Effect of childhood trauma on adult depression and neuroendocrine function: sex-specific moderation by CRH receptor 1 gene
Open accessAbstract
Variations of the corticotropin-releasing hormone receptor 1 (CRHR1) gene appear to moderate the development of depression after childhood trauma. Depression more frequently affects women than men. We examined sex differences in the effects of the CRHR1 gene on the relationship between childhood trauma and adult depression. We recruited 1,063 subjects from the waiting rooms of a public urban hospital. Childhood trauma exposure and symptoms of depression were assessed using dimensional rating scales. Subjects were genotyped for rs110402 within the CRHR1 gene. An independent sample of 78 subjects underwent clinical assessment, genotyping, and a dexamethasone/CRH test. The age range at recruitment was 18-77 years and 18-45, for the two studies respectively. In the hospital sample, the protective effect of the rs110402 A-allele against developing depression after childhood trauma was observed in men (N = 424), but not in women (N = 635). In the second sample, the rs110402 A-allele was associated with decreased cortisol response in the dexamethasone/CRH test only in men. In A-allele carriers with childhood trauma exposure women exhibited increased cortisol response compared men; there were no sex differences in A-allele carriers without trauma exposure. This effect may, however, not be related to gender differences per se, but to differences in the type of experienced abuse between men and women. CRHR x environment interactions in the hospital sample were observed with exposure to physical, but not sexual or emotional abuse. Physical abuse was the most common type of abuse in men in this cohort, while sexual abuse was most commonly suffered by women. Our results suggest that the CRHR1 gene may only moderate the effects of specific types of childhood trauma on depression. Gender differences in environmental exposures could thus be reflected in sex-specific CRHR1 x child abuse interactions.
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.
Integrity signals
Registry
Cites
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.
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?
Specific CRHR1 polymorphisms interact with ELS/CT to increase the risk of adult depression.
“Bradley et al. reported in two separate cohorts, independently, that specific CRHR1 polymorphisms interact with ELS/CT to increase the risk of adult depression (390), similar to Heim et al. (391), while Ben-Efraim et al. (392) reported comparable findings with respect to suicide attempts.”
From Developmental Trajectories of Early Life Stress and Trauma: A Narrative Review on Neurobiological Aspects Beyond Stress System Dysregulation (2019) · cites this paper as [391]
The Results (Study 1; page unavailable) report an interaction between CRHR1 rs110402 and childhood abuse on adult depressive symptoms, but it was significant in men, not women. The significant interaction by abuse type was limited to physical abuse, and the A allele was described as protective rather than as increasing risk. The claim omits these qualifications. (LLM, conf=0.85)
Experimental — accuracy not yet measuredIn psychiatry, depression is conceptualized as heterogeneous, multifactorial in causation, and believed to arise from cumulative effects of genetics, adverse events in childhood, and ongoing life stressors.
“Moreover, in psychiatry depression is conceptualized as heterogeneous, multifactorial in causation, and it is believed to arise from the cumulative effects [56–58] of genetics [59–62], adverse events in childhood [63–66], and ongoing life stressors [67–70].”
From The Need to Separate Chronic Traumatic Encephalopathy Neuropathology from Clinical Features (2017) · cites this paper as [65]
In an independent sample, Heim et al. found an interaction of early life stress, particularly physical abuse, and CRHR1 rs110402 in predicting depression in men only.
“Using an independent sample, these authors also examined the interaction between CRHR1 rs110402 and ELS in predicting depression, again finding an interaction of ELS (particularly physical abuse) and CRHR1 in men only.”
From Gene–environment interactions: early life stress and risk for depressive and anxiety disorders (2011) · cites this paper as Heim et al. (2009)
Heim et al. found a gene-environment interaction such that men reporting early life stress with an A allele had decreased cortisol responses compared with women reporting early life stress, but responses of men and women without early life stress did not differ.
“In addition, there was a GxE interaction such that men reporting ELS with an A allele had decreased cortisol responses compared with women reporting ELS, but responses of men and women without ELS did not differ.”
