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. 2022 Jan 19;8:13. doi: 10.1038/s41523-021-00378-7

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%)