Cited by 194Optimism, Hope, and Well-beingCardiac Health and Mental HealthHealth and Wellbeing Research

Is Optimism Associated With Healthier Cardiovascular-Related Behavior?: Meta-Analyses of 3 Health Behaviors

Boehm, Julia K., Chen, Ying, Koga, Hayami, Mathur, Maya B., Vie, Loryana L., Kubzansky, Laura D.·2018·Circulation Research

Abstract

Optimistic people have reduced risk for cardiovascular disease and cardiovascular-related mortality compared with their less optimistic peers. One explanation for this is that optimistic people may be more likely to engage in healthy behavior like exercising frequently, eating fruits and vegetables, and avoiding cigarette smoking. However, researchers have not formally determined the extent or direction of optimism’s association with health behaviors. Moreover, it is unclear whether optimism temporally precedes health behaviors or whether the relationship is because of shared common causes. We conducted random effects meta-analyses examining optimism’s association with 3 health behaviors relevant for the prevention of cardiovascular disease. PubMed and PsycINFO databases were searched for studies published through November 2017 reporting on optimism’s relationship with physical activity, diet, and cigarette smoking. We identified 34 effect sizes for physical activity (n=90 845), 15 effect sizes for diet (n=47 931), and 15 effect sizes for cigarette smoking (n=15 052). Findings suggested that more optimistic individuals tended to engage in healthier behaviors compared with less optimistic individuals, but effect sizes were modest ( r activity =0.07, P <0.0001; r diet =0.12, P <0.0001; and r smoking =0.07, P =0.001). Most evidence was cross-sectional (≥53% of effect sizes) and did not consider sociodemographic characteristics (<53% of effect sizes) or psychological distress (<27% of effect sizes) as potential confounders. Optimism is associated with healthier behaviors that protect against cardiovascular disease, although most evidence was relatively low quality. Additional longitudinal and experimental research is required to determine whether optimism causally contributes to healthy behaviors and whether optimism could be an effective target for preventing cardiovascular disease.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1161/circresaha.117.310828

Cites

22 of 22 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

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?

  • Optimism is associated with healthier behaviors such as more physical activity, not smoking, healthy diet score, better sleep quality, and higher composite cardiovascular health scores.

    “Multiple studies have found that optimism is associated with healthier behaviors such as more physical activity, not smoking, 55 healthy diet score, 56 better sleep quality, 57 and higher composite cardiovascular health scores. 57-59”

    From Psychological Health, Well-Being, and the Mind-Heart-Body Connection: A Scientific Statement From the American Heart Association (2021) · cites this paper as [55]

    The citation range attached to this source supports the sentence’s claim about higher composite cardiovascular health scores. The Discussion reports associations with physical activity, healthier eating, and less smoking, but our copy does not report an association with a composite cardiovascular health score (searched: composite cardiovascular health scores, overall cardiovascular health composite index). (LLM, conf=0.72)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 77

