Early oral contraceptive use and breast cancer: Results of another case-control study

McPherson, Klim; Mp, Vessey; Neil, Andrew; Doll, Richard; Jones, Lesley; Roberts, M M

doi:10.1038/bjc.1987.261

Cited by 149 publications

(80 citation statements)

References 34 publications

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“…Initial cohort studies in the seventies and early eighties could not find any increase in BC occurrence in oral contraceptive users (Trapido, 1981;Kay & Hannaford, 1988;Vessey et al, 1989;Romieu et al, 1989). More recently, several authors have brought evidence suggesting a potential association between long term oral contraceptive use before FFTP and later occurrence of BC (Paffenberger et al, 1980;Pike et al, 1981;Meirick et al, 1986;MacPherson et al, 1987b;Stadel et al, 1989), although these results have been and are still widely debated (Schlesselman, 1989;Chilvers & Deacon, 1990). Our data are consistent with those findings as we could detect a significant increase of the RR in long term OC users and this tendency was found as well, though attenuated, in long term users before FFTP and, to a lesser extent, in long term users after FFTP.…”

Section: Discussionmentioning

confidence: 99%

“…To investigate the role of cyclical mastalgia as a potential precocious marker of breast steroid susceptibility in relation (Pike et al, 1983;Cancer and Steroid Hormone Study (CASH), 1986;MacPherson et al, 1987b;Miller et al, 1989;Olsson et al, 1989;Stadel et al, 1989;UK National Case-Control Study Group, 1989;Clavel et al, 1991 Oral contraceptive uses were elicited by constructing a monthly calendar of events starting at menarche up to the time of the interview. Contraceptive use was associated with marking events like first sexual intercourse, marriage, FFTP.…”

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confidence: 99%

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Cyclical mastalgia as a marker of breast cancer susceptibility: results of a case-control study among French women

Plu‐Bureau

Jc²,

Sitruk-Ware³

et al. 1992

Br J Cancer

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Cyclical mastalgia as a marker of breast cancer susceptibility: results of a case-control study among French women

Plu‐Bureau

Jc²,

Sitruk-Ware³

et al. 1992

Br J Cancer

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“…Both studies used the same questionnaires and methods to obtain information. The main purpose of the studies was to investigate the relationship between breast cancer and certain aspects of fertility and contraception (McPherson et al, 1987). These two studies provide a unique opportunity to relate differences in calculated relative risks for breast cancer to the way cases and controls were selected.…”

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confidence: 99%

Alcohol, cigarette smoking and breast cancer

Meara

McPherson²,

Roberts³

et al. 1989

Br J Cancer

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This paper reports the results of two separate case-control studies of breast cancer which included questions on exposure to tobacco and alcohol. One study used hospital cases and hospital controls while the other looked at cases identified during mammographic screening compared with normal screenees. Both studies used the same questionnaires and methods to obtain information. The main purpose of the studies was to investigate the relationship between breast cancer and certain aspects of fertility and contraception (McPherson et al., 1987). These two studies provide a unique opportunity to relate differences in calculated relative risks for breast cancer to the way cases and controls were selected. Subec an mwtBetween 1980 and 1984, 998 married women aged 25-59 years, newly presenting with breast cancer at eight hospitals in London and Oxford, and 118 women aged 45-69, diagnosed at the mammographic breast cancer screening clinic in Edinburgh, were interviewed by specially trained nurses. For each London and Oxford patient a married, age-matched (within the same 5-year age group) control was selected at random from female patients in the same hospital who were judged to have conditions which were not associated with breast cancer or with contraceptive practice. The controls in Edinburgh were randomly selected from among the normal screenees. The response rate among women asked to take part approached 100% in both studies.The same questionnaire was used to collect the data in the two studies. As well as information on cigarette smoking and alcohol use (number of cigarettes smoked and alcoholic drinks drunk daily before onset of current illness (or corresponding period for screening controls), age at starting to smoke, history of ever being a regular smoker), data were obtained on socioeconomic status, reproductive variables (including age at menarche, age at menopause, age at first term pregnancy, number of children, details of oral contraceptive use) and other potentially confounding variables (including family history of breast cancer, weight and height).The data in both studies were analysed using a matched pairs multiple logistic method which yielded relative risks for Br.

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“…In 2011, it is projected that there will be 230,480 new cases of invasive breast cancer and 57,650 new diagnoses of in situ breast cancer. In the 1970s to 1980s, many epidemiological studies have found some risk factors for breast cancer such as delayed childbearing, having fewer children, oral contraceptive use and menopausal hormone use (Lilienfeld et al, 1975;Lyle et al, 1980;McPherson et al, 1987). A few studies reported vegetables or fruits intake are associated with a reduction in breast cancer risk recently (Gaudet et al, 2004;Lissowska et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Risk Assessment of Breast Cancer in Guangdong, China: A Community-based Survey

Lin

Shao²,

Zhang³

et al. 2012

Asian Pacific Journal of Cancer Prevention

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Objectives: Compared with Western countries, the incidence rates for breast cancer in China are still low. However, breast cancer appears to be hitting Chinese women at a much younger age, with a peak between 40 and 50 years. Furthermore, breast tumors of Asian women have molecular and genetic characteristics that are different from those of Caucasian women. Methods: A community-based study was designed to evaluate the relationship between lifestyles and breast cancer risk in Chinese women residing in Guangzhou. 16,314 subjects completed the questionnaire. Potential confounding factors included sociodemographic characteristics. Results: 33 individuals reported a history of breast cancer, yielding a prevalence rate of 202.3/100000. Associations between subjects' demographic and breast cancer risk factors were assessed. Breast cancer is associated with family history of breast cancer, X-rays received, benign breast disease and hyperlipoidemia or hypercholesteremia with elevated odds ratios. Conclusions: Family history of breast cancer, X-ray received benign breast disease and hyperlipoidemia or hypercholesteremia were significantly associated with risk of breast cancer and may havepotential for breast cancer risk assessment.

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Early oral contraceptive use and breast cancer: Results of another case-control study

Cited by 149 publications

References 34 publications

Cyclical mastalgia as a marker of breast cancer susceptibility: results of a case-control study among French women

Cyclical mastalgia as a marker of breast cancer susceptibility: results of a case-control study among French women

Alcohol, cigarette smoking and breast cancer

Risk Assessment of Breast Cancer in Guangdong, China: A Community-based Survey

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