Table 1.
Cortical BMDD parameters from n = 73 premenopausal healthy women
| Total cortex (pooled into one compartment Ct.TOT) |
Arithmetic mean of two cortices (Ct.) |
Absolute difference between C1 and C2 | |
|---|---|---|---|
| Ct.CaMean [wt%] |
22.07 (0.56) | 22.10 (0.55) | 0.66 [0.27; 0.99] |
| Ct.CaPeak [wt%] |
22.84 (0.55) | 22.86 (0.53) | 0.69 [0.35; 0.91] |
| Ct. CaWidth [Δwt%] |
3.81 [3.64; 4.33] | 3.73 [3.53; 4.27] | 0.35 [0.17; 0.52] |
| Ct.CaLow [% B.Ar] |
5.49 (1.86) | 5.47 (1.85) | 1.54 [0.58; 2.61] |
| Ct.CaHigh [% B.Ar] |
5.74 [3.64; 8.56] | 5.72 [3.91; 8.49] | 2.98 [1.28; 6.12] |
Data are mean (SD) or median [25 %; 75 %]
CaMean the weighted mean Ca-concentration of the bone area, CaPeak the peak position of the histogram, indicating the most frequently measured calcium concentration, CaWidth the full width at half maximum of the distribution, describing the variation in mineralization density, CaLow the percentage of lowly mineralized bone (<17.68 wt% Ca—the calcium concentration at the 5th percentile of our reference BMDD for cancellous bone of adults [12]); CaHigh the percentage of highly mineralized bone areas (>25.30 wt% Ca—the calcium concentration the at the 95th percentile the reference BMDD for cancellous bone of adults [12])