In the aforementioned article, the figures have been incorrectly inverted. The correct figures and their corresponding captions are as follows:
![](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20191207133736701-0292:S2045796019000337:S2045796019000337_fig1g.gif?pub-status=live)
Fig. 1. Receiver operating characteristic curves in each each cohort plotting Sensitivity and 1-Specificity for the predicted probabilities generated by the risk calculator against adult ADHD as the classificatory variable.
![](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20191207133736701-0292:S2045796019000337:S2045796019000337_fig2g.gif?pub-status=live)
Fig. 2. Calibration curves in each cohort plotting the predicted probabilities generated by the risk calculator (x-axis) against observed adult ADHD frequency (y-axis). Dashed diagonal line represents perfect calibration.
The publisher regrets this error.