Prevalence of Breast Cancer Risk Factors in Japan

Mizota, Yuri; Yamamoto, Seiichiro

doi:10.1093/jjco/hys144

Cited by 15 publications

(7 citation statements)

References 8 publications

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“…This could be explained by the fact that less than 5% of women in both the control and cancer groups had a history of smoking, and less than 1% consumed alcohol. Whilst in agreement with neighboring countries such as China [ 11 ] and Thailand [ 24 ], this is in contrast to data from Australia and Japan [ 25 , 26 ].…”

Section: Discussioncontrasting

confidence: 47%

Risk Factors of Female Breast Cancer in Vietnam: A Case-Control Study

et al. 2017

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PurposeRates of women with breast cancer have increased rapidly in recent years in Vietnam, with over 10,000 new patients contracting the disease every year. This study was conducted to identify demographic, reproductive and lifestyle risk factors for breast cancer in Vietnam.Materials and MethodsBreast density, demographic, reproductive and lifestyle data of 269 women with breast cancer and 519 age-matched controls were collected in the two largest oncology hospitals in Vietnam (one in the north and one in the south). Baseline differences between cases and controls in all women, premenopausal and postmenopausal women were assessed using chi-squared tests and independent t tests. Conditional logistic regression was used to derive odds ratios (OR) for factors that had statistically significant associations with breast cancer.ResultsVietnamese women with breast cancer were significantly more likely to have a breast density > 75% (OR, 1.7), be younger than 14 years at first menstrual period (OR, 2.2), be postmenopausal (OR, 2.0), have less than three pregnancies (OR, 2.1), and have less than two babies (OR, 1.7). High breast density (OR, 1.6), early age at first menstrual period (OR, 2.6), low number of pregnancies (OR, 2.3), hormone use (OR, 1.8), and no physical activities (OR, 2.2) were significantly associated with breast cancer among premenopausal women, while breast density (OR, 2.0), age at first menstrual period (OR, 1.8), number of pregnancies (OR, 2.3), and number of live births (OR, 2.4) were the risk factors for postmenopausal women.ConclusionBreast density, age at first menarche, menopause status, number of pregnancies, number of babies born, hormone use and physical activities were significantly associated with breast cancer in Vietnamese women.

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Section: Discussioncontrasting

confidence: 47%

Risk Factors of Female Breast Cancer in Vietnam: A Case-Control Study

et al. 2017

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“…Based on time-trend analyses of national health data or ecologic studies, it has been posited that changes in dietary habits to a more western style (i.e., higher intake of calorie, fat, animal protein) correlate with an increased breast cancer incidence among women residing in Asian countries (Kim et al, 2009;El-Basmy et al, 2012;Mizota and Yamamoto, 2012). In large cohort studies however, this association has not been consistent: an increased risk of breast cancer was observed among Shanghai women in association with a higher intake of animal-derived fat (Kallianpur et al, 2008); whereas, fat consumption was not associated with breast cancer risk among Japanese women .…”

Section: Discussionmentioning

confidence: 99%

Differences in Incidence, Mortality and Survival of Breast Cancer by Regions and Countries in Asia and Contributing Factors

Kim¹,

Yoo

Goodman

2015

Asian Pacific Journal of Cancer Prevention

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“…The variable of family history, which got the highest structure coefficient, is a common and important predictor for the prognosis of breast cancer ( 21 , 22 ). The second variable among predictors set (based on its structure coefficient) is estrogen receptor.…”

Section: Discussionmentioning

confidence: 99%

Application of Canonical Correlation Analysis for Detecting Risk Factors Leading to Recurrence of Breast Cancer

Sadoughi

Afshar

Olfatbakhsh

et al. 2016

Iran Red Crescent Med J

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Background:Advances in treatment options of breast cancer and development of cancer research centers have necessitated the collection of many variables about breast cancer patients. Detection of important variables as predictors and outcomes among them, without applying an appropriate statistical method is a very challenging task. Because of recurrent nature of breast cancer occurring in different time intervals, there are usually more than one variable in the outcome set. For the prevention of this problem that causes multicollinearity, a statistical method named canonical correlation analysis (CCA) is a good solution.Objectives:The purpose of this study was to analyze the data related to breast cancer recurrence of Iranian females using the CCA method to determine important risk factors.Patients and Methods:In this cross-sectional study, data of 584 female patients (mean age of 45.9 years) referred to Breast Cancer Research Center (Tehran, Iran) were analyzed anonymously. SPSS and NORM softwares (2.03) were used for data transformation, running and interpretation of CCA and replacing missing values, respectively. Data were obtained from Breast Cancer Research Center, Tehran, Iran.Results:Analysis showed seven important predictors resulting in breast cancer recurrence in different time periods. Family history and loco-regional recurrence more than 5 years after diagnosis were the most important variables among predictors and outcomes sets, respectively.Conclusions:Canonical correlation analysis can be used as a useful tool for management and preparing of medical data for discovering of knowledge hidden in them.

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Prevalence of Breast Cancer Risk Factors in Japan

Abstract: We showed a clear increase in the prevalence of risk factors for breast cancer. Based on the results, the incidence of breast cancer in Japan may be increasing for at least a few decades.

Cited by 15 publications

References 8 publications

Risk Factors of Female Breast Cancer in Vietnam: A Case-Control Study

Risk Factors of Female Breast Cancer in Vietnam: A Case-Control Study

Differences in Incidence, Mortality and Survival of Breast Cancer by Regions and Countries in Asia and Contributing Factors

Application of Canonical Correlation Analysis for Detecting Risk Factors Leading to Recurrence of Breast Cancer

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