Nature Reviews Nephrology 10, 363–364 (2014)

In the original published version of this article, a description of the association between urinary sodium excretion and kidney failure in patients with 24 h urinary sodium excretion <3 g per day was incorrect. The description has been corrected to read “Although no association was found between 24 h urinary sodium excretion and kidney failure in patients with urinary sodium excretion >3 g per day, when 24 h urinary sodium excretion was <3g per day, a 1g per day higher urine sodium was associated with a 72% increased risk of kidney failure in patients with baseline proteinuria <1g per day, and a 39% lower risk of kidney failure in patients with baseline proteinuria ≥1g per day.” The error has been corrected in the HTML and PDF versions of the article.