Self-Help Intervention Project. Women receiving breast cancer treatment
Abstract
PURPOSE: The purpose of this study was to determine the efficacy of self‐care/self‐help promotion and uncertainty management interventions offered by the Self‐Help Intervention Project (SHIP) for women receiving chemotherapy, radiation therapy, or hormone therapy for breast cancer. DESCRIPTION OF STUDY: One hundred ninety‐three women were randomly assigned either to one of three intervention groups (self‐ help course, uncertainty management, or self‐help course plus uncertainty management) or to a control group. Data were analyzed by a repeated measures multivariate analysis of variance procedure using a two‐level blocking factor (high and low resourcefulness) and four outcome variables (self‐care, self‐help, psychological adjustment, and confidence in cancer knowledge). Data were collected at baseline (T1), which was after initiation of adjuvant therapy, allowing for the emergence of treatment‐related side effects; 6 to 8 weeks after T1 (T2); and 3 months after T2 (T3). RESULTS: At baseline, women having high resourcefulness compared with women having low resourcefulness evidenced greater self‐care, self‐help, psychological adjustment, and confidence in cancer knowledge. Participation in SHIP interventions resulted in higher levels of self‐care, self‐help, psychological adjustment, and confidence in cancer knowledge by time effect in a significant number of women regardless of their baseline resourcefulness. Women participating in SHIP interventions who had low baseline resourcefulness demonstrated the greatest change over time in the outcome variables. Post hoc results indicated that the effect primarily was the result of changes in psychological adjustment, confidence in cancer knowledge, and self‐care. CLINICAL IMPLICATIONS: The findings of this study address both the treatment effect for supportive care interventions and the needs that have emerged from review of the last 20 years of supportive care research. Some SHIP interventions evidenced more strength than others; data indicated that large percentages of women with low resourcefulness who received no SHIP interventions experienced a decrement in self‐care, self‐help, confidence in cancer knowledge, and psychological adjustment over the time that they received adjuvant therapy. Women's level of confidence in their knowledge about cancer being sufficient for self‐management and self‐help activities was not linked to baseline resourcefulness level. Thus, inherent resourcefulness was not a factor in need for supportive services that could maintain or increase confidence in cancer knowledge usefulness for self‐management and self‐help. Healthcare providers should note that although the women with low resourcefulness benefited the most from the interventions, women who evidenced high resourcefulness at baseline reported the same level of need for confidence in cancer knowledge and for self‐help.
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?
The SHIP study found participants demonstrated increased levels of self-care, self-help, psychological adjustment, and confidence in cancer knowledge (p≤.003).
“Their study found that participants demonstrated increased levels of self-care, self-help, psychological adjustment, and confidence in cancer knowledge (p=≤.003).”
From Self-management: Enabling and empowering patients living with cancer as a chronic illness (2011) · cites this paper as [12]
Braden, Mishel & Longman tested a self-help intervention protocol (SHIP) with women with breast cancer undergoing adjuvant treatment to increase knowledge, improve problem-solving, redirect negative thinking, promote communication, and minimize uncertainty.
“To address these issues Braden, Mishel & Longman12 tested the effects of a self-help intervention protocol (SHIP) with women with breast cancer undergoing adjuvant treatment, the purpose of which was to increase knowledge about cancer, improve problem-solving, redirect negative thinking, promote effective communication with health care professionals, and to minimize uncertainty.”
From Self-management: Enabling and empowering patients living with cancer as a chronic illness (2011) · cites this paper as [12]
Cites
Still being checked.