  1. Carver CS, Scheier MF, Segerstrom SC. Optimism. Clin Psychol Rev. 2010;30:879-889. doi: 10.1016/j.cpr.2010.01.006. · DOI · Paper page
  2. Rasmussen HN, Scheier MF, Greenhouse JB. Optimism and physical health: a meta-analytic review. Ann Behav Med. 2009;37:239-256. doi: 10.1007/s12160-009-9111-x. · DOI
  3. Kim ES, Hagan KA, Grodstein F, DeMeo DL, De Vivo I, Kubzansky LD. Optimism and cause-specific mortality: a prospective cohort study. Am J Epidemiol. 2017;185:21-29. doi: 10.1093/aje/kww182. · DOI · Paper page
  4. Kim ES, Smith J, Kubzansky LD. Prospective study of the asso- ciation between dispositional optimism and incident heart failure. Circ Heart Fail. 2014;7:394-400. doi: 10.1161/CIRCHEARTFAILURE. 113.000644. · DOI · Paper page
  5. Kim ES, Park N, Peterson C. Dispositional optimism protects older adults from stroke: the Health and Retirement Study. Stroke. 2011;42:2855- 2859. doi: 10.1161/STROKEAHA.111.613448. · DOI · Paper page
  6. Giltay EJ, Geleijnse JM, Zitman FG, Hoekstra T, Schouten EG. Dispositional optimism and all-cause and cardiovascular mortality in a prospective cohort of elderly dutch men and women. Arch Gen Psychiatry. 2004;61:1126-1135. doi: 10.1001/archpsyc.61.11.1126. · DOI
  7. Giltay EJ, Kamphuis MH, Kalmijn S, Zitman FG, Kromhout D. Dispositional optimism and the risk of cardiovascular death: the Zutphen Elderly Study. Arch Intern Med. 2006;166:431-436. doi: 10.1001/archinte. 166.4.431. · DOI
  8. Boehm JK, Peterson C, Kivimaki M, Kubzansky L. A prospective study of positive psychological well-being and coronary heart disease. Health Psychol. 2011;30:259-267. doi: 10.1037/a0023124. · DOI
  9. Tindle HA, Chang YF, Kuller LH, Manson JE, Robinson JG, Rosal MC, Siegle GJ, Matthews KA. Optimism, cynical hostility, and incident coronary heart disease and mortality in the Women's Health Initiative. Circulation. 2009;120:656-662. doi: 10.1161/CIRCULATIONAHA.108.827642. · DOI · Paper page
  10. Giltay EJ, Geleijnse JM, Zitman FG, Buijsse B, Kromhout D. Lifestyle and dietary correlates of dispositional optimism in men: The Zutphen Elderly Study. J Psychosom Res. 2007;63:483-490. doi: 10.1016/j.jpsychores. 2007.07.014. · DOI · Paper page
  11. Bouchard LC, Carver CS, Mens MG, Scheier MF. Optimism, health, and well-being. In: Dunn DS, ed. Positive Psychology: Established and Emerging Issues. New York, NY: Routledge; 2018:112-130.
  12. Rasmussen HN, Wrosch C, Scheier MF, Carver CS. Self-regulation pro- cesses and health: the importance of optimism and goal adjustment. J Pers. 2006;74:1721-1747. doi: 10.1111/j.1467-6494.2006.00426.x. · DOI · Paper page
  13. Weinstein ND. Optimistic biases about personal risks. Science. 1989;246:1232-1233.
  14. Watson KB, Carlson SA, Gunn JP, Galuska DA, O'Connor A, Greenlund KJ, Fulton JE. Physical inactivity among adults aged 50 years and older -United States, 2014. MMWR Morb Mortal Wkly Rep. 2016;65:954-958. doi: 10.15585/mmwr.mm6536a3. · DOI
  15. Moore LV, Thompson FE. Adults meeting fruit and vegetable intake rec- ommendations -United States, 2013. MMWR Morb Mortal Wkly Rep. 2015;64:709-713.
  16. Boehm JK, Vie LL, Kubzansky LD. The promise of well-being interven- tions for improving health risk behaviors. Curr Cardiovasc Risk Rep. 2012;6:511-519.
  17. Ford ES, Bergmann MM, Kröger J, Schienkiewitz A, Weikert C, Boeing H. Healthy living is the best revenge: findings from the European Prospective Investigation Into Cancer and Nutrition-Potsdam study. Arch Intern Med. 2009;169:1355-1362. doi: 10.1001/archinternmed.2009.237. · DOI
  18. McCullough ML, Patel AV, Kushi LH, Patel R, Willett WC, Doyle C, Thun MJ, Gapstur SM. Following cancer prevention guidelines re- duces risk of cancer, cardiovascular disease, and all-cause mortal- ity. Cancer Epidemiol Biomarkers Prev. 2011;20:1089-1097. doi: 10.1158/1055-9965.EPI-10-1173. · DOI
  19. Nocon M, Hiemann T, Müller-Riemenschneider F, Thalau F, Roll S, Willich SN. Association of physical activity with all-cause and cardiovas- cular mortality: a systematic review and meta-analysis. Eur J Cardiovasc Prev Rehabil. 2008;15:239-246. doi: 10.1097/HJR.0b013e3282f55e09. · DOI · Paper page