From Gene–environment interactions: early life stress and risk for depressive and anxiety disorders (2011) · cites this paper as Heim et al. (2009)
Heim et al. (2009) partially replicated Tyrka et al.'s findings in a Dex/CRH study, finding that men but not women who were carriers of the A allele had decreased cortisol responses compared with men with the G/G genotype.
“Men, but not women, who were carriers of the A allele had decreased cortisol responses compared with men with the G/G genotype.”
From Gene–environment interactions: early life stress and risk for depressive and anxiety disorders (2011) · cites this paper as Heim et al. (2009)
Evidence from studies reviewed here supports the existence of differences in the impact of type of early life stress, and these effects may be gender-specific.
“Evidence from studies reviewed here supports the existence of differences in the impact of type of ELS, and these effects may be gender-specific (Cicchetti et al. 2007; Heim et al. 2009; Sjoberg et al. 2006).”
From Gene–environment interactions: early life stress and risk for depressive and anxiety disorders (2011) · cites this paper as Heim et al. 2009
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
An inventory for measuring depression
BECK, A. T. (1961) · Archives of General Psychiatry · doi:10.1001/archpsyc.1961.01710120031004 · Cited by 38,032 · see citing works
Influence of life stress on depression: moderation by a polymorphism in the 5-HTT gene
Caspi, A., Sugden, K., Moffitt, T. E., Taylor, A., Craig, I. W., Harrington, H., McClay, J., Mill, J., Martin, J., Braithwaite, A., et al. (2003) · Science · doi:10.1126/science.1083968 · Cited by 8,120 · see citing works
Development and validation of a brief screening version of the Childhood Trauma Questionnaire
Bernstein, D. P., Stein, J. A., Newcomb, M. D., Walker, E., Pogge, D., Ahluvalia, T., Stokes, J., Handelsman, L., Medrano, M., Desmond, D., et al. (2003) · Child Abuse & Neglect · doi:10.1016/s0145-2134(02)00541-0 · Cited by 6,419 · see citing works
Effects of stress throughout the lifespan on the brain, behaviour and cognition
Lupien, S. J., McEwen, B. S., Gunnar, M. R., & Heim, C. (2009) · Nature Reviews Neuroscience · doi:10.1038/nrn2639 · Cited by 6,256 · see citing works
Self-citationBurden and consequences of child maltreatment in high-income countries
Gilbert, R., Widom, C. S., Browne, K., Fergusson, D., Webb, E., & Janson, S. (2009) · The Lancet · doi:10.1016/s0140-6736(08)61706-7 · Cited by 3,876 · see citing works
Epigenetic regulation of the glucocorticoid receptor in human brain associates with childhood abuse
McGowan, P. O., Sasaki, A., D'Alessio, A. C., Dymov, S., Labonté, B., Szyf, M., Turecki, G., & Meaney, M. J. (2009) · Nature Neuroscience · doi:10.1038/nn.2270 · Cited by 3,531 · see citing works
Validity of adult retrospective reports of adverse childhood experiences: review of the evidence
Hardt, J., & Rutter, M. (2004) · Journal of Child Psychology and Psychiatry · doi:10.1111/j.1469-7610.2004.00218.x · Cited by 2,827 · see citing works
Dube, S. R., Anda, R. F., Felitti, V. J., Chapman, D. P., Williamson, D. F., & Giles, W. H. (2001) · JAMA · doi:10.1001/jama.286.24.3089 · Cited by 2,296 · see citing works
Adverse childhood experiences and the risk of depressive disorders in adulthood
Chapman, D. P., Whitfield, C. L., Felitti, V. J., Dube, S. R., Edwards, V. J., & Anda, R. F. (2004) · Journal of Affective Disorders · doi:10.1016/j.jad.2003.12.013 · Cited by 2,267 · see citing works
