Table 5.
Precision of Trabecular Bone Score (TBS) and least significant change (LSC) for 95% confidence by age.
| Age | Variable | N | RMSEa | %CV | LSCa |
|---|---|---|---|---|---|
| Preteen 6–9 y | TBS | 49 | 0.0418 | 3.43 | 0.116 |
| BMAD (g/cm3) | 51 | 0.0032 | 1.74 | 0.009 | |
| aBMD (g/cm2)b | 51 | 0.0062 | 1.10 | 0.017 | |
| Early teens 10–13 y | TBS | 54 | 0.0395 | 3.11 | 0.109 |
| BMAD (g/cm3) | 54 | 0.0026 | 1.25 | 0.007 | |
| aBMD (g/cm2)b | 54 | 0.0067 | 0.93 | 0.018 | |
| Late teens 14–16 y | TBS | 51 | 0.0285 | 2.05 | 0.079 |
| BMAD (g/cm3) | 50 | 0.0017 | 0.69 | 0.005 | |
| aBMD (g/cm2)b | 50 | 0.0060 | 0.64 | 0.017 | |
| Overall 6–16 y | TBS | 154 | 0.0370 | 2.87 | 0.102 |
| BMAD (g/cm3) | 155 | 0.0026 | 1.22 | 0.007 | |
| aBMD (g/cm2)b | 155 | 0.0064 | 0.85 | 0.018 |
a
Calculated from Root Mean Square Error (RMSE) × 2.77
b
Values for aBMD from Shepherd et al.(24)