  20. Smith SC, Jr, Benjamin EJ, Bonow RO, et al. AHA/ACCF secondary prevention and risk reduction therapy for patients with coronary and other atherosclerotic vascular disease: 2011 update: a guideline from the American Heart Association and American College of Cardiology Foundation. Circulation. 2011;124:2458-2473.
  21. Labarthe DR, Kubzansky LD, Boehm JK, Lloyd-Jones DM, Berry JD, Seligman ME. Positive cardiovascular health: a timely convergence. J Am Coll Cardiol. 2016;68:860-867. doi: 10.1016/j.jacc.2016.03.608. · DOI
  22. Pampel FC, Krueger PM, Denney JT. Socioeconomic disparities in health behaviors. Annu Rev Sociol. 2010;36:349-370. doi: 10.1146/annurev.soc. 012809.102529. · DOI
  23. Havranek EP, Mujahid MS, Barr DA, Blair IV, Cohen MS, Cruz-Flores S, Davey-Smith G, Dennison-Himmelfarb CR, Lauer MS, Lockwood DW, Rosal M, Yancy CW; American Heart Association Council on Quality of Care and Outcomes Research, Council on Epidemiology and Prevention, Council on Cardiovascular and Stroke Nursing, Council on Lifestyle and Cardiometabolic Health, and Stroke Council. Social determinants of risk and outcomes for cardiovascular disease: a scientific statement from the American Heart Association. Circulation. 2015;132:873-898. doi: 10.1161/CIR.0000000000000228. · DOI · Paper page
  24. Gallagher MW, Lopez SJ. Positive expectancies and mental health: iden- tifying the unique contributions of hope and optimism. J Posit Psychol. 2009;4:548-556.
  25. Bryant FB, Cvengros JA. Distinguishing hope and optimism: two sides of a coin, or two separate coins?. J Soc Clin Psychol. 2004;23:273-302.
  26. Radcliffe NM, Klein WMP. Dispositional, unrealistic and comparative optimism: differential relations with the knowledge and processing of risk information and beliefs about personal risk. Pers Soc Psychol Bull. 2002;28:836-846.
  27. Palomo T, Beninger RJ, Kostrzewa RM, Archer T. Affective status in re- lation to impulsive, motor and motivational symptoms: personality, de- velopment and physical exercise. Neurotox Res. 2008;14:151-168. doi: 10.1007/BF03033807. · DOI · Paper page
  28. Tinker LF, Rosal MC, Young AF, Perri MG, Patterson RE, Van Horn L, Assaf AR, Bowen DJ, Ockene J, Hays J, Wu L. Predictors of di- etary change and maintenance in the Women's Health Initiative Dietary Modification Trial. J Am Diet Assoc. 2007;107:1155-1166. doi: 10.1016/j.jada.2007.04.010. · DOI · Paper page
  29. Hingle MD, Wertheim BC, Tindle HA, Tinker L, Seguin RA, Rosal MC, Thomson CA. Optimism and diet quality in the Women's Health Initiative. J Acad Nutr Diet. 2014;114:1036-1045. doi: 10.1016/j.jand.2013.12.018. · DOI · Paper page
  30. Stroup DF, Berlin JA, Morton SC, Olkin I, Williamson GD, Rennie D, Moher D, Becker BJ, Sipe TA, Thacker SB. Meta-analysis of observa- tional studies in epidemiology: a proposal for reporting. Meta-Analysis of Observational Studies in Epidemiology (MOOSE) group. JAMA. 2000;283:2008-2012.
  31. Wardle J, Chida Y, Gibson EL, Whitaker KL, Steptoe A. Stress and adi- posity: a meta-analysis of longitudinal studies. Obesity (Silver Spring). 2011;19:771-778. doi: 10.1038/oby.2010.241. · DOI
  32. Wong SL, Shields M, Leatherdale S, Malaison E, Hammond D. Assessment of validity of self-reported smoking status. Health Rep. 2012;23:47-53.
  33. Moher D, Liberati A, Tetzlaff J, Altman DG; PRISMA Group. Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement. BMJ. 2009;339:b2535. doi: 10.1136/bmj.b2535. · DOI · Paper page
  34. Borenstein M, Hedges LV, Higgins JPT, Rothstein HR. Introduction to Meta-Analysis. Chichester, United Kingdom: John Wiley & Sons; 2009.
  35. Duval S, Tweedie R. Trim and Fill: a simple funnel-plot-based method of testing and adjusting for publication bias in meta-analysis. Biometrics. 2000;56:455-463.
  36. Scheier MF, Matthews KA, Owens JF, Magovern GJ Sr, Lefebvre RC, Abbott RA, Carver CS. Dispositional optimism and recovery from coro- nary artery bypass surgery: the beneficial effects on physical and psycho- logical well-being. J Pers Soc Psychol. 1989;57:1024-1040.