Cited by
Sorted by citations
Self-management approaches for people with chronic conditions: a review
Barlow, J., Wright, C., Sheasby, J., Turner, A., & Hainsworth, J. (2002) · Patient Education and Counseling · doi:10.1016/s0738-3991(02)00032-0 · Cited by 2,800 · see citing works
Self-management: Enabling and empowering patients living with cancer as a chronic illness
McCorkle, R., Ercolano, E., Lazenby, M., Schulman-Green, D., Schilling, L. S., Lorig, K., & Wagner, E. H. (2011) · CA: A Cancer Journal for Clinicians · doi:10.3322/caac.20093 · Cited by 950 · see citing works
Quality of Life of Women With Recurrent Breast Cancer and Their Family Members
Northouse, L., Mood, D., Kershaw, T., Schafenacker, A., Mellon, S., Walker, J. G., Galvin, E. A., & Decker, V. B. (2002) · Journal of Clinical Oncology · doi:10.1200/jco.2002.02.054 · Cited by 403 · see citing works
Quality of life and breast cancer: Relationship to psychosocial variables
Shapiro, S. L., López, A. M., Schwartz, G. E., Bootzin, R. R., Figueredo, A. J., Braden, C. J., & Kurker, S. F. (2001) · Journal of Clinical Psychology · doi:10.1002/jclp.1026 · Cited by 269 · see citing works
Self-citationCappiello, M., Cunningham, R. S., Knobf, M. T., & Erdos, D. (2007) · Clinical Nursing Research · doi:10.1177/1054773807306553 · Cited by 214 · see citing works
Helping patients with localized prostate carcinoma manage uncertainty and treatment side effects
Mishel, M. H., Belyea, M. J., Germino, B. B., Stewart, J. L., Bailey, D. E., Robertson, C. N., & Mohler, J. L. (2002) · Cancer · doi:10.1002/cncr.10390 · Cited by 210 · see citing works
Self-citationEffect of a cognitive behavioral intervention on reducing symptom severity during chemotherapy
Given, C., Given, B., Rahbar, M., Jeon, S., McCorkle, R., Cimprich, B., Galecki, A., Kozachik, S., Brady, A., Fisher-Malloy, M. J., et al. (2004) · Journal of Clinical Oncology · doi:10.1200/jco.2004.01.241 · Cited by 180 · see citing works
Mutation and expression of the metastasis suppressor gene KAI1 in esophageal squamous cell carcinoma
Miyazaki, T., Kato, H., Shitara, Y., Yoshikawa, M., Tajima, K., Masuda, N., Shouji, H., Tsukada, K., Nakajima, T., & Kuwano, H. (2000) · Cancer · doi:10.1002/1097-0142(20000901)89:5 · Cited by 84 · see citing works
Psychosocial and sexual functioning of survivors of breast cancer
Kornblith, A. B., & Ligibel, J. A. (2003) · Seminars in Oncology · doi:10.1053/j.seminoncol.2003.08.025 · Cited by 176 · see citing works
Uncertainty in Breast, Prostate, and Colorectal Cancer: Implications for Supportive Care
Shaha, M., Cox, C. L., Talman, K., & Kelly, D. M. (2008) · Journal of Nursing Scholarship · doi:10.1111/j.1547-5069.2007.00207.x · Cited by 162 · see citing works
Ross, L., Boesen, E. H., Dalton, S. O., & Johansen, C. (2002) · European Journal of Cancer · doi:10.1016/s0959-8049(02)00126-0 · Cited by 155 · see citing works
Meneses, K., McNees, P., Loerzel, V. W., Su, X., Zhang, Y., & Hassey, L. A. (2007) · Oncology nursing forum · doi:10.1188/07.onf.1007-1016 · Cited by 143 · see citing works
Patient Autonomy and the Challenge of Clinical Uncertainty
Parascandola, M. J., Hawkins, J. S., & Danis, M. (2002) · Kennedy Institute of Ethics journal · doi:10.1353/ken.2002.0018 · Cited by 134 · see citing works
Dalton, S. O., Boesen, E. H., Ross, L., Schapiro, I. R., & Johansen, C. (2002) · European Journal of Cancer · doi:10.1016/s0959-8049(02)00099-0 · Cited by 126 · see citing works
