Table 2.
Predicted percentage changes in BMD after SG
| 6-month % change | 12-month % change | p | |
|---|---|---|---|
| DXA (n = 49) | |||
| Total hip aBMD (g/cm2) | −5.4 [−6.4,−4.3] | −8.0 [−9.1,−6.7] | <0.01 |
| Femoral neck aBMD (g/cm2) | −3.4 [−4.2,−2.5] | −6.7 [−8.3,−5.2] | <0.01 |
| Lumbar spine aBMD (g/cm2) | −0.7 [−1.4,−0.1] | −1.4 [−2.6,−0.3] | 0.03 |
| Distal 1/3 radius aBMD (g/cm2) | 0.3 [−0.1,0.7] | 0.7 [−0.1,1.6] | 0.11 |
| QCT (n = 38) | |||
| Lumbar spine vBMD (g/cm3) | −1.6 [−2.9,−0.1] | −3.1 [−6.1,0.1] | 0.07 |
| HRpQCT (n = 37) | |||
| Radius total vBMD (g/cm3) | −0.4 [−1.1,0.2] | −0.8 [−2.2,0.4] | 0.22 |
| Radius trabecular vBMD (g/cm3) | −0.9 [−1.6,−0.2] | −1.9 [−3.3,−0.5] | 0.01 |
| Radius cortical vBMD (g/cm3) | 0.2 [−0.1,0.4] | 0.4 [−0.1,0.9] | 0.17 |
| Tibia total vBMD (g/cm3) | −1.6 [−2.2,−1.0] | −3.1 [−4.2,−1.9] | <0.01 |
| Tibia trabecular vBMD (g/cm3) | −1.1 [−1.7,−0.4] | −2.1 [−3.3,−0.8] | <0.01 |
| Tibia cortical vBMD (g/cm3) | 0.0 [−0.6,0.7] | −1.0 [−2.2,0.1] | 0.20 |
Values are model predictions ± 95%CI
P-values, which compare to no change, were calculated with mixed effect models with repeated measures with random participant intercept and slope and fixed effect of time.
Abbreviations: DXA, dual-energy X-ray absorptiometry; aBMD, areal bone mineral density; QCT, quantitative computed tomography; vBMD, volumetric bone mineral density; HRpQCT, high-resolution peripheral quantitative computed tomography.