Correction to: Nature Medicine https://doi.org/10.1038/s41591-022-01822-2, published online 26 May 2022.

In the version of this article initially published, there were composition errors in the second column of Table 4, where for each age subgroup, the second set of “P-tau217” terms now shown for each subgroup were shown as entries for “P-tau181.” The table has been amended in the HTML and PDF versions of the article.