Association between psychosocial stress and hypertension: A systematic review and meta-analysis
Abstract
AIM: The etiology of hypertension is various and complex, involving both genetic and behavioral factors. The relationship between psychosocial stress and hypertension has been hypothesized. More and more people experience increased anxiety, depression, and chronic psychosocial stress brought on by globalization, cultural changes, socioeconomic changes, and stress at the work place. Although a plethora of studies have investigated the interaction between psychosocial stress and hypertension, this relationship is still contentious. The objective of this study is twofold. First, a review of recent advancements in our understanding of the relationship between psychosocial stress and hypertension. Second, a meta-analysis aiming to assess the relationship between chronic psychosocial stress and blood pressure. METHODS: We systematically searched and identified relevant studies from five databases, including PubMed, Cochrane Library, China National Knowledge Infrastructure (CNKI), CQVIP, and the Wanfang Database until April 2016. Eleven studies encompassing 5696 participants were included in the final analysis. RESULTS: Data showed that psychosocial stress was associated with an increased risk of hypertension (OR = 2.40, 95% CI = 1.65-3.49), and hypertensive patients had a higher incidence of psychosocial stress compared to normotension patients (OR = 2.69, 95% CI = 2.32-3.11). Based on our meta-analysis, chronic psychosocial stress may be a risk factor for hypertension. CONCLUSION: The few cohort and case-control studies on the association between psychosocial stress and hypertension employed variable definition of stressors and the responses, making the meta-analysis difficult. Although we found an association between chronic psychosocial stress and hypertension, more studies are needed to confirm this relationship.
Integrity signals
Registry
Cites
Statistics
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?
Elevated blood pressure is an excellent clinical sign in many cardiovascular diseases, but by itself it does not provide information regarding mechanisms of any given disorder.
“However, despite blood pressure’s association with many unique dis- eases, by itself it does not provide information regarding the mechanisms of any given disorder.”
From Methods and challenges for assessing heterogeneity (2020) · cites this paper as [44]
Cites
Stang, A. (2010) · European Journal of Epidemiology · doi:10.1007/s10654-010-9491-z · Cited by 17,396 · see citing works
Global burden of hypertension: analysis of worldwide data
Kearney, P. M., Whelton, M., Reynolds, K., Muntner, P., Whelton, P. K., & He, J. (2005) · The Lancet · doi:10.1016/s0140-6736(05)17741-1 · Cited by 8,578 · see citing works
Global burden of hypertension: analysis of worldwide data
(2005) · doi:10.1016/s0140-6736(05)70151-3 · Cited by 3,289 · see citing works
Ridker, P. M., Rifai, N., Stampfer, M. J., & Hennekens, C. H. (2000) · Circulation · doi:10.1161/01.cir.101.15.1767 · Cited by 2,429 · see citing works
Global burden of blood-pressure-related disease, 2001
Lawes, C. M. M., Hoorn, S. V., & Rodgers, A. (2008) · The Lancet · doi:10.1016/s0140-6736(08)60655-8 · Cited by 2,330 · see citing works
International Journal of Geriatric Psychiatry
Robinson, L., Hutchings, D., Dickinson, H. O., Corner, L., Beyer, F., Finch, T. L., Hughes, J., Vanoli, A., Ballard, C. G., & Bond, J. (2006) · International Journal of Geriatric Psychiatry · doi:10.1002/(issn)1099-1166 · Cited by 1,301 · see citing works
Overview of Epidemiology and Contribution of Obesity to Cardiovascular Disease
Bastien, M., Poirier, P., Lemieux, I., & Després, J.-P. (2014) · Progress in Cardiovascular Diseases · doi:10.1016/j.pcad.2013.10.016 · Cited by 1,125 · see citing works
Sex/Gender Differences in Cardiovascular Disease Prevention: What a Difference a Decade Makes
