Performance of glomerular filtration rate estimating equations in HIV-positive and HIV-negative participants.

CI, confidence interval; eGFRcr, eGFRcys, and eGFRcr-cys are glomerular filtration rates estimated by CKD-EPI equations using plasma creatinine, cystatin C, and both biomarkers, respectively; P25 and P75, 25th and 75th percentiles, respectively.
aComparisons of a single equation between the HIV-positive and HIV-negative groups. P values in bold font indicate difference is statistically significant accounting for multiple comparisons (see text).
bAccuracy defined as percentage of estimated GFR values within 30% of measured GFR.
cComparisons of a different equations within the HIV-positive or HIV-negative group. P values in bold font indicate difference is statistically significant accounting for multiple comparisons (see text).
dBias defined as difference between estimated GFR and measured GFR (mL/min/1.73 m2).
ePrecision defined as interquartile range of bias.