Kessler, R. (1993) · Journal of Affective Disorders · doi:10.1016/0165-0327(93)90026-g · Cited by 2,207 · see citing works
Epidemiology of women and depression
Kessler, R. (2003) · Journal of Affective Disorders · doi:10.1016/s0165-0327(02)00426-3 · Cited by 2,006 · see citing works
The link between childhood trauma and depression: insights from HPA axis studies in humans
Heim, C., Newport, D. J., Mletzko, T., Miller, A. H., & Nemeroff, C. B. (2008) · Psychoneuroendocrinology · doi:10.1016/j.psyneuen.2008.03.008 · Cited by 1,704 · see citing works
Self-citationRisch, N., Herrell, R., Lehner, T., Liang, K.-Y., Eaves, L., Hoh, J., Griem, A., Kovacs, M., Ott, J., & Merikangas, K. R. (2009) · JAMA · doi:10.1001/jama.2009.878 · Cited by 1,655 · see citing works
Allelic discrimination using fluorogenic probes and the 5′ nuclease assay
Livak, K. J. (1999) · Genetic Analysis Biomolecular Engineering · doi:10.1016/s1050-3862(98)00019-9 · Cited by 1,383 · see citing works
Binder, E. B. (2008) · JAMA · doi:10.1001/jama.299.11.1291 · Cited by 1,362 · see citing works
Sex-Specific Programming of Offspring Emotionality after Stress Early in Pregnancy
Mueller, B. R., & Bale, T. L. (2008) · The Journal of Neuroscience · doi:10.1523/jneurosci.1424-08.2008 · Cited by 988 · see citing works
Meaney, M. J., & Szyf, M. (2005) · Dialogues in Clinical Neuroscience · doi:10.31887/dcns.2005.7.2/mmeaney · Cited by 958 · see citing works
Clinical Characteristics of Women With a History of Childhood Abuse: Unhealed Wounds
McCauley, J. (1997) · JAMA · doi:10.1001/jama.1997.03540410040028 · Cited by 904 · see citing works
Long-term behavioral and neuroendocrine adaptations to adverse early experience
Ladd, C. O., Huot, R. L., Thrivikraman, K. V., Nemeroff, C. B., Meaney, M. J., & Plotsky, P. M. (2000) · Progress in brain research · doi:10.1016/s0079-6123(08)62132-9 · Cited by 717 · see citing works
Bremner, J. D. (1999) · Biological Psychiatry · doi:10.1016/s0006-3223(99)00009-8 · Cited by 703 · see citing works
Bradley, R. G., Binder, E. B., Epstein, M. P., Tang, Y., Nair, H. P., Liu, W., Gillespie, C. F., Berg, T., Evces, M., Newport, D. J., et al. (2008) · Archives of General Psychiatry · doi:10.1001/archgenpsychiatry.2007.26 · Cited by 643 · see citing works
Self-citationWeiss, E. L., Longhurst, J. G., & Mazure, C. M. (1999) · American Journal of Psychiatry · doi:10.1176/ajp.156.6.816 · Cited by 517 · see citing works
Vamvakopoulos, N. C., & Chrousos, G. P. (1993) · Journal of Clinical Investigation · doi:10.1172/jci116782 · Cited by 422 · see citing works
(1993) · Behavior Therapy · Cited by 409 · see citing works
Holsboer, F., Lauer, C. J., Schreiber, W., & Krieg, J.-C. (2008) · Neuroendocrinology · doi:10.1159/000127023 · Cited by 369 · see citing works
Heim, C., Mletzko, T., Purselle, D., Musselman, D. L., & Nemeroff, C. B. (2008) · Biological Psychiatry · doi:10.1016/j.biopsych.2007.07.002 · Cited by 353 · see citing works
Self-citationEarly Sexual Abuse and Clinical Depression in Adult Life
Bifulco, A., Brown, G. W., & Adler, Z. (1991) · British Journal of Psychiatry · doi:10.1192/bjp.159.1.115 · Cited by 335 · see citing works
Polanczyk, G., Caspi, A., Williams, B., Price, T. S., Danese, A., Sugden, K., Uher, R., Poulton, R., & Moffitt, T. E. (2009) · Archives of General Psychiatry · doi:10.1001/archgenpsychiatry.2009.114 · Cited by 285 · see citing works
