20 October 2023

We have corrected errors in Table 3 and Table 4.

The previous version of Table 3 had incorrect column titles for the qualifications. The title “ONC or National Level BTEC” was erroneously split into “ONC or National Level” and “BTEC”, with all columns to the right then being mislabelled, and the label “No formal qualifications” being missed out. The column titles have been updated.

Table 4 had an incorrect confidence interval for one of the estimates, which has now been corrected.

This happened because of processing error.