Table 3.
T-test for difference between scanners presented as p-value (95%-confidence intervals of the difference)
| HR-pQCT-HR(61µm) | HR-pQCT-LR(82µm) | ||
|---|---|---|---|
| Average measures | BVTV | p<0.0001(-0.19;-0.12) | p<0.0001(-0.28;-0.2) |
| Tb.Th | p<0.0001(-0.18;-0.16) | p<0.0001(-0.3;-0.27) | |
| Tb.Sc | p=0.205(-0.36;0.08) | p=0.0998(-0.4;0.04) | |
| Tb.Sp | p=0.9332(-0.18;0.17) | p=0.604(-0.26;0.15) | |
| Tb.Nd | p<0.0001(2.6;3.88) | p<0.0001(3.65;4.84) | |
| Tb.Tm | p=0.1555(0;0.02) | p=0.017(0;0.02) | |
| Dispersion measures | s(Tb.Th) | p<0.0001(-0.07;-0.04) | p<0.0001(-0.13;-0.09) |
| s(Tb.Sc) | p=0.1019(-0.56;0.05) | p=0.1092(-0.54;0.06) | |
| s(Tb.Sp) | p=0.1245(-0.37;0.05) | p=0.0987(-0.44;0.04) |
Bold figures represent data with p<0.05
HR-pQCT High Resolution peripheral Quantitative Computed Tomography, BVTV Total bone volume, Tb.Th Trabecular thickness, Tb.Sc Trabecular spacing, Tb.Sp Trabecular separation, Tb.Nd Trabecular nodes, Tb.Tm Trabecular termini, s(Tb.Th), s(Tb.Sc) and s(Tb.Sp) are the intra-volume standard deviation for Tb.Th, Tb.Sc and Tb.Sp, respectively