Table 2 Variable measurements at baseline and follow-up measurements
Variable | baseline measurement (g/cm2) | follow-up measurement (g/cm2) | P-Value | Power (sample size required for 80% power) |
|---|---|---|---|---|
Total sample (n = 83) | ||||
Mean (SD) | Mean (SD) | |||
Femoral neck BMDa | 0.749 (0.151) | 0.737 (0.144) | 0.009 | 0.76 (93) |
Lumbar spine BMD | 0.856 (0.168) | 0.861 (0.173) | 0.393 | 0.14 (868) |
Total hip BMD | 0.874 (0.162) | 0.868 (0.159) | 0.066 | 0.45 (191) |
β-CTxb | 0.726 (0.561) | 0.597 (0.393) | 0.117 | 0.35 (192) |
Osteocalcin | 10.15 (10.25) | 18.41 (16.05) | 0.001 | 0.98 (32) |
TBSc | 1.319 (0.091) | 1.314 (0.084) | 0.426 | 0.12 (993) |
Normal BMD (n = 43) | ||||
Femoral neck BMD | 0.830 (0.134) | 0.812 (0.127) | 0.002 | 0.90 (33) |
Lumbar spine BMD | 0.969 (0.134) | 0.971 (0.141) | 0.712 | 0.07 (2335) |
Total hip BMD | 0.957 (0.139) | 0.949 (0.138) | 0.048 | 0.51 (84) |
β-CTx | 0.610 (0.329) | 0.522 (0.261) | 0.217 | 0.23 (150) |
Osteocalcin | 7.200 (5.534) | 17.518 (15.263) | 0.001 | 0.98 (16) |
TBS | 1.347 (0.080) | 1.331 (0.081) | 0.105 | 0.37 (119) |
Used low BMD treatment (n = 28) | ||||
Femoral neck BMD | 0.656 (0.125) | 0.648 (0.119) | 0.371 | 0.14 (268) |
Lumbar spine BMD | 0.740 (0.120) | 0.750 (0.132) | 0.344 | 0.15 (240) |
Total hip BMD | 0.786 (0.139) | 0.781 (0.135) | 0.560 | 0.09 (634) |
β-CTx | 0.888 (0.767) | 0.662 (0.514) | 0.236 | 0.21 (130) |
Osteocalcin | 12.938 (11.358) | 16.273 (13.833) | 0.392 | 0.13 (250) |
TBS | 1.282 (0.079) | 1.278 (0.072) | 0.743 | 0.06 (2008) |
Needed low BMD treatment but didn’t use (n = 12) | ||||
Femoral neck BMD | 0.675 (0.093) | 0.676 (0.109) | 0.943 | 0.05 (17770) |
Lumbar spine BMD | 0.743 (0.091) | 0.743 (0.105) | 1.000 | --- |
Total hip BMD | 0.787 (0.137) | 0.781 (0.133) | 0.586 | 0.08 (302) |
β-CTx | 0.671 (0.435) | 0.694 (0.385) | 0.859 | 0.05 (1590) |
Osteocalcin | 13.243 (17.981) | 29.517 (23.478) | 0.005 | 0.94 (6) |
TBS | 1.313 (0.122) | 1.340 (0.096) | 0.151 | 0.29 0.80 |