Table 3 Patient Characteristics: Characteristics of patients included in analysis set for this study.
BBD case (N = 87) | BBD control (N = 87) | Total (N = 174) | |
|---|---|---|---|
Age | |||
Median | 52 | 52 | 52 |
Range | (35–74) | (35–74) | (35–74) |
Age category, n (%) | |||
<45 years | 19 (21.8%) | 19 (21.8%) | 38 (21.8%) |
45–55 years | 33 (37.9%) | 33 (37.9%) | 66 (37.9%) |
>55 years | 35 (40.2%) | 35 (40.2%) | 70 (40.2%) |
BBD histology n (%) | |||
Non-proliferative | 26 (29.9%) | 40 (46.0%) | 66 (37.9%) |
Proliferative disease without atypia | 42 (48.3%) | 37 (42.5%) | 79 (45.4%) |
Atypical hyperplasia | 19 (21.8%) | 10 (11.5%) | 29 (16.7%) |
Age-related lobular involution, n (%) | |||
Involution data missing | 7 | 2 | 9 |
None | 22 (27.5%) | 15 (17.6%) | 37 (22.4%) |
Partial | 44 (55.0%) | 39 (45.9%) | 83 (50.3%) |
Complete | 14 (17.5%) | 31 (36.5%) | 45 (27.3%) |