  37. Hamid PN. Optimism and the reporting of flu episodes. Soc Behav Pers. 1990;18:225-234.
  38. Rabinowitz S, Melamed S, Weisberg E, Tal D, Ribak J. Personal determi- nants of leisure-time exercise activities. Percept Mot Skills. 1992;75:779- 784. doi: 10.2466/pms.1992.75.3.779. · DOI
  39. Fontaine KR, Shaw DF. Effects of self-efficacy and dispositional opti- mism on adherence to step aerobic exercise classes. Percept Mot Skills. 1995;81:251-255. doi: 10.2466/pms.1995.81.1.251. · DOI
  40. Jex SM, Spector PE, Gudanowski DM, Newman RA. Relations be- tween exercise and employee responses to work stressors: a summary of two studies. In: Crandall R, Perrewé PL, Crandall R, Perrewé PL, eds. Occupational Stress: A Handbook. Philadelphia, PA: Taylor & Francis; 1995:283-301.
  41. Kavussanu M, McAuley E. Exercise and optimism: are highly active indi- viduals more optimistic? J Sport Exerc Psychol. 1995;17:246-258.
  42. Davidson K, Prkachin K. Optimism and unrealistic optimism have an in- teracting impact on health-promoting behavior and knowledge changes. Pers Soc Psychol Bull. 1997;23:617-625.
  43. Greenberg M. High-rise public housing, optimism, and personal and envi- ronmental health behaviors. Am J Health Behav. 1997;21:388-398.
  44. Kimble LP. Cognitive appraisal and cardiac risk reduction behavior fol- lowing coronary angioplasty. West J Nurs Res. 1998;20:733-744. doi: 10.1177/019394599802000605. · DOI
  45. Mulkana SS, Hailey BJ. The role of optimism in health-enhancing behav- ior. Am J Health Behav. 2001;25:388-395.
  46. Glazer KM, Emery CF, Frid DJ, Banyasz RE. Psychological predictors of adherence and outcomes among patients in cardiac rehabilitation. J Cardiopulm Rehabil. 2002;22:40-46.
  47. Holahan CK, Suzuki R. Motivational factors in health promoting behavior in later aging. Act Adapt Aging. 2005;30:47-60.
  48. Schroder KE, Schwarzer R. Habitual self-control and the management of health behavior among heart patients. Soc Sci Med. 2005;60:859-875. doi: 10.1016/j.socscimed.2004.06.028. · DOI
  49. Venne SA, Laguna P, Walk S, Ravizza K. Optimism levels among collegiate athletes and non-athletes. Int J Sport Exerc Psychol. 2006;4:182-195.
  50. Baker SR. Dispositional optimism and health status, symptoms and be- haviours: assessing idiothetic relationships using a prospective daily diary approach. Psychol Health. 2007;22:431-455.
  51. Ruthig JC, Chipperfield JG, Newall NE, Perry RP, Hall NC. Detrimental effects of falling on health and well-being in later life: the mediating roles of perceived control and optimism. J Health Psychol. 2007;12:231-248. doi: 10.1177/1359105307074250. · DOI
  52. Bailis DS, Chipperfield JG, Perry RP, Newall NE, Haynes TL. Exploring the commonalities between adaptive resources and self-enhancement in older adults' comparative judgments of physical activity. J Aging Health. 2008;20:899-919. doi: 10.1177/0898264308324636. · DOI
  53. Geers AL, Wellman JA, Lassiter GD. Dispositional optimism and engage- ment: the moderating influence of goal prioritization. J Pers Soc Psychol. 2009;96:913-932. doi: 10.1037/a0014830. · DOI
  54. Rius-Ottenheim N, Geleijnse JM, Kromhout D, van der Mast RC, Zitman FG, Giltay EJ. Physical activity after myocardial infarction: is it related to mental health? Eur J Prev Cardiol. 2013;20:399-408. doi: 10.1177/2047487312438184. · DOI
  55. Pavey TG, Burton NW, Brown WJ. Prospective relationships between physical activity and optimism in young and mid-aged women. J Phys Act Health. 2015;12:915-923. doi: 10.1123/jpah.2014-0070. · DOI
  56. Ramsay JE, Yang F, Pang JS, Lai CM, Ho RC, Mak KK. Divergent pathways to influence: cognition and behavior differentially medi- ate the effects of optimism on physical and mental quality of life in Chinese university students. J Health Psychol. 2015;20:963-973. doi: 10.1177/1359105313504441. · DOI
  57. Ronaldson A, Molloy GJ, Wikman A, Poole L, Kaski JC, Steptoe A. Optimism and recovery after acute coronary syndrome: a clinical cohort study. Psychosom Med. 2015;77:311-318. doi: 10.1097/PSY.0000000000000155. · DOI