The combined dexamethasone/CRH test as a potential surrogate marker in depression
Ising, M., Kunzel, H. E., Binder, E. B., Nickel, T., Modell, S., & Holsboer, F. (2005) · Progress in Neuro-Psychopharmacology and Biological Psychiatry · doi:10.1016/j.pnpbp.2005.03.014 · Cited by 268 · see citing works
Tyrka, A. R., Price, L. H., Gelernter, J., Schepker, C., Anderson, G. M., & Carpenter, L. L. (2009) · Biological Psychiatry · doi:10.1016/j.biopsych.2009.05.012 · Cited by 264 · see citing works
Brown, G. W., & Harris, T. (2008) · Journal of Affective Disorders · doi:10.1016/j.jad.2008.04.009 · Cited by 199 · see citing works
Clinical characteristics of women with a history of childhood abuse: unhealed wounds
McCauley, J. (1997) · JAMA · doi:10.1001/jama.277.17.1362 · Cited by 199 · see citing works
Sánchez, M. M., Noble, P. M., Lyon, C. K., Plotsky, P. M., Davis, M., Nemeroff, C. B., & Winslow, J. T. (2005) · Biological Psychiatry · doi:10.1016/j.biopsych.2004.11.032 · Cited by 178 · see citing works
Sex differences in stress responses: focus on ovarian hormones
Ter Horst, G. J., Wichmann, R., Gerrits, M., Westenbroek, C., & Lin, Y. (2009) · Physiology & Behavior · doi:10.1016/j.physbeh.2009.02.036 · Cited by 157 · see citing works
Buckley, P. F. (2009) · Yearbook of Psychiatry and Applied Mental Health · doi:10.1016/s0084-3970(08)79187-4 · Cited by 69 · see citing works
Stockman, J. A. (2009) · Yearbook of Pediatrics · doi:10.1016/s0084-3954(08)79072-9 · Cited by 59 · see citing works
Weiser, M. J., Goel, N., Sandau, U. S., Bale, T. L., & Handa, R. J. (2008) · Experimental Neurology · doi:10.1016/j.expneurol.2008.07.013 · Cited by 35 · see citing works
Flagged first, then by citations
Cited by
Sorted by citations
Why is depression more common among women than among men?
Kuehner, C. (2017) · The Lancet Psychiatry · doi:10.1016/s2215-0366(16)30263-2 · Cited by 1,752 · see citing works
Allele-specific FKBP5 DNA demethylation mediates gene–childhood trauma interactions
Klengel, T., Mehta, D., Anacker, C., Rex-Haffner, M., Pruessner, J. C., Pariante, C. M., Pace, T. W. W., Mercer, K. B., Mayberg, H. S., Bradley, B., et al. (2013) · Nature Neuroscience · doi:10.1038/nn.3275 · Cited by 1,447 · see citing works
Self-citationHeim, C., & Binder, E. B. (2012) · Experimental Neurology · doi:10.1016/j.expneurol.2011.10.032 · Cited by 986 · see citing works
Self-citationThe Biological Effects of Childhood Trauma
De Bellis, M. D., & Zisk, A. (2014) · Child and Adolescent Psychiatric Clinics of North America · doi:10.1016/j.chc.2014.01.002 · Cited by 892 · see citing works
Paradise lost: the neurobiological and clinical consequences of child abuse and neglect
Nemeroff, C. B. (2016) · Neuron · doi:10.1016/j.neuron.2016.01.019 · Cited by 768 · see citing works
Sex differences and stress across the lifespan
Bale, T. L., & Epperson, C. N. (2015) · Nature Neuroscience · doi:10.1038/nn.4112 · Cited by 751 · see citing works
The role of early life stress as a predictor for alcohol and drug dependence
Enoch, M.-A. (2011) · Psychopharmacology · doi:10.1007/s00213-010-1916-6 · Cited by 668 · see citing works
Neurobiological and psychiatric consequences of child abuse and neglect
Heim, C., Shugart, M., Craighead, W. E., & Nemeroff, C. B. (2010) · Developmental Psychobiology · doi:10.1002/dev.20494 · Cited by 613 · see citing works