Mosca, L., Barrett-Connor, E., & Kass Wenger, N. (2011) · Circulation · doi:10.1161/circulationaha.110.968792 · Cited by 1,045 · see citing works
Gender differences in coronary heart disease
Maas, A. H. E. M., & Appelman, Y. (2010) · Netherlands Heart Journal · doi:10.1007/s12471-010-0841-y · Cited by 992 · see citing works
Reduced Heart Rate Variability and New-Onset Hypertension
Singh, J. P., Larson, M. G., Tsuji, H., Evans, J. C., O’Donnell, C. J., & Levy, D. A. (1998) · Hypertension · doi:10.1161/01.hyp.32.2.293 · Cited by 561 · see citing works
Siegrist, J., Peter, R., Junge, A., Cremer, P., & Seidel, D. (1990) · Social Science & Medicine · doi:10.1016/0277-9536(90)90234-j · Cited by 525 · see citing works
Chronic Psychosocial Stress and Hypertension
Spruill, T. M. (2010) · Current Hypertension Reports · doi:10.1007/s11906-009-0084-8 · Cited by 456 · see citing works
Stroke Epidemiology: Advancing Our Understanding of Disease Mechanism and Therapy
Ovbiagele, B. I., & Nguyen‐Huynh, M. N. (2011) · Neurotherapeutics · doi:10.1007/s13311-011-0053-1 · Cited by 434 · see citing works
Does psychosocial stress cause hypertension? A systematic review of observational studies
Sparrenberger, F., Cichelero, F. T., Ascoli, A. M., Fonseca, F. P., Weiss, G., Berwanger, O., Fuchs, S. C., Moreira, L. B., & Fuchs, F. D. (2009) · Journal of Human Hypertension · doi:10.1038/jhh.2008.74 · Cited by 311 · see citing works
Cardiovascular reactivity, stress, and physical activity
Huang, C., Webb, H. E., Zourdos, M. C., & Acevedo, E. O. (2013) · Frontiers in Physiology · doi:10.3389/fphys.2013.00314 · Cited by 305 · see citing works
Saavedra, J. M., Sánchez-Lemus, E., & Benický, J. (2010) · Psychoneuroendocrinology · doi:10.1016/j.psyneuen.2010.10.001 · Cited by 260 · see citing works
Lucini, D., Fede, G. D., Parati, G., & Pagani, M. (2005) · Hypertension · doi:10.1161/01.hyp.0000185147.32385.4b · Cited by 252 · see citing works
Anxiety Disorders, Hypertension, and Cardiovascular Risk: A Review
Player, M. S., & Peterson, L. E. (2011) · The International Journal of Psychiatry in Medicine · doi:10.2190/pm.41.4.f · Cited by 249 · see citing works
Psychosocial Predictors of Hypertension in Men and Women
Levenstein, S., Smith, M., & Kaplan, G. A. (2001) · Archives of Internal Medicine · doi:10.1001/archinte.161.10.1341 · Cited by 239 · see citing works
Guwatudde, D., Mutungi, G. N., Wesonga, R., Kajjura, R., Kasule, H., Muwonge, J., Ssenono, V., & Bahendeka, S. (2015) · PLoS ONE · doi:10.1371/journal.pone.0138991 · Cited by 232 · see citing works
Pastor‐Barriuso, R., Banegas, J. R., Damián, J., Appel, L. J., & Güallar, E. (2003) · Annals of Internal Medicine · doi:10.7326/0003-4819-139-9-200311040-00007 · Cited by 207 · see citing works
Socioeconomic status and stress-induced increases in interleukin-6
Brydon, L., Edwards, S., Mohamed‐Ali, V., & Steptoe, A. (2003) · Brain Behavior and Immunity · doi:10.1016/j.bbi.2003.09.011 · Cited by 189 · see citing works
Increased Sympathetic Nerve Activity in Renovascular Hypertension
Johansson, M., Elam, M., Rundqvist, B., Eisenhofer, G., Herlitz, H., Lambert, G., & Friberg, P. (1999) · Circulation · doi:10.1161/01.cir.99.19.2537 · Cited by 172 · see citing works
CHRONIC MENTAL STRESS IS A CAUSE OF ESSENTIAL HYPERTENSION: PRESENCE OF BIOLOGICAL MARKERS OF STRESS
Esler, M., Eikelis, N., Schlaich, M., Lambert, G., Alvarenga, M., Dawood, T., Kaye, D., Barton, D., Pier, C., Guo, L., et al. (2008) · Clinical and Experimental Pharmacology and Physiology · doi:10.1111/j.1440-1681.2008.04904.x · Cited by 170 · see citing works
Hypertension Awareness and Psychological Distress
Hamer, M., Batty, G. D., Stamatakis, E. A., & Mika Kivimaki, B. (2010) · Hypertension · doi:10.1161/hypertensionaha.110.153775 · Cited by 168 · see citing works
Schwartz, J. E., Pickering, T. G., & Landsbergis, P. A. (1996) · Journal of Occupational Health Psychology · doi:10.1037//1076-8998.1.3.287 · Cited by 166 · see citing works
Depression increases the risk for uncontrolled hypertension.