  58. Serlachius A, Pulkki-Råback L, Elovainio M, Hintsanen M, Mikkilä V, Laitinen TT, Jokela M, Rosenström T, Josefsson K, Juonala M, Lehtimäki T, Raitakari O, Keltikangas-Järvinen L. Is dispositional op- timism or dispositional pessimism predictive of ideal cardiovascular health? The Young Finns Study. Psychol Health. 2015;30:1221-1239. doi: 10.1080/08870446.2015.1041394. · DOI
  59. Kim J, Chun S, Heo J, Lee S, Han A. Contribution of leisure-time physical activity on psychological benefits among elderly immigrants. Appl Res Qual Life. 2016;11:461-470.
  60. Smagula SF, Faulkner K, Scheier MF, Tindle HA, Cauley JA; Osteoporotic Fractures in Men (MrOS) Study Group. Testing the inde- pendence of multiple personality factors in relation to health among community-dwelling older men. J Aging Health. 2016;28:571-586. doi: 10.1177/0898264315597649. · DOI
  61. Progovac AM, Donohue JM, Matthews KA, Chang CH, Habermann EB, Kuller LH, Saquib J, LaMonte MJ, Salmoirago-Blotcher E, Zaslavsky O, Tindle HA. Optimism predicts sustained vigorous physical activ- ity in postmenopausal women. Prev Med Rep. 2017;8:286-293. doi: 10.1016/j.pmedr.2017.10.008. · DOI
  62. Meyer AM, Evenson KR, Morimoto L, Siscovick D, White E. Test-retest reli- ability of the Women's Health Initiative physical activity questionnaire. Med Sci Sports Exerc. 2009;41:530-538. doi: 10.1249/MSS.0b013e31818ace55. · DOI
  63. Shepperd JA, Maroto JJ, Pbert LA. Dispositional optimism as a predictor of health changes among cardiac patients. J Res Pers. 1996;30:517-534.
  64. Rius-Ottenheim N, Kromhout D, Sijtsma FPC, Geleijnse JM, Giltay EJ. Dietary patterns and mental health after myocardial infarction. PLoS One. 2017;12:e0186368. doi: 10.1371/journal.pone.0186368. · DOI
  65. Kendler KS, Neale MC, Sullivan P, Corey LA, Gardner CO, Prescott CA. A population-based twin study in women of smoking initiation and nico- tine dependence. Psychol Med. 1999;29:299-308.
  66. Kubzansky LD, Kubzansky PE, Maselko J. Optimism and pessimism in the context of health: bipolar opposites or separate constructs? Pers Soc Psychol Bull. 2004;30:943-956. doi: 10.1177/0146167203262086. · DOI · Paper page
  67. Khallad Y. Dispositional optimism among American and Jordanian col- lege students: are Westerners really more upbeat than Easterners? Int J Psychol. 2010;45:56-63. doi: 10.1080/00207590902767020. · DOI
  68. Liu L, Xu X, Wu H, Yang Y, Wang L. Associations of psychological capi- tal, demographic and occupational factors with cigarette smoking among Chinese underground coal miners. BMC Public Health. 2015;15:20. doi: 10.1186/s12889-015-1349-6. · DOI
  69. Cohen J. A power primer. Psychol Bull. 1992;112:155-159.
  70. King DE, Mainous AG III, Geesey ME. Turning back the clock: adopt- ing a healthy lifestyle in middle age. Am J Med. 2007;120:598-603. doi: 10.1016/j.amjmed.2006.09.020. · DOI
  71. Fjeldsoe B, Neuhaus M, Winkler E, Eakin E. Systematic review of main- tenance of behavior change following physical activity and dietary inter- ventions. Health Psychol. 2011;30:99-109. doi: 10.1037/a0021974. · DOI · Paper page
  72. Rozanski A. Optimism and other sources of psychological well-being: a new target for cardiac disease prevention. Circ Heart Fail. 2014;7:385- 387. doi: 10.1161/CIRCHEARTFAILURE.114.001303. · DOI
  73. Malouff JM, Schutte NS. Can psychological interventions increase opti- mism? A meta-analysis. J Posit Psychol. 2017;12:594-604.
  74. Abelson RP. A variance explanation paradox: when a little is a lot. Psychol. Bull. 1985;97:129-133.
  75. Friedman HS, Booth-Kewley S. The "disease-prone personality". A me- ta-analytic view of the construct. Am Psychol. 1987;42:539-555.
  76. Kim ES, Kubzansky LD, Soo J, Boehm JK. Maintaining healthy be- havior: a prospective study of psychological well-being and physical activity. Ann Behav Med. 2017;51:337-347. doi: 10.1007/s12160- 016-9856-y. · DOI
  77. Hamilton MT, Hamilton DG, Zderic TW. Role of low energy expen- diture and sitting in obesity, metabolic syndrome, type 2 diabetes, and cardiovascular disease. Diabetes. 2007;56:2655-2667. doi: 10.2337/ db07-0882. · DOI · Paper page

