Table 1.
Correlation coefficients from univariate linear regression analysis of the plasma urea and predictors. *P < .05, **P < .01, and ***P < .001.
| ICU day 3 | ICU day 4 | ICU day 5 | ICU day 6 | ICU day 7 | |
|---|---|---|---|---|---|
| Urea vs. nitrogen administration | −0.03 | −0.03 | −0.06 | 0.02 | 0.07 |
| Urea vs. fat administration | 0.13 | 0.22** | 0.06 | 0.23** | 0.19* |
| Urea vs. energy administration | 0.06 | 0.21** | −0.10 | 0.22** | 0.19* |
| Urea vs. eGFR | −0.63*** | −0.61*** | −0.59*** | −0.60*** | −0.62*** |
| Urea vs. fluid balance | −0.02 | −0.13 | −0.21* | −0.10 | 0.09 |
| Urea vs. fluid administration | −0.04 | −0.08 | −0.06 | −0.04 | 0.06 |