Rubio-Guerra, A. F., Rodríguez-López, L., Vargas‐Ayala, G., Huerta-Ramírez, S., Castro-Serna, D., & Lozano-Nuevo, J. J. (2013) · Europe PMC (PubMed Central) · Cited by 158 · see citing works
Prehypertension during Young Adulthood and Coronary Calcium Later in Life
Pletcher, M. J., Bibbins-Domingo, K. B., Lewis, C. E., Wei, G. S., Sidney, S., Carr, J. J., Vittinghoff, E., McCulloch, C. E., & Hulley, S. B. (2008) · Annals of Internal Medicine · doi:10.7326/0003-4819-149-2-200807150-00005 · Cited by 157 · see citing works
Effects of Job Strain on Blood Pressure: A Prospective Study of Male and Female White-Collar Workers
Guímont, C., Brisson, C., Dagenais, G. R., Milot, A., Vézina, M., Mâsse, B. R., Moisan, J., Laflamme, N., & Blanchette, C. (2006) · American Journal of Public Health · doi:10.2105/ajph.2004.057679 · Cited by 156 · see citing works
Associations between mental disorders and subsequent onset of hypertension
Stein, D. J., Aguilar‐Gaxiola, S., Alonso, J., Bruffaerts, R., de Jonge, P., Liu, Z., Caldas‐de‐Almeida, J. M., O’Neill, S. M., Viana, M. C., Al-Hamzawi, A. O., et al. (2013) · General Hospital Psychiatry · doi:10.1016/j.genhosppsych.2013.11.002 · Cited by 151 · see citing works
Grimsrud, A., Stein, D. J., Seedat, S., Williams, D. R., & Myer, L. (2009) · PLoS ONE · doi:10.1371/journal.pone.0005552 · Cited by 143 · see citing works
Blood pressure and symptoms of depression and anxiety: a prospective study
Shinn, E. H. (2001) · American Journal of Hypertension · doi:10.1016/s0895-7061(01)01304-8 · Cited by 137 · see citing works
Increases in job strain are associated with incident hypertension in the CARDIA study
Markovitz, J. H., Matthews, K. A., Whooley, M. A., Lewis, C. E., & Greenlund, K. J. (2004) · Annals of Behavioral Medicine · doi:10.1207/s15324796abm2801_2 · Cited by 130 · see citing works
Meyer, C. M., Armenian, H. K., Eaton, W. W., & Ford, D. E. (2004) · Journal of Affective Disorders · doi:10.1016/j.jad.2004.06.004 · Cited by 127 · see citing works
Ginty, A. T., Carroll, D., Roseboom, T. J., Phillips, A. C., & de Rooij, S. R. (2012) · Journal of Human Hypertension · doi:10.1038/jhh.2012.18 · Cited by 117 · see citing works
Schwartz, J. E., Pickering, T. G., & Landsbergis, P. A. (1996) · Journal of Occupational Health Psychology · doi:10.1037/1076-8998.1.3.287 · Cited by 116 · see citing works
Yudkin, J. S., Yajnik, C. S., Mohamed‐Ali, V., & Bulmer, K. (1999) · Diabetes Care · doi:10.2337/diacare.22.2.363 · Cited by 113 · see citing works
Prevalence of distress, comorbid conditions and well being in the general population
Wiltink, J., Beutel, M. E., Till, Y., Ojeda, F., Wild, P. S., Münzel, T. F., Blankenberg, S., & Michal, M. (2010) · Journal of Affective Disorders · doi:10.1016/j.jad.2010.10.041 · Cited by 101 · see citing works
Meta-Analysis of Cohort Studies of Baseline Prehypertension and Risk of Coronary Heart Disease
Shen, L., Ma, H., Xiang, M., & Wang, J. (2013) · The American Journal of Cardiology · doi:10.1016/j.amjcard.2013.03.023 · Cited by 98 · see citing works
Paterniti, S., Alpérovitch, A., Ducimetière, P., Dealberto, M.-J., Lépine, J., & Bisserbe, J. C. (1999) · Psychosomatic Medicine · doi:10.1097/00006842-199901000-00013 · Cited by 93 · see citing works
Lambert, É., & Lambert, G. W. (2011) · Current Hypertension Reports · doi:10.1007/s11906-011-0186-y · Cited by 93 · see citing works
