Hi Xuhong,

Thank you for your interested in the NKI TRT dataset. Sorry that it takes a bit long for us answer your question. I listed your questions and answered them below:

> First, this diagnosic information was just self-reported from subjects or assessed from clinical diagnosis by some experienced psychiatrists?

The diagnose information are collected using structured clinical interview for DSM Disorder (SCID) by trained professionals.

> Second, what's the classification numbers mean, such as 296.35, 296.25.

The numbers are DSM-IV codes.

> Third, can we exclud the subjects with history of illness just according to the current/historical diagonisic information provided in the table?

This  is your call. you sure can if you need to or want to.

Let me know if you have further questions.

Yang