Table 1.
Fitted coefficients of best multivariate linear models to predict the bounding box location and its size defined by the coordinates of one vertex (x1,y1,z1) and the dimensions of the box (transverse, anteroposterior (AP), and craniocaudal (CC)); and to predict the thoracic cage and body AP dimensions at the T9 vertebra level. BMI: body mass index, PI: ponderal index.
| Dependent variable (cm) | Predictive variables and corresponding linear coefficients | Cross-validation measure | Adjusted-R2 | |||||
|---|---|---|---|---|---|---|---|---|
| Intercept (β0) | Age | PI | PI2 | BMI | Weight | |||
| x1 | 1.99E+01 | – | −2.63E+00 | 7.26E−02 | – | – | 3.11 | 0.34 |
| y1 | 5.51E−01 | 7.13E−02 | – | – | 3.72E−01 | – | 1.73 | 0.82 |
| z1 | −5.07E+01 | – | 5.27E+00 | −1.46E−01 | – | – | 7.74 | 0.50 |
| Transverse dimension (|x2− x1|) | −9.02E+00 | – | 2.50E+00 | −6.78E−02 | – | – | 2.79 | 0.39 |
| AP dimension (|y2−y1|) | 4.49E+00 | 7.67E−02 | – | – | 2.51E−01 | – | 2.74 | 0.64 |
| CC dimension (|z2−z1|) | 3.80E+01 | – | − 3.34E+00 | 9.28E−02 | – | – | 4.61 | 0.39 |
| Thoracic cage AP dimension | 1.15E+01 | 4.49E−02 | – | – | 3.23E−01 | – | 2.73 | 0.63 |
| Body AP dimension | 1.02E+01 | 7.10E−02 | – | – | 1.46E−01 | 1.79 | 0.86 | |