Table 2.

The mean of age onset of each group

Gene variant	n (%)	Age at onset (year)		Pairwise comparison p value
		Mean ± SD	Range	BRCA1+	BRCA2+	BRCA1/2−
BRCA1+	481	43.6 ± 12.5	21–99	–
BRCA2+	473	45.2 ± 11.1	19–84	0.0175	–
BRCA1/2−	2937	48.8 ± 12.6	17–95	<0.001	<0.001	–

SD standard deviation