Table 1. Baseline patient characteristics.

Characteristic	All patients (N=282)
Median age in years (range)	43 (20-75)
20-29	33 (12%)
30-39	72 (25%)
40-49	97 (34%)
50-59	58 (21%)
60+	22 (8%)
Ethnicity
Caucasian	272 (96.5%)
Other	10 (3.5%)
Menopausal status
Premenopausal	199 (71%)
Postmenopausal	79 (28%)
Primary reason for referral
FH of breast or ovarian cancer	194 (69%)
FH or personal history of a known genetic mutation	20 (7%)
Breast symptom	19 (7%)
Abnormal imaging	17 (6%)
LCIS or atypical hyperplasia	30 (11%)
Family history
Average number of affected members (range)	2 (0-9)
Mean age of the youngest relative with breast cancer (range)	42 (19-80)
Calculated lifetime risk of breast cancer of 20% or greater	146 (51%)
Personal history of a genetic mutation	30 (11%)
FH of a known genetic mutation	39 (14%)

FH= Family History; LCIS= Lobular Carcinoma In Situ.