Table 2. Regression Analyses of CTX versus pQCT Variables in 1130 Participants Aged 15.5 Years (487 Males, 643 Females).
| Outcome | Model 1 | Model 2 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| β | SE | L_CI | U_CI | p Value | β | SE | L_CI | U_CI | p Value | |
| BAc | –0.12 | 0.036 | –0.19 | –0.05 | 1.08 × 10−3 | 0.06 | 0.026 | 0.01 | 0.12 | 1.50 × 10−2 |
| BMCC | –0.22 | 0.038 | –0.30 | –0.15 | <0.001 | –0.03 | 0.028 | –0.09 | 0.02 | 2.48 × 10−1 |
| BMDC | –0.45 | 0.028 | –0.51 | –0.39 | <0.001 | –0.46 | 0.029 | –0.52 | –0.40 | <0.001 |
| BMDC‐adj‐PC | –0.49 | 0.032 | –0.56 | –0.43 | <0.001 | –0.42 | 0.031 | –0.48 | –0.36 | <0.001 |
| CT | –0.24 | 0.040 | –0.32 | −0.16 | <0.001 | –0.11 | 0.037 | –0.18 | –0.03 | 4.27 × 10−3 |
| EC | 0.20 | 0.045 | 0.12 | 0.29 | <0.001 | 0.29 | 0.043 | 0.20 | 0.37 | <0.001 |
| EC‐adj‐PC | 0.28 | 0.045 | 0.20 | 0.37 | <0.001 | 0.22 | 0.045 | 0.13 | 0.31 | <0.001 |
| PC | 0.02 | 0.038 | –0.05 | 0.09 | 6.07 × 10−1 | 0.19 | 0.029 | 0.13 | 0.24 | <0.001 |
| SSI | –0.10 | 0.038 | –0.18 | –0.03 | 8.51 × 10−3 | 0.09 | 0.027 | 0.03 | 0.14 | 1.32 × 10−3 |
Model 1 = adjustment for age, gender, whether the individual attended the clinic in the morning or afternoon, and Tanner stage. Model 2 = Model 1 in addition to lean mass, fat mass, and height.
SE = standard error; β = SD change in outcome per SD increase in CTX; L_CI = lower 95% confidence estimate of β; U_CI = upper 95% confidence estimate of β; p = strength of evidence against the null hypothesis of no association between the outcome and exposure variable; BAC = cortical bone area; BMCC = cortical bone mineral content; BMDC = cortical bone mineral density; PC = periosteal circumference; CT = cortical thickness; EC = endosteal circumference; BMDC‐adj‐PC = cortical bone mineral content adjusted for periosteal circumference; EC‐adj‐PC = endosteal circumference adjusted for periosteal circumference; SSI = strength strain index.