Scheier, M. F., Helgeson, V. S., Schulz, R., Colvin, S., Berga, S., Bridges, M. W., Knapp, J., Gerszten, K., & Pappert, W. S. (2005) · Journal of Clinical Oncology · doi:10.1200/jco.2005.05.362 · Cited by 125 · see citing works
Intervention to Improve Psychological Functioning for Newly Diagnosed Patients With Cancer
Rawl, S. M., Given, B. A., Given, C. W., Champion, V. L., Kozachik, S., Barton, D. L., Emsley, C. L., & Williams, S. D. (2002) · Oncology nursing forum · doi:10.1188/02.onf.967-975 · Cited by 123 · see citing works
Badger, T. A., Segrin, C. G., Meek, P., López, A. M., Bonham, E., & Sieger, A. (2005) · Oncology nursing forum · doi:10.1188/05.onf.273-279 · Cited by 118 · see citing works
Age, Self‐Efficacy, and Change in Patients' Adjustment to Cancer
Lev, E. L., Paul, D., & Owen, S. V. (1999) · Cancer Practice · doi:10.1046/j.1523-5394.1999.74004.x · Cited by 117 · see citing works
Nursing and cancer support groups
Zabalegui, A., Sánchez, S. M., Sanchez, P. D., & Juando, C. (2005) · Journal of Advanced Nursing · doi:10.1111/j.1365-2648.2005.03508.x · Cited by 113 · see citing works
Badger, T. A., Braden, C. J., & Mishel, M. H. (2001) · PubMed · Cited by 110 · see citing works
Self-citationBadger, T. A., Braden, C. J., Mishel, M. H., & Longman, A. J. (2004) · Research in Nursing & Health · doi:10.1002/nur.20002 · Cited by 108 · see citing works
Self-citationHubbard, G., Kidd, L., Donaghy, E., McDonald, C., & Kearney, N. (2006) · Patient Education and Counseling · doi:10.1016/j.pec.2006.02.009 · Cited by 104 · see citing works
Ngai, F.-W., Chan, S. W.-C., & Ip, W.-Y. (2009) · International Journal of Nursing Studies · doi:10.1016/j.ijnurstu.2009.03.007 · Cited by 99 · see citing works
Zhang, Y., Kwekkeboom, K. L., & Petrini, M. A. (2014) · Cancer Nursing · doi:10.1097/ncc.0000000000000165 · Cited by 78 · see citing works
Hoff, A. L., Mullins, L. L., Gillaspy, S. R., Page, M. C., Pelt, J. C. V., & Chaney, J. M. (2005) · Families Systems & Health · doi:10.1037/1091-7527.23.3.329 · Cited by 69 · see citing works
Wilson, P. M. (2007) · Journal of Cancer Survivorship · doi:10.1007/s11764-007-0040-z · Cited by 68 · see citing works
Predicting well‐being among breast cancer survivors
Dirksen, S. R. (2000) · Journal of Advanced Nursing · doi:10.1046/j.1365-2648.2000.01559.x · Cited by 63 · see citing works
Effects of teaching resourcefulness skills to elders
Zauszniewski, J. A., Eggenschwiler, K., Preechawong, S., Roberts, B. L., & Morris, D. L. (2006) · Aging & Mental Health · doi:10.1080/13607860600638446 · Cited by 59 · see citing works
Stuifbergen, A. M., Morris, M., Jung, J. H., Pierini, D., & Morgan, S. (2009) · Disability and health journal · doi:10.1016/j.dhjo.2009.10.007 · Cited by 54 · see citing works
Caregivers' anxiety and self-efficacy in palliative care
Mystakidou, K., Parpa, E., Panagiotou, I. E., Tsilika, E., Galanos, A., & Gouliamos, A. (2012) · European Journal of Cancer Care · doi:10.1111/ecc.12012 · Cited by 52 · see citing works
Multidisciplinary rehabilitation for follow-up of women treated for breast cancer
Khan, F., Amatya, B., Ng, L., Demetrios, M., Zhang, N. Y., & Turner‐Stokes, L. F. (2012) · Cochrane Database of Systematic Reviews · doi:10.1002/14651858.cd009553.pub2 · Cited by 51 · see citing works
A Case Study of Telephone Interpersonal Counseling for Women With Breast Cancer and Their Partners
Badger, T. A., Segrin, C. G., Meek, P., López, A. M., & Bonham, E. (2004) · Oncology nursing forum · doi:10.1188/04.onf.997-1003 · Cited by 50 · see citing works
