Epidemiologic comparison of breast cancer patients with early and late onset of malignancy and general population controls

Craig, Thomas V.; Comstock, George W.; Geiser, Patricia B.

doi:10.1097/00006534-197506000-00065

Cited by 11 publications

(11 citation statements)

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“…We therefore suggested that hospitalized women were biased with respect to age at first birth. Although some subsequent studies have failed to confirm the influence of age at first birth (Sartwell et al, 1977;TheinHlaing & Thein-Maung-Myint, 1.978) or found it restricted to young (Craig et al, 1974;Wynder et al, 1978) or older women (Stavraky & Emmons, 1974) other investigations using population controls have revealed that this factor has a significant influence (Shapiro et al, 1973;Lilienfeld et al, 1975;Soini, 1977;Farewell et al, 1977). These controversial findings were the reason for the present study.…”

Section: The High and Increasing Incidencementioning

confidence: 63%

Age at first birth, parity and risk of breast cancer in a Swedish population

Adami¹,

Hansen²,

Jung³

et al. 1980

Br J Cancer

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Summary.-A case-control study was conducted over a period of 11 months in an area containing one-third of the Swedish population. One thousand and one patients participated, constituting 94°, of all women newly diagnosed as having breast cancer within the area. They were compared with 1,001 age-matched, non-hospitalized controls without breast cancer, selected by paired sampling from a population register. The risk of breast cancer was slightly, but significantly, related to parity, the standardized relative risk (SRR) being 1P35 for nulliparous women as compared to ever parous. In the different parity groups a risk significantly lower than that for nulliparous women was found only for women with more than 2 children (SRR = 0-59) but the trend with parity was highly significant (P <0-001). Age at first birth was not found to be an important risk factor for breast cancer. SRR was lower than for nulliparous women in all groups of women with their first birth before the age of 35 years, but the difference was significant (P <0 05) only for those with the first birth between 20 and 24 (SRR=0-69) and 25 and 29 (SRR=0-69) years of age. The trend with age at first birth (P < 0 05) disappeared after stratification for parity, suggesting that it was a confounding factor.

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Section: The High and Increasing Incidencementioning

confidence: 63%

Age at first birth, parity and risk of breast cancer in a Swedish population

Adami¹,

Hansen²,

Jung³

et al. 1980

Br J Cancer

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“…Women whose first full-term pregnancy occurs after age 30 have an increased risk for breast cancer in comparison with nulliparous women or women who have a first full-term pregnancy before approximately age 18 [Logan, 1953;MacMahon et al, 1970;Janerich and Hoff, 1982;Lubin et al, 1982;Trichopoulos et al, 1983;Pathak et al, 1986;Vatten and Kvinnsland, 1992]. However, several variations of these associations have been reported with a few studies suggesting that age at first birth and parity have an independent effect on risk of breast cancer [Lilienfeld et al, 1975;Hlaing and Myint, 1978;Tulinius et al, 1978;Paffenbarger et al, 1979] or that the effect of age at first birth varied with age [Herity et al, 1975;Hlaing and Myint, 1978], menopausal status [Stavraky and Emmons, 1974] or both [Paffenbarger et al, 1979], or that either parity [Craig et al, 1974;Stavraky and Emmons, 1974] or age at first birth [Herity et al, 1975;Adami et al, 1978] had no effect on breast cancer risk.…”

Section: Discussionmentioning

confidence: 99%

Cancer incidence among laboratory workers in biomedical research and routine laboratories in Israel: Part II–nested case‐control study

Shaham¹,

Gurvich²,

Kneshet³

2003

American J Industrial Med

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“…Studies of hormone concentrations measured in the serum of adolescent girls suggest that the earlier menarche occurs, the more rapid is the onset of regular cycles (Apter & Vihko, 1983). Some investigations suggest that an earlier age at menarche is associated with the risk of premenopausal rather than postmenopausal breast cancer (Craig, Comstock & Geiser, 1974). It is generally considered that premenopausal cancer is the type which is by far the most common among women in the East, although data from the Cancer Registries of the National Cancer Institute in Thailand and the Ramathibodi Hospital in Bangkok do not appear to support this view (Parkin, 1986).…”

Section: Discussionmentioning

confidence: 99%

Progesterone concentrations in samples of saliva from adolescent girls living in Britain and Thailand, two countries where women are at widely differing risk of breast cancer

Danutra

Turkes²,

Read³

et al. 1989

Journal of Endocrinology

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Menstrual-cycle patterns of salivary progesterone concentration were obtained for 131 and 245 adolescent girls up to 4 years postmenarche living in Britain and Thailand respectively. These patterns were graded on a scale of 1 (little or no activity) to 5 (activity similar to that exhibited by the mature premenopausal woman) and the frequency of these grades within groups of girls from each centre was analysed. The major finding was that British girls exhibited a predominance of higher grades of progesterone activity when compared with their Thai counterparts (n = 2 x 58) when matched for chronological and gynaecological ages (P approximately 0.002). This was particularly so for the girls from these two matched groups in the gynaecological age range 2-4 years (P approximately 0.03). The major contribution to this significant difference between the two groups is attributed to the greater effect of chronological age on progesterone secretion in the British girls (P approximately 0.03) compared with the Thai girls (P approximately 0.29). These findings may have implications for facilitating our understanding of the reason for the differing risk of breast cancer in women in both countries.

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Epidemiologic comparison of breast cancer patients with early and late onset of malignancy and general population controls

Cited by 11 publications

References 0 publications

Age at first birth, parity and risk of breast cancer in a Swedish population

Age at first birth, parity and risk of breast cancer in a Swedish population

Cancer incidence among laboratory workers in biomedical research and routine laboratories in Israel: Part II–nested case‐control study

Progesterone concentrations in samples of saliva from adolescent girls living in Britain and Thailand, two countries where women are at widely differing risk of breast cancer

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