Breastfeeding and breast cancer risk in India: A multicenter case‐control study
Breast cancer incidence is low in India compared with high‐income countries, but it has increased in recent decades, particularly among urban women. The reasons for this pattern are not known although they are likely related to reproductive and lifestyle factors. Here, we report the results of a lar...
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| Veröffentlicht in: | International journal of cancer 2009-08, Vol.125 (3), p.662-665 |
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| container_title | International journal of cancer |
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| creator | Gajalakshmi, Vendhan Mathew, Aleyamma Brennan, Paul Rajan, Balakrishnan Kanimozhi, Vendhan C. Mathews, Anitha Mathew, Beela S. Boffetta, Paolo |
| description | Breast cancer incidence is low in India compared with high‐income countries, but it has increased in recent decades, particularly among urban women. The reasons for this pattern are not known although they are likely related to reproductive and lifestyle factors. Here, we report the results of a large case‐control study on the association between breastfeeding and breast cancer risk. The study was conducted in 2 areas in South India during 2002–2005 and included 1,866 cases and 1,873 controls. Detailed information regarding menstruation, reproduction, breastfeeding and physical activity was collected through in‐person interview. Odds ratios (OR) and 95% confidence intervals (CI) were estimated by unconditional logistic regression models. Breastfeeding for long duration was common in the study population. Lifetime duration of breastfeeding was inversely associated with breast cancer risk among premenopausal women (p‐value of linear trend, 0.02). No such protective effect was observed in postmenopausal women, among whom a protective effect of parity was suggested. A reduction of breast cancer risk with prolonged breastfeeding was shown among premenopausal women. Health campaign focusing on breastfeeding behavior by appropriately educating women would contribute to reduce breast cancer burden. © 2009 UICC |
| doi_str_mv | 10.1002/ijc.24429 |
| format | Article |
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The reasons for this pattern are not known although they are likely related to reproductive and lifestyle factors. Here, we report the results of a large case‐control study on the association between breastfeeding and breast cancer risk. The study was conducted in 2 areas in South India during 2002–2005 and included 1,866 cases and 1,873 controls. Detailed information regarding menstruation, reproduction, breastfeeding and physical activity was collected through in‐person interview. Odds ratios (OR) and 95% confidence intervals (CI) were estimated by unconditional logistic regression models. Breastfeeding for long duration was common in the study population. Lifetime duration of breastfeeding was inversely associated with breast cancer risk among premenopausal women (p‐value of linear trend, 0.02). No such protective effect was observed in postmenopausal women, among whom a protective effect of parity was suggested. A reduction of breast cancer risk with prolonged breastfeeding was shown among premenopausal women. Health campaign focusing on breastfeeding behavior by appropriately educating women would contribute to reduce breast cancer burden. © 2009 UICC</description><identifier>ISSN: 0020-7136</identifier><identifier>EISSN: 1097-0215</identifier><identifier>DOI: 10.1002/ijc.24429</identifier><identifier>PMID: 19452516</identifier><identifier>CODEN: IJCNAW</identifier><language>eng</language><publisher>Hoboken: Wiley Subscription Services, Inc., A Wiley Company</publisher><subject>Adult ; Age Factors ; Aged ; Biological and medical sciences ; breast cancer ; Breast Feeding ; Breast Neoplasms - epidemiology ; Breast Neoplasms - prevention & control ; breastfeeding ; Case-Control Studies ; Female ; Gynecology. Andrology. Obstetrics ; Humans ; Incidence ; India ; India - epidemiology ; Mammary gland diseases ; Medical sciences ; Menarche ; Middle Aged ; Odds Ratio ; Parity ; Postmenopause ; Pregnancy ; Premenopause ; Risk Assessment ; Risk Factors ; Tumors ; Urban Population - statistics & numerical data</subject><ispartof>International journal of cancer, 2009-08, Vol.125 (3), p.662-665</ispartof><rights>Copyright © 2009 UICC</rights><rights>2009 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4519-104b4da0dda3ae5a69ea299873dbeb0f7607b359414acfacf15488a265563763</citedby><cites>FETCH-LOGICAL-c4519-104b4da0dda3ae5a69ea299873dbeb0f7607b359414acfacf15488a265563763</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fijc.24429$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fijc.24429$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=21615244$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/19452516$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Gajalakshmi, Vendhan</creatorcontrib><creatorcontrib>Mathew, Aleyamma</creatorcontrib><creatorcontrib>Brennan, Paul</creatorcontrib><creatorcontrib>Rajan, Balakrishnan</creatorcontrib><creatorcontrib>Kanimozhi, Vendhan C.