Optimizing post-acute care in breast cancer survivors: a rehabilitation perspective
Amatya, B., Khan, F., & Galea, M. P. (2017) · Journal of Multidisciplinary Healthcare · doi:10.2147/jmdh.s117362 · Cited by 48 · see citing works
Man to Man and Side by Side, They Cope with Prostate Cancer
Arrington, M. I., Grant, C. H., & Vanderford, M. L. (2005) · Journal of Psychosocial Oncology · doi:10.1300/j077v23n04_05 · Cited by 41 · see citing works
White, M. M., Chaney, J. M., Mullins, L. L., Wagner, J. L., Hommel, K. A., Andrews, N. R., & Jarvis, J. N. (2005) · Rehabilitation Psychology · doi:10.1037/0090-5550.50.3.224 · Cited by 36 · see citing works
A Test of Braden's Self‐Help Model in Adults with Chronic Pain
LeFort, S. M. (2000) · Journal of Nursing Scholarship · doi:10.1111/j.1547-5069.2000.00153.x · Cited by 33 · see citing works
Sources of the Uncertainty Experienced by Women With HPV
Kosenko, K. A., Hurley, R. J., & Harvey, J. (2011) · Qualitative Health Research · doi:10.1177/1049732311424404 · Cited by 32 · see citing works
Further explorations of illness uncertainty: carers’ experiences of Parkinson’s disease
Hurt, C. S., Cleanthous, S., & Newman, S. P. (2017) · Psychology and Health · doi:10.1080/08870446.2017.1283041 · Cited by 32 · see citing works
Smith‐Turchyn, J., Morgan, A. R., & Richardson, J. A. (2015) · Clinical Oncology · doi:10.1016/j.clon.2015.10.003 · Cited by 32 · see citing works
Quality of Life in Cancer Survivorship: 20 Years Later
Meneses, K., & Benz, R. L. (2010) · Seminars in Oncology Nursing · doi:10.1016/j.soncn.2009.11.006 · Cited by 31 · see citing works
Experiences and resources of breast cancer patients in short-stay surgery
SAARES, P., & Suominen, T. (2005) · European Journal of Cancer Care · doi:10.1111/j.1365-2354.2005.00512.x · Cited by 31 · see citing works
“Coming to Grips” with Chemotherapy-Induced Premature Menopause
Knobf, M. T. (2008) · Health Care For Women International · doi:10.1080/07399330701876562 · Cited by 30 · see citing works
Zhang, Q., Zhang, L., Yin, R., Fu, T., Chen, H., & Shen, B. (2017) · European Journal of Cancer Care · doi:10.1111/ecc.12632 · Cited by 29 · see citing works
Randomized trial of therapeutic group by teleconference
Heiney, S. P., Underwood, S. M., Tavakoli, A. S., Adams, S. A., Wells, L. M., & Bryant, L. H. (2011) · Cancer · doi:10.1002/cncr.26676 · Cited by 27 · see citing works
Marshall, C., Badger, T. A., Curran, M. A., Kœrner, S. S., Larkey, L., Weihs, K. L., Verdugo, L., & García, F. (2011) · Psycho-Oncology · doi:10.1002/pon.2108 · Cited by 27 · see citing works
Ngai, F., Chan, S. W., & Holroyd, E. A. (2007) · Journal of Clinical Nursing · doi:10.1111/j.1365-2702.2006.01882.x · Cited by 26 · see citing works
Transitioning from active treatment: Colorectal cancer survivors’ health promotion goals
Palmer, N. R., Bartholomew, L. K., McCurdy, S., Basen-Engquist, K. M., & Naik, A. D. (2012) · Palliative & Supportive Care · doi:10.1017/s1478951512000788 · Cited by 25 · see citing works
Badger, T. A., Braden, C. J., Longman, A. J., & Mishel, M. M. (1999) · Journal of Psychosocial Oncology · doi:10.1300/j077v17n02_02 · Cited by 24 · see citing works
Self-citationUtility of retrospective pretest ratings of patient satisfaction with health status§
Kreulen, G. J., Stommel, M., Gutek, B. A., Burns, L. R., & Braden, C. J. (2002) · Research in Nursing & Health · doi:10.1002/nur.10031 · Cited by 21 · see citing works
