Background
Methods
Study design and procedure
DXA data collection
Statistical Analysis
Results
Mothers | Daughters | ||
---|---|---|---|
N | 101 | 113 | |
Age (years) | 47.7 ± 4.8 | 13.9 ± 1.7 | |
Weight (kg) | 70.8 ± 17.0 | 54.1 ± 14.3 | |
Height (cm) | 160.3 ± 7.3 | 157.4 ± 8.4 | |
BMI (kg/m2) | 27.5 ± 6.0 | NA | |
BMI Z-score | NA | 0.41 ± 1.02 | |
% total body fatb
| 39.7 ± 7.8 | 30.1 ± 9.1 | |
Age at menarche (years)c
| 12.5 ± 1.6 | 11.7 ± 1.1 | |
Number of children | 2.5 ± 1.0 | --- | |
Ethnicity, primary (N) | Caucasian | 32 | 35 |
Asian | 46 | 41 | |
Other | 23 | 37 | |
Ethnic backgrounds reported, all or parta
| Caucasian | 49 | 77 |
Asian | 64 | 83 | |
Other | 33 | 53 | |
Tanner stage for breast development (N) | 1-2 | 17 | |
3 | 38 | ||
4-5 | 58 |
DXA measures | Mothers | Daughters | ra
|
pvalue |
---|---|---|---|---|
All mother-daughter pairs | ||||
N | 101b
| 113 | ||
Total area (cm2) | 92.0 ± 38.9 | 43.2 ± 26.4 | 0.30 | <0.01 |
Total volume (cm3) | 820.3 ± 494.1 | 346.7 ± 285.3 | 0.28 | <0.01 |
FGV (cm3) | 272.5 ± 107.6 | 196.4 ± 119.9 | 0.28 | <0.01 |
%FGV | 38.9 ± 14.1 | 64.7 ± 19.4 | 0.01 | 0.96 |
Mothers and daughters in Tanner stages 4&5 only | ||||
N | 54b
| 58 | ||
Total area (cm2) | 101.2 ± 41.4 | 58.7 ± 26.7 | 0.45 | <0.001 |
Total volume (cm3) | 908.5 ± 529.3 | 493.1 ± .317.0 | 0.38 | <0.01 |
FGV (cm3) | 297.7 ± 114.8 | 273.0 ± 111.5 | 0.56 | <0.0001 |
%FGV | 37.9 ± 12.8 | 64.6 ± 20.0 | -0.03 | 0.84 |
Breast volumeb
| FGVb
| %FGVb
| |||||
---|---|---|---|---|---|---|---|
ß |
p
| ß |
p
| ß |
p
| ||
All mother-daughter pairs (N = 112)a
| |||||||
Corresponding Mother's DXA measure | 0.08 | 0.26 | 0.12 | 0.09 | -0.04 | 0.53 | |
Ethnicity (all or part), daughterc
| Caucasian | -0.06 | 0.26 | -0.04 | 0.55 | 0.05 | 0.35 |
Asian | 0.02 | 0.70 | 0.06 | 0.34 | 0.06 | 0.25 | |
Other | 0.08 | 0.12 | 0.09 | 0.10 | 0.01 | 0.83 | |
DXA % total body fat, daughter | 0.51 | <0.0001 | 0.11 | 0.06 | -0.90 | <0.0001 | |
DXA % total body fat, mother | -0.05 | 0.46 | -0.04 | 0.59 | 0.01 | 0.85 | |
Tanner breast (1&2, 3, 4&5)d
| 0.57 | <0.0001 | 0.74 | <0.0001 | 0.23 | <0.0001 | |
Age, daughter (years) | -0.03 | 0.59 | 0.06 | 0.39 | 0.19 | <0.001 | |
Age, mother (years) | 0.10 | 0.05 | 0.11 | 0.05 | -0.04 | 0.44 | |
Adjusted r
2
| 0.74 | 0.69 | 0.78 | ||||
Mothers and daughters in Tanner stages 4&5 only (N = 57)a
| |||||||
Corresponding Mother's DXA measure | 0.30 | 0.02 | 0.58 | <0.0001 | -0.06 | 0.56 | |
Ethnicity (all or part), daughterc
| Caucasian | -0.16 | 0.08 | -0.16 | 0.19 | 0.04 | 0.59 |
Asian | 0.03 | 0.74 | 0.08 | 0.49 | 0.04 | 0.55 | |
Other | 0.10 | 0.26 | 0.17 | 0.14 | 0.01 | 0.96 | |
DXA % total body fat, daughter | 0.73 | <0.0001 | 0.23 | 0.05 | -0.90 | <0.0001 | |
DXA % total body fat, mother | -0.16 | 0.22 | -0.15 | 0.27 | 0.06 | 0.53 | |
Age, daughter (years) | -0.04 | 0.68 | 0.03 | 0.83 | 0.11 | 0.16 | |
Age, mother (years) | 0.14 | 0.16 | 0.25 | 0.06 | -0.04 | 0.59 | |
Adjusted r
2
| 0.61 | 0.34 | 0.77 |