Self-citationFrodl, T., & O'Keane, V. (2013) · Neurobiology of Disease · doi:10.1016/j.nbd.2012.03.012 · Cited by 555 · see citing works
Lippard, E. T. C., & Nemeroff, C. B. (2020) · American Journal of Psychiatry · doi:10.1176/appi.ajp.2019.19010020 · Cited by 527 · see citing works
Critical period regulation across multiple timescales
Reh, R. K., Dias, B. G., Nelson, C. A., Kaufer, D., Werker, J. F., Kolb, B., Levine, J. D., & Hensch, T. K. (2020) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1820836117 · Cited by 492 · see citing works
Agorastos, A., Pervanidou, P., Chrousos, G. P., & Baker, D. G. (2019) · Frontiers in Psychiatry · doi:10.3389/fpsyt.2019.00118 · Cited by 385 · see citing works
Gene–environment interactions: early life stress and risk for depressive and anxiety disorders
Nugent, N. R., Tyrka, A. R., Carpenter, L. L., & Price, L. H. (2011) · Psychopharmacology · doi:10.1007/s00213-010-2151-x · Cited by 269 · see citing works
Buss, C., Entringer, S., Moog, N. K., Toepfer, P., Fair, D. A., Simhan, H. N., Heim, C. M., & Wadhwa, P. D. (2017) · Journal of the American Academy of Child & Adolescent Psychiatry · doi:10.1016/j.jaac.2017.03.001 · Cited by 250 · see citing works
Self-citationHoutepen, L. C., Vinkers, C. H., Carrillo-Roa, T., Hiemstra, M., van Lier, P. A., Meeus, W., Branje, S., Heim, C. M., Nemeroff, C. B., Mill, J., et al. (2016) · Nature Communications · doi:10.1038/ncomms10967 · Cited by 242 · see citing works
Self-citationRaineki, C., Cortés, M. R., Belnoue, L., & Sullivan, R. M. (2012) · The Journal of Neuroscience · doi:10.1523/jneurosci.5843-11.2012 · Cited by 217 · see citing works
Early-life stress mediated modulation of adult neurogenesis and behavior
Korosi, A., Naninck, E. F. G., Oomen, C. A., Schouten, M., Krugers, H., Fitzsimons, C., & Lucassen, P. J. (2012) · Behavioural Brain Research · doi:10.1016/j.bbr.2011.07.037 · Cited by 194 · see citing works
Heim, C. M., Entringer, S., & Buss, C. (2019) · Psychoneuroendocrinology · doi:10.1016/j.psyneuen.2018.12.011 · Cited by 158 · see citing works
Self-citationDunlop, B. W., Binder, E. B., Cubells, J. F., Goodman, M. M., Kelley, M. E., Kinkead, B., Kutner, M., Nemeroff, C. B., Newport, D. J., Owens, M. J., et al. (2012) · Trials · doi:10.1186/1745-6215-13-106 · Cited by 136 · see citing works
Corral-Frías, N. S., Nikolova, Y. S., Michalski, L. J., Baranger, D. A. A., Hariri, A. R., & Bogdan, R. (2015) · Psychological Medicine · doi:10.1017/s0033291715000525 · Cited by 132 · see citing works
Stress reactivity in maltreated and comparison male and female young adolescents
Trickett, P. K., Gordis, E., Peckins, M. K., & Susman, E. J. (2014) · Child Maltreatment · doi:10.1177/1077559513520466 · Cited by 98 · see citing works
Dunlop, B. W., Binder, E. B., Iosifescu, D., Mathew, S. J., Neylan, T. C., Pape, J. C., Carrillo-Roa, T., Green, C., Kinkead, B., Grigoriadis, D., et al. (2017) · Biological Psychiatry · doi:10.1016/j.biopsych.2017.06.024 · Cited by 96 · see citing works
Gene-environment interactions between CRHR1 variants and physical assault in suicide attempts
Ben-Efraim, Y. J., Wasserman, D., Wasserman, J., & Sokolowski, M. (2011) · Genes, Brain and Behavior · doi:10.1111/j.1601-183x.2011.00703.x · Cited by 83 · see citing works
Lu, S., Gao, W., Huang, M., Li, L., & Xu, Y. (2016) · Journal of Psychiatric Research · doi:10.1016/j.jpsychires.2016.03.009 · Cited by 75 · see citing works
