Table 4.
Factors associated with single-nephron glomerular filtration rate by multiple linear regression analysis.
| Univariable | Multivariable Model 1 | Multivariable Model 2 | ||||
|---|---|---|---|---|---|---|
| SNGFRCr (nL/min) | SNGFRCr (nL/min) | SNGFRCr (nL/min) | ||||
| β Coefficient | p Value | β Coefficient | p Value | β Coefficient | p Value | |
| PI/IBW (g/kg/day) | 0.42 | 0.005 | 0.43 | 0.004 | 0.49 | 0.01 |
| Height (m) | 0.08 | 0.62 | 0.08 | 0.60 | 0.15 | 0.37 |
| BMI (kg/m2) | 0.10 | 0.51 | 0.14 | 0.33 | 0.16 | 0.38 |
| MAP (mmHg) | 0.03 | 0.83 | - | - | −0.04 | 0.80 |
| Alb (mg/dL) | 0.03 | 0.87 | - | - | −0.10 | 0.55 |
| SI (g/day) | 0.19 | 0.23 | - | - | −0.14 | 0.51 |
In model 2, one subject was excluded because of missing data on mean arterial pressure (MAP). Abbreviations: Alb, albumin; BMI, body mass index; MAP, mean arterial pressure; PI/IBW, estimated protein intake/ideal body weight; SI, sodium intake; SNGFRCr, single-nephron glomerular filtration rate.