Table 1 Study participant characteristics

Age, mean (range)

53.9 (29–73)

53.6 (28–74)

0.837^a

BMI, mean (SD)

30.4 (6.3)

30.6 (6.5)

0.904^a

Tyrer-Cuzick lifetime risk score, mean (SD)

12.7 (6.7)

13.4 (9.7)

0.594^a

Self-reported ethnicity, n (%)

Black

17 (21.0%)

17 (21.5%)

1^b

White

62 (76.5%)

60 (75.9%)

Others

2 (2.5%)

2 (2.6%)

Menopausal status, n (%)

Pre-menopausal

23 (28.4%)

23 (28.8%)

0.476^b

Post-menopausal

53 (65.4%)

47 (60.0%)

Others

5 (6.2%)

9 (11.2%)

Has blood relatives with cancer, n (%)

Yes

43 (53.1%)

44 (55.0%)

1^b

No

34 (42.0%)

33 (42.5%)

NA (4.9%)

NA (2.5%)

Time to diagnosis in years, mean (range)

NA

4.7 (0–11)

Follow-up time from donation year, mean (range)

6.1 (0–14)

NA