Tiwari, A., & Gonzalez, A. (2018) · Clinical Psychology Review · doi:10.1016/j.cpr.2018.01.006 · Cited by 71 · see citing works
The Need to Separate Chronic Traumatic Encephalopathy Neuropathology from Clinical Features
Iverson, G. L., Keene, C. D., Perry, G., & Castellani, R. J. (2017) · Journal of Alzheimer's Disease · doi:10.3233/jad-170654 · Cited by 72 · see citing works
Grabe, H. J., Wittfeld, K., Van der Auwera, S., Janowitz, D., Hegenscheid, K., Habes, M., Homuth, G., Barnow, S., John, U., Nauck, M., et al. (2016) · Human Brain Mapping · doi:10.1002/hbm.23123 · Cited by 67 · see citing works
Suicide and chronic traumatic encephalopathy
Iverson, G. L. (2016) · The Journal of Neuropsychiatry and Clinical Neurosciences · doi:10.1176/appi.neuropsych.15070172 · Cited by 66 · see citing works
Sevelinges, Y., Mouly, A.-M., Raineki, C., Moriceau, S., Forest, C., & Sullivan, R. M. (2011) · Developmental Cognitive Neuroscience · doi:10.1016/j.dcn.2010.07.005 · Cited by 56 · see citing works
Woo, H. I., Lim, S.-W., Myung, W., Kim, D. K., & Lee, S.-Y. (2018) · Experimental & Molecular Medicine · doi:10.1038/s12276-018-0123-0 · Cited by 42 · see citing works
(2020) · International review of neurobiology · doi:10.1016/bs.irn.2020.03.012 · Cited by 34 · see citing works
Obesity in women who have experienced intimate partner violence
Alhalal, E. (2018) · Journal of Advanced Nursing · doi:10.1111/jan.13797 · Cited by 24 · see citing works
Li, L., Garvey, W. T., & Gower, B. A. (2017) · Frontiers in Endocrinology · doi:10.3389/fendo.2017.00151 · Cited by 21 · see citing works
- Authors
- Heim, C.
- Affiliations
- Emory University (US)
- Corresponding author
- Heim, Christine
- ORCID
- Heim, Christine
- Venue
- Frontiers in Behavioral Neuroscience
- Publisher
- Frontiers Media SA
- Published
- 2009
- Volume
- 3
- Pages
- 41-41
- ISSN
- 1662-5153 (ISSN-L)
- PMC
- PMC2821197
- OpenAlex
- W2015231166
- Cited by
- 245
- References
- 37
- Citations by year
- 2026: 4 · 2025: 6 · 2024: 8 · 2023: 3 · 2022: 8 · 2021: 6 · 2020: 14 · 2019: 19 · 2018: 24 · 2017: 19 · 2016: 31 · 2015: 20 · 2014: 17 · 2013: 9 · 2012: 22
- FWCI
- 7.23
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- cc-by
- Locations
- Frontiers in Behavioral Neuroscience (publishedVersion, cc-by)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- MPG.PuRe (Max Planck Society) (submittedVersion)
- Funders
- Abbott Laboratories
- American Foundation for Suicide Prevention
- Eli Lilly and Company
- Pfizer
- AstraZeneca
- GlaxoSmithKline
- American Psychiatric Institute for Research and Education
- CeNeRx
- National Alliance for Research on Schizophrenia and Depression
- ACADIA Pharmaceuticals
- H. Lundbeck A/S
- National Institutes of Health (UL1TR000454)
- National Heart, Lung, and Blood Institute
- National Institute of Mental Health
- National Institute on Drug Abuse
- National Center for Advancing Translational Sciences
- UCB Pharma
- Topics
- Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
- Social Sciences › Psychology › Clinical Psychology › Child Abuse and Trauma
- Social Sciences › Psychology › Clinical Psychology › Posttraumatic Stress Disorder Research
- Keywords
- childhood trauma, adult depression, CRH receptor 1, sex differences, gene-environment interaction, cortisol response, neuroendocrine function, physical abuse, sexual abuse, emotional abuse, genetic moderation
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