Effects of Psychological Stress on Hypertension in Middle-Aged Chinese: A Cross-Sectional Study
Hu, B., Liu, X., Yin, S., Fan, H., Feng, F., & Yuan, J. (2015) · PLoS ONE · doi:10.1371/journal.pone.0129163 · Cited by 88 · see citing works
The association of psychosocial factors and depression with hypertension among older adults
Bosworth, H. B., Bartash, R. M., Olsen, M. K., & Steffens, D. C. (2003) · International Journal of Geriatric Psychiatry · doi:10.1002/gps.1026 · Cited by 78 · see citing works
Clays, E., Leynen, F., Bacquer, D. D., et al. (2007) · Journal of Occupational and Environmental Medicine · doi:10.1097/jom.0b013e31803b94e2 · Cited by 77 · see citing works
Current role of neprilysin inhibitors in hypertension and heart failure.
von Lueder, T., Atar, D., & Krum, H. (2014) · Pharmacology and Therapeutics · doi:10.1016/j.pharmthera.2014.05.002 · Cited by 76 · see citing works
Krause, E. G., de Kloet, A. D., Scott, K. A., Flak, J. N., Jones, K., Smeltzer, M. D., Ulrich‐Lai, Y. M., Woods, S. C., Wilson, S. P., Reagan, L. P., et al. (2011) · Journal of Neuroscience · doi:10.1523/jneurosci.0892-11.2011 · Cited by 76 · see citing works
Butler, C., Tull, E. S., Chambers, E. C., & Taylor, J. (2002) · PubMed Central · Cited by 75 · see citing works
The Impact of Mood and Anxiety Disorders on Incident Hypertension at One Year
Bacon, S., Campbell, T. S., Arsenault, A., & Lavoie, K. (2014) · International Journal of Hypertension · doi:10.1155/2014/953094 · Cited by 74 · see citing works
Role of central blood volume in hyperkinetic borderline hypertension.
Ellis, C. N., & Julius, S. (1973) · Heart · doi:10.1136/hrt.35.4.450 · Cited by 72 · see citing works
Tobe, S. W., KISS, A., SAINSBURY, S., JESIN, M., Geerts, R., & Baker, B. (2007) · American Journal of Hypertension · doi:10.1016/j.amjhyper.2006.07.011 · Cited by 72 · see citing works
Groeschel, M., & Braam, B. G. (2010) · American Journal of Physiology-Renal Physiology · doi:10.1152/ajprenal.00208.2010 · Cited by 69 · see citing works
Hypertensive Response to Acute Stress Is Attenuated in Interleukin-6 Knockout Mice
Lee, D. L., Leite, R., Fleming, C., Pollock, J. S., Webb, R. C., & Brands, M. W. (2004) · Hypertension · doi:10.1161/01.hyp.0000139913.56461.fb · Cited by 69 · see citing works
DiBona, G. F., & Jones, S. Y. (2001) · Hypertension · doi:10.1161/01.hyp.37.4.1114 · Cited by 68 · see citing works
Association of hypertension with depression in the community
Michal, M., Wiltink, J., Lackner, K. J., Wild, P. S., Zwiener, I., Blettner, M., Münzel, T. F., Schulz, A., Kirschner, Y., & Beutel, M. E. (2013) · Journal of Hypertension · doi:10.1097/hjh.0b013e32835f5768 · Cited by 66 · see citing works
Miller, S. B., & Ditto, B. (1991) · Psychophysiology · doi:10.1111/j.1469-8986.1991.tb03395.x · Cited by 66 · see citing works
Bruce, D. G., Chisholm, D. J., Storlien, L. H., Kraegen, E. W., & Smythe, G. A. (1992) · Diabetologia · doi:10.1007/bf00399929 · Cited by 64 · see citing works
The Renin Anggiotensin System and the Stress Response
Aguilera, G., Kiss, A., LUO, X., & Akbaşak, B. S. (1995) · Annals of the New York Academy of Sciences · doi:10.1111/j.1749-6632.1995.tb44679.x · Cited by 64 · see citing works
Davern, P. J., & Head, G. A. (2007) · Hypertension · doi:10.1161/hypertensionaha.106.086322 · Cited by 62 · see citing works
Is neurogenic hypertension related to vascular inflammation of the brainstem?
