Table 2.
Correlation and multiple linear regression for renal cortical volume in the derivation group (N = 80).
| Univariate | Multivariate model 0 | Multivariate model 1 | Multivariate model 2 | Multivariate model 3 | Multivariate model 4 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| β coefficient (95%CI) | P value | β coefficient (95%CI) | P value | VIF | β coefficient (95%CI) | P value | VIF | β coefficient (95%CI) | P value | VIF | β coefficient (95%CI) | P value | VIF | β coefficient (95%CI) | P value | VIF | |
| Age, year | −0.417 (−0.827, −0.008) | 0.046 | — | — | — | — | — | — | −0.209 (−0.378, −0.039) | 0.016 | 1.14 | — | — | — | −0.118 (−0.291, 0.055) | 0.180 | 1.25 |
| Gender, male | 12.5 (2.0, 22.9) | 0.020 | — | — | — | — | — | — | 4.78 (−2.49, 12.05) | 0.195 | 3.16 | — | — | — | 1.29 (−4.68, 7.26) | 0.67 | 2.24 |
| log Cr, 10 log(mg/dL) | −49.7 (−79.5, −20.0) | 0.0013 | — | — | — | — | — | — | −13.2 (−30.6, 4.2) | 0.135 | 2.10 | — | — | — | −15.8 (−33.0, 1.4) | 0.071 | 2.15 |
| eGFR, mL/min/1.73 m2 | 0.656 (0.406, 0.905) | <0.001 | — | — | — | 0.152 (0.026, 0.278) | 0.019 | 1.29 | — | — | — | 0.168 (0.048, 0.288) | 0.007 | 1.28 | — | — | — |
| Body height, cm | 1.06 (0.41, 1.71) | 0.0016 | — | — | — | 0.076 (−0.210, 0.363) | 0.595 | 1.18 | −0.136 (−0.543, 0.270) | 0.51 | 2.43 | — | — | — | — | — | — |
| Body weight, kg | 0.98 (0.61, 1.35) | <0.001 | — | — | — | — | — | — | — | — | — | 0.250 (0.073, 0.428) | 0.006 | 1.29 | 0.232 (0.009, 0.455) | 0.042 | 1.98 |
| Diabetes mellitus | 1.8 (−12.7, 16.4) | 0.803 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Hypertension | 4.3 (−6.4, 15.0) | 0.427 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| PV plain, cm3 | 0.714 (0.645, 0.782) | <0.001 | 0.714 (0.645, 0.782) | <0.001 | — | 0.665 (0.584, 0.747) | <0.001 | 1.49 | 0.671 (0.585, 0.756) | <0.001 | 1.67 | 0.621 (0.540, 0.702) | <0.001 | 1.61 | 0.630 (0.541, 0.719) | <0.001 | 1.9 |
| Adjusted R2 = 0.845, AIC = 361 | Adjusted R2 = 0.852, AIC = 361 | Adjusted R2 = 0.856, AIC = 359 | Adjusted R2 = 0.866, AIC = 352 | Adjusted R2 = 0.875, AIC = 354 | |||||||||||||
Footnote: Common logarithm was used for logarithmic transformation. Abbreviations: AIC, Akaike information criteria; CI, confidence interval; Cr, creatinine; eGFR, estimated glomerular filtration rate; PV, parenchymal volume, VIF, variance inflation factor.