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. 2007 Jun 22;7:107. doi: 10.1186/1471-2407-7-107

Table 2.

Rare allele carriage rates in breast cancer and controls

Groups	Rare allele (A) carriage rate (%)		Odds Ratio (95% CI)	Test statistic (p value)^#

	Cancer	Controls
Overall	136/846 (16.1%)	115/707 (16.3%)	0.99 (0.75–1.29)	×²= 0.001; p = 0.97
Positive family history*	38/231 (16.5%)	22/153 (14.4%)	0.17 (0.66–2.07)	×²= 0.16; p = 0.69
Negative family history*	98/615 (15.9%)	93/554 (16.8%)	0.94 (0.69–1.28)	×²= 0.1; p = 0.75
Young patients vs. controls**	20/130 (15.4%)	115/707 (16.3%)	0.94 (0.56–1.57)	×²= 0.01; p = 0.90

# Pearson's chi-square test (with Yates correction where applicable)

*Family history: either first or second-degree relative with breast cancer

**Young cancer patients: </= 50 years of age