Self-citationWell-Being in Hispanic and Non-Hispanic White Survivors of Breast Cancer
Dirksen, S. R., & Erickson, J. R. (2002) · Oncology nursing forum · doi:10.1188/02.onf.820-826 · Cited by 20 · see citing works
Health-Promoting Behaviors of Low-Income Cancer Survivors
Meraviglia, M. G., & Stuifbergen, A. M. (2011) · Clinical Nurse Specialist · doi:10.1097/nur.0b013e3182157786 · Cited by 18 · see citing works
Owens, B. (2007) · Oncology nursing forum · doi:10.1188/07.onf.e42-e50 · Cited by 16 · see citing works
Life Skills Training Effectiveness on Non-Metastatic Breast Cancer Mental Health: A Clinical Trial
Shabani, M., Moghimi, M., Zamiri, R. E., Nazari, F., Mousavinasab, N., & Shajari, Z. (2014) · Iranian Red Crescent Medical Journal · doi:10.5812/ircmj.8763 · Cited by 16 · see citing works
Kreulen, G. J., & Braden, C. J. (2004) · Research in Nursing & Health · doi:10.1002/nur.20009 · Cited by 15 · see citing works
Self-citationMarshall, C., Curran, M. A., Kœrner, S. S., Kroll, T., Hickman, A., & García, F. (2013) · Journal of Cancer Education · doi:10.1007/s13187-013-0593-7 · Cited by 13 · see citing works
Heron‐Speirs, H. A., Harvey, S. T., & Baken, D. (2012) · Clinical Psychology Science and Practice · doi:10.1111/j.1468-2850.2012.01274.x · Cited by 16 · see citing works
Multidisciplinary Specialty Teams: A Self-Management Program for Patients With Advanced Cancer.
Tocchi, C., McCorkle, R. C., & Knobf, M. T. (2015) · PubMed Central · Cited by 11 · see citing works
The nursing role in radiation oncology
Shepard, N., & Kelvin, J. F. (1999) · Seminars in Oncology Nursing · doi:10.1016/s0749-2081(99)80053-9 · Cited by 10 · see citing works
Kidd, L. (2007) · Stirling Online Research Repository (University of Stirling) · Cited by 9 · see citing works
Fortin, J., Rudd, É., Trudel‐Fitzgerald, C., Cordova, M. J., Marin, M., & Brunet, A. (2024) · Psychology Health & Medicine · doi:10.1080/13548506.2024.2430796 · Cited by 8 · see citing works
Psychological Support for Cancer Patients
Khalid, S., Abbas, I., & Javed, S. (2023) · Cancer treatment and research · doi:10.1007/978-3-031-27156-4_13 · Cited by 7 · see citing works
Mansfield, E. L., Mackenzie, L., Carey, M. L., Peek, K., Shepherd, J., & Evans, T. (2017) · Supportive Care in Cancer · doi:10.1007/s00520-017-3896-0 · Cited by 7 · see citing works
Marshall, C. A., Curran, M. A., Brownmiller, G., Solarte, A., Armin, J. S., Hamann, H. A., Crist, J. D., Niemelä, M., Badger, T. A., & Weihs, K. L. (2018) · Psycho-Oncology · doi:10.1002/pon.4841 · Cited by 7 · see citing works
The Impact of Myasthenia Gravis on Mood, Cognitive Function, and Quality of Life
Paul, R. H., Mullins, L. L., & Gilchrist, J. M. (2008) · Humana Press eBooks · doi:10.1007/978-1-59745-156-7_17 · Cited by 4 · see citing works
Lee, K.-T., Rong, J., Hsu, S.-P., Liu, C., & Kuo, C. (2018) · International Journal of Studies in Nursing · doi:10.20849/ijsn.v3i2.384 · Cited by 3 · see citing works
Predictors of Psychological Health in Myasthenia Gravis
Paul, R. H., & Garcia-Egan, P. M. (2018) · Springer eBooks · doi:10.1007/978-3-319-73585-6_18 · Cited by 2 · see citing works
Multidisciplinary Rehabilitation in Women with Breast Cancer: a Systematic Review
Amatya, F. K. B. (2013) · International Journal of Physical Medicine & Rehabilitation · doi:10.4172/2329-9096.s1-001 · Cited by 2 · see citing works
Mindfulness-based stress reduction and breast cancer
