Table 5.
Percentage and absolute dense breast volume differences with difference in mutually adjusted anthropometric and body composition measures
| Percentage dense breast volumea | Absolute dense breast volumea | |||||||
|---|---|---|---|---|---|---|---|---|
| % Diff | 95% CI | P value | R 2b | % Diff | 95% CI | P value | R 2 | |
| Anthropometric measures | ||||||||
| BMI (kg/m2) | -29.1 | -48.2, -3.1 | 0.03 | 0.61 | 13.4 | -19.1, 58.8 | 0.47 | 0.29 |
| Waist circumference (cm) | -28.6 | -49.4, -0.7 | 0.06 | -22.5 | -47.9, 15.2 | 0.21 | ||
| DXA measures | ||||||||
| Total fat (%) | -26.1 | -34.1, -17.3 | < 0.001 | 0.71 | -2.4 | -16.7, 14.3 | 0.76 | 0.30 |
| A:G ratio | -37.2 | -40.3, -34.0 | < 0.001 | -18.5 | -27.8, -7.9 | 0.001 | ||
Percentage difference in percentage and absolute dense breast volume with a one-standard-deviation difference in mutually adjusted anthropometric and dual-energy X-ray absorptiometry (DXA) measures. Results also are interpretable as the excess relative ratio. To convert to the relative ratio (RRatio), use the formula: RRatio = (%Diff + 100)/100. A:G, android:gynoid fat ratio; BMI, body mass index; CI, confidence interval. aEstimates from two linear mixed-effects models including clinic as a random effect and anthropometric and body composition variables, race, education (attended college), smoking status, duration of hormone use, parity, and BMI z-score at 8 to 10 years old as fixed effects. bProportion of variance explained by model.