Paton, J. F. R., & Waki, H. (2008) · Neuroscience & Biobehavioral Reviews · doi:10.1016/j.neubiorev.2008.05.020 · Cited by 61 · see citing works
Role of central ANG II receptors in stress-induced cardiovascular and hyperthermic responses in rats
Saiki, Y., Watanabe, T., Tan, N., et al. (1997) · American Journal of Physiology-Regulatory, Integrative and Comparative Physiology · doi:10.1152/ajpregu.1997.272.1.r26 · Cited by 58 · see citing works
Depression is linked to uncontrolled hypertension: a case–control study from Karachi, Pakistan
Almas, A., Patel, J., Ghori, U., Ali, A. F., Edhi, A. I., & Khan, M. A. (2014) · Journal of Mental Health · doi:10.3109/09638237.2014.924047 · Cited by 57 · see citing works
Radi, S., Lang, T., Lauwers‐Cancès, V., Diène, E., Châtellier, G., Larabi, L., & Gaudemaris, R. D. (2005) · Occupational and Environmental Medicine · doi:10.1136/oem.2004.012955 · Cited by 53 · see citing works
Women, occupation, and risk of cardiovascular morbidity and mortality.
Hall, E. M., Johnson, J. V., & Tsou, T. S. (1994) · PubMed · Cited by 53 · see citing works
Central nervous system and mechanisms of hypertension.
Brody, M. J. (1988) · PubMed · Cited by 52 · see citing works
Relation between blood pressure and stroke mortality.
Palmer, A. J., Bulpitt, C. J., Fletcher, A. E., Beevers, D. G., Coles, E. C., Ledingham, J. G. G., Riordan, P. W. O., Petrie, J. C., Rajagopalan, B., & Webster, J. (1992) · Hypertension · doi:10.1161/01.hyp.20.5.601 · Cited by 52 · see citing works
Association Between Chronic Stress and Blood Pressure
Hassoun, L., Herrmann‐Lingen, C., Hapke, U., Neuhauser, H. K., Scheidt‐Nave, C., & Meyer, T. (2015) · Psychosomatic Medicine · doi:10.1097/psy.0000000000000183 · Cited by 49 · see citing works
Kayano, H., Koba, S., Matsui, T., Fukuoka, H., Toshida, T., Sakai, T., Akutsu, Y., Tanno, K., Geshi, E., & Kobayashi, Y. (2012) · Circulation Journal · doi:10.1253/circj.cj-11-1085 · Cited by 44 · see citing works
Job Strain–Associated Inflammatory Burden and Long-Term Risk of Coronary Events
Emeny, R. T., Zierer, A., Lacruz, M. E., Baumert, J. J., Herder, C., Gornitzka, G., Köenig, W., Thorand, B., & Ladwig, K. (2013) · Psychosomatic Medicine · doi:10.1097/psy.0b013e3182860d63 · Cited by 43 · see citing works
Agyei, B., Nicolaou, M., Boateng, L., Dijkshoorn, H., van den Born, B. H., & Agyemang, C. O. (2014) · BMC Public Health · doi:10.1186/1471-2458-14-692 · Cited by 38 · see citing works
Psychological Distress and the Development of Hypertension Over 5 Years in Black South Africans
Schutte, A. E., Ware, L. J., Huisman, H. W., Fourie, C. M. T., Greeff, M., Khumalo, T., & Wissing, M. P. (2014) · Journal of Clinical Hypertension · doi:10.1111/jch.12455 · Cited by 23 · see citing works
Dorn, T., Yzermans, J. C., Guijt, H., & van der Zee, J. (2006) · American Journal of Epidemiology · doi:10.1093/aje/kwk029 · Cited by 23 · see citing works
Pérez, L. H., Gutierrez, L. A., Vioqué, J., & Torres, Y. (2001) · European Journal of Epidemiology · doi:10.1023/a:1017975925554 · Cited by 19 · see citing works
