Multiple Versus Single and Other Estimates of Baseline Proteinuria Status as Predictors of Adverse Outcomes in the General Population

Rates of adverse outcomes related to multiple baseline proteinuria/albuminuria measurements were similar, independent of the measure of baseline proteinuria that was used to combine results. In contrast, discarding follow-up measurements and relying on only the first measurement led to lower estimates of absolute and relative risk for each proteinuria category.