Table 3 Potential determinants for breast density and tumour detection
From: Breast density and mode of detection in relation to breast cancer specific survival: a cohort study
Factor | Category | Breast density | |||
|---|---|---|---|---|---|
Fatty (n = 93) | Moderate (n = 312) | Dense (n = 214) | |||
Number (column percent)Mean, SD in italics | p-value** | ||||
Age at baseline | Years | 60.1 (7.1) | 56.8 (6.8) | 55.1 (6.7) | <0.0001 |
Age at diagnosis | Years | 67.4 (7.3) | 65.2 (7.1) | 62.0 (7.6) | < 0.0001 |
HRT at diagnosis | No | 25 (26.9) | 126 (40.4) | 46 (21.5) | <0.0001 |
Yes | 10 (10.8) | 84 (26.9) | 106 (49.5) | ||
Unknown | 58 (62.4) | 102 (32.6) | 62 (29.0) | ||
Menopausal status at diagnosis | Premenopausal | 3 (3.2) | 18 (5.8) | 32 (15.0) | 0.001 |
Postmenopausal | 89 (95.7) | 287 (92.0) | 177 (82.7) | ||
Unknown | 1 (1.1) | 7 (2.2) | 5 (2.3) | ||
BMI at baseline | <20 | 0 (0.0) | 10 (3.2) | 17 (7.9) | <0.0001 |
20- < 25 | 29 (31.2) | 135 (43.3) | 129 (60.3) | ||
25- < 30 | 27 (29.0) | 123 (39.4) | 53 (24.8) | ||
≥30 | 37 (39.8) | 44 (14.1) | 15 (7.0) | ||
Detection mode (three categories) | Non-symptomatic | 50 (53.8) | 183 (58.7) | 117 (54.7) | 0.333 |
Interval | 10 (10.8) | 43 (13.8) | 34 (15.9) | ||
Symptomatic | 31 (33.3) | 83 (26.6) | 63 (29.4) | ||
Unknown* | 2 (2.2) | 3 (1.0) | 0 (0.0) | ||
Detection mode (symptomatic including interval cancers) | Non-symptomatic | 50 (53.8) | 183 (58.7) | 117 (54.7) | 0.559 |
Symptomatic | 43 (46.2) | 129 (41.3) | 97 (45.3) | ||