Which Is a Better Predictor of GFR Decline: 24-h Urine Protein or 24-h Protein-Creatinine Ratio? An Exploration of the MDRD Study Data.

Although in the six different pairs of non-nested models considered in Table 3C , model R 2 in model 3 (24 PCR) and model 3 (24 P) are distinguishable except for subgroup 24 P<1 g, the Vuong test showed a significant superiority of model 3 (24 PCR) over model 3 (24 P) only for the sub-cohort (urine creatinine (≤800 mg, ≥1,200 mg) but not in the subgroups of proteinuria where the p -value was close to being significant ( Table 3C ).

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