Table 4.
Mean and 95% confidence interval (95% CI), fibroglandular volume percent (FGV%) and mammographic density percent (MD%) for 85 subjects at baseline
| N | FGV% (95% CI) | Age adjusted FGV% (95% CI) | MD% (95% CI) | Age adjusted MD% (95% CI) | |
|---|---|---|---|---|---|
| Age | |||||
| <50 | 17 | 12.05 (8.49, 16.24) | 23.97 (15.86, 33.74) | ||
| 50-59 | 34 | 5.88 (4.12, 7.95) | 18.36 (13.24, 24.30) | ||
| ≥60 | 34 | 3.64 (2,29, 5.30) | 11.35 (7.42, 16.12) | ||
| P trend | <0.0001 | 0.021 | |||
| Menopausal status | |||||
| Premenopausal | 19 | 12.65 (9.24, 16.59) | 10.80 (7.36, 14.89) | 25.41 (17.44, 34.89) | 22.31 (14.11, 32.37) |
| Postmenopausal | 66 | 4.43 (3.33, 5.66) | 5.30 (3.86, 6.98) | 14.08 (10.81, 17.78) | 15.58 (11.39, 20.43) |
| P value | <0.001 | 0.011 | 0.012 | 0.23 | |
| Body mass index (kg/m2) | |||||
| <25 | 35 | 8.99 (6.75, 11.54) | 9.82 (7.67, 12.23) | 25.17 (19.63, 31.41) | 26.26 (20.73, 32.44) |
| 25-<30 | 24 | 5.11 (3.16, 7.52) | 5.77 (3.85, 8.07) | 15.86 (10.72, 22.01) | 16.60 (11.45, 22.70) |
| ≥30 | 26 | 3.29 (1.83, 5.19) | 4.14 (2.57, 6.07) | 7.73 (4.41, 11.98) | 8.64 (5.14, 13.06) |
| P trend | 0.001 | 0.0002 | <0.0001 | <0.0001 |