesselbrock, M. N. (2020) · Springer eBooks · doi:10.1007/978-3-662-60284-3_9
Patterson, F., Schnoll, R. A., & Lerman, C. E. (2010) · Springer eBooks · doi:10.1007/978-1-4419-0338-9_49
Current awareness: Pharmacoepidemiology and drug safety
(2007) · Pharmacoepidemiology and Drug Safety · doi:10.1002/pds.1482
Ardelt, A. A. (2018) · Contemporary medical imaging · doi:10.1007/978-3-319-66779-9_16
The Pharmacist's Role in Smoking Cessation
Wick, J. Y. (2008) · The Consultant Pharmacist · doi:10.4140/tcp.n.2008.68
Diagnosis of Abuse and Addiction
Lesch, O., Walter, H., Wetschka, C., Hesselbrock, M. N., HESSELBROCK, V. M., & Pombo›, S. (2020) · Springer eBooks · doi:10.1007/978-3-030-41941-7_5
Health recommender systems for behavior change
Hors-Fraile, S. (2022) · Research Publications (Maastricht University) · doi:10.26481/dis.20220324sh
Agents for Treatment of Withdrawal and Dependency: Varenicline
Jacob, C. C., & Polak, T. T. (2022) · Springer eBooks · doi:10.1007/978-3-030-62059-2_350
Harrigan, M. R., & Deveikis, J. P. (2023) · Contemporary medical imaging · doi:10.1007/978-3-031-45598-8_16
Persistent Anhedonia After Intermittent Long-Access Nicotine Self-Administration in RatsPreprint
Chellian, R., Behnood‐Rod, A., & Bruijnzeel, A. W. (2025) · bioRxiv (Cold Spring Harbor Laboratory) · doi:10.1101/2025.03.19.644137
Palombo, P., Akana, N., Bowen, A., Schmidt, A., Ryan, R., Hovland, S. E., Stark, B. C., Rodin, N. M., Chaytor, N. S., McDonell, M. G., et al. (2025) · Contemporary Clinical Trials · doi:10.1016/j.cct.2025.108189
Falk, J. (2014) · eDiss (Georg-August-Universität Göttingen) · doi:10.53846/goediss-4689
Acute Ischaemic Stroke Agnieszka Anna Ardelt
Harrigan, M. R., Deveikis, J. P., & Ardelt, A. A. (2012) · Humana Press eBooks · doi:10.1007/978-1-61779-946-4_17
Minian, N., Wong, M., Hafuth, S., Rodak, T., Rahimi, A., Gjomema, D., Rose, J., Zawertailo, L. A., Ratto, M., & Selby, P. (2024) · Figshare · doi:10.6084/m9.figshare.26688503
Minian, N., Wong, M., Hafuth, S., Rodak, T., Rahimi, A., Gjomema, D., Rose, J., Zawertailo, L. A., Ratto, M., & Selby, P. (2024) · Figshare · doi:10.6084/m9.figshare.26688506
Minian, N., Wong, M., Hafuth, S., Rodak, T., Rahimi, A., Gjomema, D., Rose, J., Zawertailo, L. A., Ratto, M., & Selby, P. (2024) · Figshare · doi:10.6084/m9.figshare.26688509
Chellian, R., Huisman, G., & Bruijnzeel, A. W. (2026) · bioRxiv (Cold Spring Harbor Laboratory) · doi:10.64898/2026.03.31.715632
Li, X., Zeng, L.-L., Jiang, X.-Q., Yao, J., Song, L.-J., Xu, J.-H., Teng, J.-F., Liu, S., Wu, B., & Hu, K.-H. (2026) · ACS Chemical Neuroscience · doi:10.1021/acschemneuro.5c00860
Progressive withdrawal-related reward deficits after nicotine self-administration in rats
Chellian, R., Behnood‐Rod, A., & Bruijnzeel, A. W. (2026) · Nicotine & Tobacco Research · doi:10.1093/ntr/ntag096
Chellian, R., Huisman, G., Caglayan, L. S., & Bruijnzeel, A. W. (2026) · Frontiers in Pharmacology · doi:10.3389/fphar.2026.1883945
Metadata
- Authors
- Williams, K. E., Reeves, K. R., Billing, C. B., Pennington, A. M., & Gong, J.
- Affiliations
- Pfizer (United States) (US)
- Corresponding author
- Williams, Kathryn E.
- Venue
- Current Medical Research and Opinion
- Publisher
- Informa Healthcare
- Published
- 2007-03-05
- Volume
- 23
- Issue
- 4
- Pages
- 793-801
- ISSN
- 0300-7995 (ISSN-L)
- 1473-4877
- OpenAlex
- W2133053824
- Cited by
- 184
- References
- 19
- Citations by year
- 2026: 4 · 2025: 3 · 2024: 7 · 2023: 6 · 2022: 6 · 2021: 5 · 2020: 9 · 2019: 4 · 2018: 5 · 2017: 4 · 2016: 14 · 2015: 7 · 2014: 5 · 2013: 7 · 2012: 11
- FWCI
- 15.96
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Current Medical Research and Opinion (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Smoking Behavior and Cessation
- Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Toxicology › Pharmacovigilance and Adverse Drug Reactions
- Health Sciences › Medicine › Epidemiology › Substance Abuse Treatment and Outcomes
- Keywords
- varenicline, smoking cessation, long-term safety, adverse events, nausea, insomnia, nicotine dependence, smoking abstinence, nicotine receptor partial agonist
- MeSH terms
- Varenicline, Smoking Prevention, Adolescent, Adult, Aged, Benzazepines, Double-Blind Method, Female, Humans, Male, Middle Aged, Placebos, Quinoxalines, Time, Time Factors, Smoking Cessation, Treatment Outcome
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review