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The effects of breast self‐examination in a population‐based cancer registry. A report of differences in extent of disease
Journal article   Peer reviewed

The effects of breast self‐examination in a population‐based cancer registry. A report of differences in extent of disease

Elaine M. Smith and Trudy L. Burns
Cancer, Vol.55(2), pp.432-437
01/15/1985
DOI: 10.1002/1097-0142(19850115)55:2<432::AID-CNCR2820550223>3.0.CO;2-9
PMID: 3965097

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Abstract

This study evaluates the effects of breast self‐examination (BSE) on extent of disease in newly diagnosed Iowa Surveillance, Epidemiology, and End Results (SEER) breast cancer cases (population‐based) between November 1980 and December 1981. Similar to previous findings, BSE patients are more likely to find their tumors than are non‐BSE patients when performed two or more times each year. However, no significant improvement in tumor size, number of lymph nodes, or staging is found. In addition, comparison with age‐frequency matched controls, although supporting various breast cancer risk factors, also seems to identify a BSE response bias since cases were significantly more likely to report performing BSE than controls (P < 0.0001), and BSE cases versus non‐BSE cases show no differences in risks of disease to suggest an association between potential awareness of disease risks with altered health behavior (performing BSE).

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