Hu, W., Jin, X., Gu, J. F., Zhang, P., Yu, Q., Yin, G., Lu, Y., Xiao, H., Chen, Y., & Zhang, D. (2015) · Journal of the American Society of Hypertension · doi:10.1016/j.jash.2015.01.015 · Cited by 3 · see citing works
Analysis on related risk factors of youth hypertension
Chen, Y., & Chen, B. (2013) · Guoji yiyao weisheng daobao · doi:10.3760/cma.j.issn.1007-1245.2013.24.029 · Cited by 1 · see citing works
Flagged first, then by citations
Cited by
Sorted by citations
Mancia, G., Kreutz, R., Brunström, M., Burnier, M., Grassi, G., Januszewicz, A., Muiesan, M. L., Tsioufis, K., Agabiti-Rosei, E., Algharably, E. A. E., et al. (2023) · Journal of Hypertension · doi:10.1097/hjh.0000000000003480 · Cited by 3,473 · see citing works
Braveman, P., Dominguez, T. P., Burke, W., Dolan, S. M., Stevenson, D. K., Jackson, F. M., Collins, J. W., Driscoll, D. A., Haley, T., Acker, J., et al. (2021) · Frontiers in Reproductive Health · doi:10.3389/frph.2021.684207 · Cited by 189 · see citing works
Psychological and biological resilience modulates the effects of stress on epigenetic aging
Harvanek, Z. M., Fogelman, N., Xu, K., & Sinha, R. (2021) · Translational Psychiatry · doi:10.1038/s41398-021-01735-7 · Cited by 123 · see citing works
Costa, C., Briguglio, G., Mondello, S., Teodoro, M., Pollicino, M., Canalella, A., Verduci, F., Italia, S., & Fenga, C. (2021) · Frontiers in Public Health · doi:10.3389/fpubh.2021.640454 · Cited by 108 · see citing works
Methods and challenges for assessing heterogeneity
Feczko, E., & Fair, D. A. (2020) · Biological Psychiatry · doi:10.1016/j.biopsych.2020.02.015 · Cited by 96 · see citing works
Zhang, N., Zhang, Y., Li, M., Wang, W., Liu, Z., Xi, C., Huang, X., Liu, J., Huang, J., Tian, D., et al. (2020) · Brain and Behavior · doi:10.1002/brb3.1699 · Cited by 67 · see citing works
- Authors
- Liu, M.-Y., Li, N., Li, W. A., & Khan, H.
- Affiliations
- Department of Cardiology, Anzhen Hospital, Capital Medical University, Beijing, China
- Capital Medical University (CN)
- Wayne State University (US)
- ORCID
- Venue
- Neurological Research
- Publisher
- Informa UK Limited
- Published
- 2017-04-17
- Volume
- 39
- Issue
- 6
- Pages
- 573-580
- ISSN
- 0161-6412 (ISSN-L)
- 1743-1328
- OpenAlex
- W2606150955
- Cited by
- 546
- References
- 75
- Citations by year
- 2026: 57 · 2025: 78 · 2024: 69 · 2023: 107 · 2022: 72 · 2021: 81 · 2020: 46 · 2019: 21 · 2018: 10 · 2017: 5
- FWCI
- 3.16
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Neurological Research (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Blood Pressure and Hypertension Studies
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Health and Mental Health
- Health Sciences › Nursing › Nutrition and Dietetics › Sodium Intake and Health
- Keywords
- psychosocial stress, chronic stress, hypertension, blood pressure, hypertension risk factors, anxiety, depression, occupational stress, socioeconomic stress
- MeSH terms
- Anxiety, Chronic Disease, Depression, Humans, Hypertension, Risk Factors, Stress, Psychological
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