Table A1.

Labeling Agreement of Website/Screen Features

Website/Screen Feature	Labeler Agreement (Kappa)
Does this page contain a screen?	0.74
Does this page link to a screen?	0.53
Does the screen provide a suggestive diagnosis?	0.78
Is a message provided with the diagnosis?	0.71
Does the page contain internal digital treatment?	0.49
Are there referrals to facilitate in-person care?	0.52
Are there referrals to digital treatment (other than crisis referral)?	0.32
Does referral to digital treatment involve a human?	0.51
Is there a referral to crisis services?	0.56