Cited by

Sorted by citations

Authors
Boehm, J. K., Chen, Y., Koga, H., Mathur, M. B., Vie, L. L., & Kubzansky, L. D.
Affiliations
Harvard University (US)
Venue
Circulation Research
Published
2018-04-13
Volume
122
Issue
8
Pages
1119-1134
ISSN
  • 0009-7330 (ISSN-L)
  • 1524-4571
OpenAlex
W2798251290
Cited by
194
References
22
Citations by year
2026: 9 · 2025: 29 · 2024: 43 · 2023: 23 · 2022: 30 · 2021: 21 · 2020: 23 · 2019: 15 · 2018: 1
FWCI
2.06
Type
journal article
Language
en
Open access
closed
Locations
  • Circulation Research (publishedVersion)
  • PubMed (publishedVersion)
  • Chapman University Digital Commons (Chapman University) (submittedVersion)
Funders
Robert Wood Johnson Foundation
Topics
  • Social Sciences › Psychology › Applied Psychology › Optimism, Hope, and Well-being
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Health and Mental Health
  • Health Sciences › Health Professions › General Health Professions › Health and Wellbeing Research
Keywords
optimism, cardiovascular disease prevention, physical activity, diet, fruit and vegetable intake, cigarette smoking, cardiovascular health behaviors, causal inference, psychological distress, sociodemographic confounding
MeSH terms
Optimism, Adult, Attitude to Health, Cardiovascular Diseases, Cross-Sectional Studies, Diet, Feeding Behavior, Female, Humans, Longitudinal Studies, Male, Smoking, Health Behavior, Exercise, Causality

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