CORRECTION
Weaver RG, James MT, Ravani P, Weaver CG, Lamb EJ, Tonelli M, Manns BJ, Quinn RR, Jun M, Hemmelgarn BR: Estimating Urine Albumin-to-Creatinine Ratio from Protein-to-Creatinine Ratio: Development of Equations using Same-Day Measurements. J Am Soc Nephrol 31: 591–601, 2020.
After publication of the above-noted manuscript, it came to our attention that there was a typographic error in Table 3, which provides the equations to estimate the log of the albumin-creatinine ratio (log[ACR]) from the protein-creatinine ratio (PCR). In the equation for the 25th percentile of log(ACR) for a PCR ≥1000 mg/g, the first coefficient should be 0.0867, rather than –0.0867. The correct version of Table 3 is shown below.
Table 3.
Equations to estimate the median and 25th and 75th percentiles of ACR from a PCR measurement, based on quantile regression models for log(ACR) containing only the linear spline terms for log(PCR)
| Range of PCR (mg/g) | Equation to Estimate Median log(ACR) | Equation to Estimate 25th Percentile log(ACR) | Equation to Estimate 75th Percentile log(ACR) |
|---|---|---|---|
| PCR <40 | 0.9518+0.1264×log(PCR) | 0.5528+0.1297×log(PCR) | 1.4520+0.1074×log(PCR) |
| PCR 40 to <60 | −1.2568+0.7251×log(PCR) | −0.1416+0.3179×log(PCR) | −3.7193+1.5092×log(PCR) |
| PCR 60 to <250 | −6.7837+2.0751×log(PCR) | −6.2467+1.8092×log(PCR) | −4.9571+1.8116×log(PCR) |
| PCR 250 to <1000 | −2.9649+1.3834×log(PCR) | −7.1833+1.9788×log(PCR) | −1.4477+1.1760×log(PCR) |
| PCR ≥1000 | −0.0239+0.9577×log(PCR) | 0.0867+0.9264×log(PCR) | −0.1902+0.9939×log(PCR) |
Log refers to the natural logarithm, so ACR=exp(log[ACR])=2.71828log(ACR). Median-predicted ACR=exp(median of predicted log[ACR]). ACR and PCR are in mg/g.
The authors sincerely apologize for any inconvenience this may have caused.
Footnotes
Published online ahead of print. Publication date available at www.jasn.org.