Molecular phenotypes and clinical characterization of familial hereditary breast cancer among half and full sisters

Table 2 Comparison of age of onset age across breast cancer subgroups

Variable	NHBC	HBC			Total
Variable	NHBC	CHBC	NCHBC	CHBC + NCHBC	Total
Patients, n	152	18	20	38	190
Ages, years	61.69 ± 14.34	49.06 ± 6.42	60.75 ± 9.95	55.21 ± 10.24	60.41 ± 13.85
	t = 2.57 P < 0.05	t = 4.25 *P < 0.01	t = 0.25 **P > 0.05	t = 4.25 ***P < 0.01	t = 3.4 ^#P < 0.001	t = 2.15 ^△P < 0.05

Continuous variables are presented as mean ± standard deviation
HBC hereditary breast cancer, NHBC non-hereditary breast cancer, CHBC contemporaneous hereditary breast cancer, NCHBC non-contemporaneous hereditary breast cancer
P = NHBC versus HBC, *P = NHBC versus CHBC, **P = NHBC versus NCHBC, ***P = CHBC versus NCHBC, ^#P = CHBC versus (NHBC + HBC), ^△P = NCHBC versus (NHBC + HBC)

ISSN: 1472-6874