</creatorcontrib><creatorcontrib>Mathews, Anitha</creatorcontrib><creatorcontrib>Mathew, Beela S.</creatorcontrib><creatorcontrib>Boffetta, Paolo</creatorcontrib><title>Breastfeeding and breast cancer risk in India: A multicenter case‐control study</title><title>International journal of cancer</title><addtitle>Int J Cancer</addtitle><description>Breast cancer incidence is low in India compared with high‐income countries, but it has increased in recent decades, particularly among urban women. The reasons for this pattern are not known although they are likely related to reproductive and lifestyle factors. Here, we report the results of a large case‐control study on the association between breastfeeding and breast cancer risk. The study was conducted in 2 areas in South India during 2002–2005 and included 1,866 cases and 1,873 controls. Detailed information regarding menstruation, reproduction, breastfeeding and physical activity was collected through in‐person interview. Odds ratios (OR) and 95% confidence intervals (CI) were estimated by unconditional logistic regression models. Breastfeeding for long duration was common in the study population. Lifetime duration of breastfeeding was inversely associated with breast cancer risk among premenopausal women (p‐value of linear trend, 0.02). No such protective effect was observed in postmenopausal women, among whom a protective effect of parity was suggested. A reduction of breast cancer risk with prolonged breastfeeding was shown among premenopausal women. Health campaign focusing on breastfeeding behavior by appropriately educating women would contribute to reduce breast cancer burden. © 2009 UICC</description><subject>Adult</subject><subject>Age Factors</subject><subject>Aged</subject><subject>Biological and medical sciences</subject><subject>breast cancer</subject><subject>Breast Feeding</subject><subject>Breast Neoplasms - epidemiology</subject><subject>Breast Neoplasms - prevention & control</subject><subject>breastfeeding</subject><subject>Case-Control Studies</subject><subject>Female</subject><subject>Gynecology. Andrology. Obstetrics</subject><subject>Humans</subject><subject>Incidence</subject><subject>India</subject><subject>India - epidemiology</subject><subject>Mammary gland diseases</subject><subject>Medical sciences</subject><subject>Menarche</subject><subject>Middle Aged</subject><subject>Odds Ratio</subject><subject>Parity</subject><subject>Postmenopause</subject><subject>Pregnancy</subject><subject>Premenopause</subject><subject>Risk Assessment</subject><subject>Risk Factors</subject><subject>Tumors</subject><subject>Urban Population - statistics & numerical data</subject><issn>0020-7136</issn><issn>1097-0215</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp90NFKHDEUBuAgFXe1XvQFSm6q9GI0J5NkNt7p0uqKUIS9H84kmZLt7Mw2mUH2ro_gM_okRmfRqwqBAzkf_4GfkC_AzoAxfu5X5owLwfUemQLTRcY4yE9kmnYsKyBXE3IY44oxAMnEAZmAFpJLUFNyfxUcxr52zvr2N8XW0ur1hxpsjQs0-PiH-pYuWuvxgl7S9dD03ri2T0uD0T39ezRd24euobEf7PYz2a-xie54N4_I8ueP5fwmu_t1vZhf3mVGSNAZMFEJi8xazNFJVNoh13pW5LZyFasLxYoql1qAQFOnB1LMZsiVlCovVH5ETsfYTej-Di725dpH45oGW9cNsSyEVAK44EmefChVIYRWszzB7yM0oYsxuLrcBL_GsC2BlS9Fl6no8rXoZL_uQodq7ey73DWbwLcdwGiwqUOq08c3x0GBTFHJnY_uwTdu-_-L5eJ2Pp5-BiGClEA</recordid><startdate>20090801</startdate><enddate>20090801</enddate><creator>Gajalakshmi, Vendhan</creator><creator>Mathew, Aleyamma</creator><creator>Brennan, Paul</creator><creator>Rajan, Balakrishnan</creator><creator>Kanimozhi, Vendhan C.</creator><creator>Mathews, Anitha</creator><creator>Mathew, Beela S.