Shapiro, S. L. (2002) · UA Campus Repository (The University of Arizona) · Cited by 2 · see citing works
Grupos de apoyo al paciente oncológico: revisión sistemática
Zabalegui, A., Quinto, S. S., Castillo, P. D. S., & Prats, C. J. (2005) · Enfermería Clínica · doi:10.1016/s1130-8621(05)71073-1 · Cited by 1 · see citing works
The Evolution of Un Abrazo Para La Familia: Implications for Survivors of Cancer
Marshall, C., Curran, M. A., Trejo, J. I., Gonzalez, A. A., Armin, J. S., Hamann, H. A., Badger, T. A., & García, F. (2020) · Journal of Cancer Education · doi:10.1007/s13187-020-01737-x · Cited by 1 · see citing works
Physiotherapeutische und medizinische Aspekte
Hewitt, B. (2013) · Elsevier eBooks · doi:10.1016/b978-3-437-45101-0.00002-2 · Cited by 1 · see citing works
外来化学療法を受ける消化器がん術後患者の症状体験,セルフマネジメント力,自己効力感,QOLの実態および関連
北村, 佳. (2014) · Kanazawa University Repository for Academic Resources (DSpace) (Kanazawa University) · doi:10.18906/jjscn.2014-28-3-13 · Cited by 1 · see citing works
EDUCATIONAL NEEDS OF INDIVIDUALS WITH ATRIAL FIBRILLATION
Martin, D. R. (2014) · Montana State University ScholarWorks (Montana State University) · Cited by 1 · see citing works
Evaluation of a nursing intervention for women experiencing treatment for breast cancer
Schuldheis, S. (2000) · UA Campus Repository (The University of Arizona) · Cited by 1 · see citing works
Guill, B., & Raynor, R. H. (2008) · Cambridge University Press eBooks · doi:10.1017/cbo9780511545900.022
The Effects of a Comprehensive Post-Treatment Recovery Program for Breast Cancer Survivors
Hockett, K. A. (2005) · Digital Commons - University of South Florida (University of South Florida)
Ross, L., Johansen, C., & Boesen, E. H. (2004) · CRC Press eBooks · doi:10.1201/9781420039702.ch3
(2021) · Elsevier eBooks · doi:10.1016/b978-3-437-22851-3.50032-3
Morita (2000) · doi:10.1002/(sici)1099-1611(200003/04)9:2
- Authors
- Braden, C., Mishel, M., & Longman, A.
- Affiliations
- University of Arizona (US)
- Venue
- Cancer Practice
- Publisher
- Wiley
- Published
- 1998-03
- Volume
- 6
- Issue
- 2
- Pages
- 87-98
- ISSN
- 1065-4704 (ISSN-L)
- 1523-5394
- OpenAlex
- W2049995152
- Cited by
- 79
- References
- 0
- Citations by year
- 2024: 1 · 2023: 1 · 2021: 1 · 2020: 1 · 2018: 3 · 2017: 4 · 2015: 2 · 2014: 4 · 2013: 3 · 2012: 4
- FWCI
- 1.46
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Cancer Practice (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Institutes of Health (2r01ca048450-05)
- Agency for Healthcare Research and Quality (R13HS016881)
- National Cancer Institute (1 RO1 CA48450, 5201 CA48450)
- National Institute of General Medical Sciences (R01GM088781)
- Topics
- Health Sciences › Medicine › Oncology › Cancer survivorship and care
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Women's cancer prevention and management
- Health Sciences › Health Professions › Pharmacy › Nursing care and research
- Keywords
- breast cancer, self-help intervention, self-care, uncertainty management, resourcefulness, psychological adjustment, adjuvant therapy, supportive care, chemotherapy, radiotherapy, hormone therapy, treatment side effects, self-management
- MeSH terms
- Adaptation, Psychological, Adult, Aged, Aged, 80 and over, Breast Neoplasms, Female, Health Promotion, Humans, Middle Aged, Oncology Nursing, Patient Education as Topic, Self Care, Program Evaluation, Multivariate Analysis
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