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Risk of Premenopaus...
Risk of Premenopausal and Postmenopausal Breast Cancer among Multiple Sclerosis Patients
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- Hajiebrahimi, Mohammadhossein (författare)
- Karolinska Institutet
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- Montgomery, Scott, 1961- (författare)
- Karolinska Institutet,Örebro universitet,Institutionen för medicinska vetenskaper,Clinical Epidemiology Unit, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden; Department of Epidemiology and Public Health, University College London, London, United Kingdom,Clinical Epidemiology and Biostatistics
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- Burkill, Sarah (författare)
- Center for Pharmacoepidemiology & Clinical Epidemiology Unit, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
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- Bahmanyar, Shahram (författare)
- Karolinska Institutet
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(creator_code:org_t)
- 2016-10-24
- 2016
- Engelska.
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Ingår i: PLOS ONE. - San Francisco, USA : Public Library of Science. - 1932-6203. ; 11:10
- Relaterad länk:
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https://doi.org/10.1...
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https://journals.plo...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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http://kipublication...
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Abstract
Ämnesord
Stäng
- Objective: To investigate risk of premenopausal and postmenopausal breast cancer among Multiple Sclerosis (MS) patients, considering tumor stage.Methods: The Swedish Patient Register identified 19,330 women with MS between 1968 and 2012, matched individually with a cohort of 193,458 without MS. Matching variables were year of birth, sex, region of residence and vital status at the time of diagnosis. The cancer register identified 471 and 5,753 breast cancer cases among the MS and non-MS cohorts, respectively. Cox proportional hazard models estimated hazard ratios (HR) and 95% confidence intervals (CI) for premenopausal and postmenopausal breast cancer.Results: Overall risk of postmenopausal breast cancer was 13% higher among MS patients compared with women without MS (HR = 1.13, 95% CI 1.02-1.26). Stratified analyses showed that the risk was statistically significantly increased in women diagnosed between 1968 and 1980 and those who were diagnosed at age 65 or older age. We observed a non-statistically significant risk only for stage 0-1 postmenopausal breast cancer (HR = 1.17, 95% CI 0.93-1.48). MS was not associated with premenopausal breast cancer.Conclusion: The modest increased risk of postmenopausal breast cancer in women with MS may be due to surveillance bias, where contact with health services for one disease increases the risk of a second diagnosis being recorded.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Cancer och onkologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Cancer and Oncology (hsv//eng)
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