Spot Urine Estimations Are Equivalent to 24-Hour Urine Assessments of Urine Protein Excretion for Predicting Clinical Outcomes

Figure 1

Distribution of urine estimation ratios to 24 hr urine measurements. (a-1) UPCR versus 24 hr urine protein excretion. Correlation , 95% CI 0.74–0.83. Bold line: line of identity; fine line: regression line; dotted lines: 95% CI of the regression line. (a-2) Limits of agreement of Log-transformed UPCR and 24 hr urine protein excretion. (b-1) UACR versus 24 hr urine albumin excretion. Correlation , 95% CI 0.82–0.89. Bold line: line of identity; fine line: regression line; dotted lines: 95% CI of the regression line. (b-2) Limits of agreement of Log-transformed UACR and 24 hr urine albumin excretion.