Results of univariate analysis of the quantitative X-ray outputs as predictors of dual-energy X-ray absorptiometry normal/non-normal outcome
| Mean normal (SD) | Mean non-normal (SD) | P value | AUC (CI) | |
| Bone thickness | 1.75 (0.403) | 2.25 (0.503) | <0.001 | 0.810 (0.741 to 0.878) |
| Intensity | 111.9 (28.3) | 87.7 (26.5) | <0.001 | 0.753 (0.673 to 0.833) |
| Thickness | 18.3 (2.15) | 19.8 (2.40) | <0.001 | 0.674 (0.587 to 0.761) |
| Alloy | 0.0969 (0.0231) | 0.115 (0.0275) | <0.001 | 0.689 (0.602 to 0.775) |
| Gender | 78.6% female | 77.6% female | 1 | 0.505 (0.437 to 0.573) |
| aBMD | 0.770 (0.0738) | 1.00 (0.120) | <0.001 | 1 (1 to 1) |
aBMD, areal bone mineral density; AUC, area under the ROC curve.