</creator><creator>Boffetta, Paolo</creator><general>Wiley Subscription Services, Inc., A Wiley Company</general><general>Wiley-Blackwell</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7U1</scope><scope>7U2</scope><scope>C1K</scope></search><sort><creationdate>20090801</creationdate><title>Breastfeeding and breast cancer risk in India: A multicenter case‐control study</title><author>Gajalakshmi, Vendhan ; Mathew, Aleyamma ; Brennan, Paul ; Rajan, Balakrishnan ; Kanimozhi, Vendhan C. ; Mathews, Anitha ; Mathew, Beela S. ; Boffetta, Paolo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4519-104b4da0dda3ae5a69ea299873dbeb0f7607b359414acfacf15488a265563763</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Adult</topic><topic>Age Factors</topic><topic>Aged</topic><topic>Biological and medical sciences</topic><topic>breast cancer</topic><topic>Breast Feeding</topic><topic>Breast Neoplasms - epidemiology</topic><topic>Breast Neoplasms - prevention & control</topic><topic>breastfeeding</topic><topic>Case-Control Studies</topic><topic>Female</topic><topic>Gynecology. Andrology. Obstetrics</topic><topic>Humans</topic><topic>Incidence</topic><topic>India</topic><topic>India - epidemiology</topic><topic>Mammary gland diseases</topic><topic>Medical sciences</topic><topic>Menarche</topic><topic>Middle Aged</topic><topic>Odds Ratio</topic><topic>Parity</topic><topic>Postmenopause</topic><topic>Pregnancy</topic><topic>Premenopause</topic><topic>Risk Assessment</topic><topic>Risk Factors</topic><topic>Tumors</topic><topic>Urban Population - statistics & numerical data</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Gajalakshmi, Vendhan</creatorcontrib><creatorcontrib>Mathew, Aleyamma</creatorcontrib><creatorcontrib>Brennan, Paul</creatorcontrib><creatorcontrib>Rajan, Balakrishnan</creatorcontrib><creatorcontrib>Kanimozhi, Vendhan C.</creatorcontrib><creatorcontrib>Mathews, Anitha</creatorcontrib><creatorcontrib>Mathew, Beela S.</creatorcontrib><creatorcontrib>Boffetta, Paolo</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Risk Abstracts</collection><collection>Safety Science and Risk</collection><collection>Environmental Sciences and Pollution Management</collection><jtitle>International journal of cancer</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Gajalakshmi, Vendhan</au><au>Mathew, Aleyamma</au><au>Brennan, Paul</au><au>Rajan, Balakrishnan</au><au>Kanimozhi, Vendhan C.</au><au>Mathews, Anitha</au><au>Mathew, Beela S.</au><au>Boffetta, Paolo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Breastfeeding and breast cancer risk in India: A multicenter case‐control study</atitle><jtitle>International journal of cancer</jtitle><addtitle>Int J Cancer</addtitle><date>2009-08-01</date><risdate>2009</risdate><volume>125</volume><issue>3</issue><spage>662</spage><epage>665</epage><pages>662-665</pages><issn>0020-7136</issn><eissn>1097-0215</eissn><coden>IJCNAW</coden><abstract>Breast cancer incidence is low in India compared with high‐income countries, but it has increased in recent decades, particularly among urban women. The reasons for this pattern are not known although they are likely related to reproductive and lifestyle factors. Here, we report the results of a large case‐control study on the association between breastfeeding and breast cancer risk. The study was conducted in 2 areas in South India during 2002–2005 and included 1,866 cases and 1,873 controls. Detailed information regarding menstruation, reproduction, breastfeeding and physical activity was collected through in‐person interview. Odds ratios (OR) and 95% confidence intervals (CI) were estimated by unconditional logistic regression models. Breastfeeding for long duration was common in the study population. Lifetime duration of breastfeeding was inversely associated with breast cancer risk among premenopausal women (p‐value of linear trend, 0.02). No such protective effect was observed in postmenopausal women, among whom a protective effect of parity was suggested. A reduction of breast cancer risk with prolonged breastfeeding was shown among premenopausal women. Health campaign focusing on breastfeeding behavior by appropriately educating women would contribute to reduce breast cancer burden. © 2009 UICC</abstract><cop>Hoboken</cop><pub>Wiley Subscription Services, Inc., A Wiley Company</pub><pmid>19452516</pmid><doi>10.1002/ijc.24429</doi><tpages>4</tpages></addata></record> |
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| ispartof | International journal of cancer, 2009-08, Vol.125 (3), p.662-665 |
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| source | MEDLINE; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Access via Wiley Online Library |
| subjects | Adult Age Factors Aged Biological and medical sciences breast cancer Breast Feeding Breast Neoplasms - epidemiology Breast Neoplasms - prevention & control breastfeeding Case-Control Studies Female Gynecology. Andrology. Obstetrics Humans Incidence India India - epidemiology Mammary gland diseases Medical sciences Menarche Middle Aged Odds Ratio Parity Postmenopause Pregnancy Premenopause Risk Assessment Risk Factors Tumors Urban Population - statistics & numerical data |
| title | Breastfeeding and breast cancer risk in India: A multicenter case‐control study |
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