Table 1.

Best estimate (BE) diagnostic criteria

Diagnosis	Criteria
TS	At least 2 motor tics and 1 phonic tic endorsed, tics have occurred for at least 1 year, and age of onset prior to 18
Tic disorder NOS	At least 2 motor tics and 1 phonic tic endorsed, tics have occurred for at least 1 year, age of onset after 18
OCD	Symptoms endorsed occur for: ≥ 1 hour AND (distress ≥ mild OR interference ≥ mild) OR < 1 hour AND (distress ≥ moderate OR interference ≥ moderate)
OCD subclinical	Symptoms endorsed occur for < 1 hour or distress = mild AND/OR interference = mild
ADHD	6 inattentive OR 6 hyperactive symptoms endorsed Age onset before 7 Impairment present in at least 3 settings
ADHD NOS	Meets symptom & impairment criteria, age of onset 7–13yo OR Current symptoms don’t meet full criteria and unclear whether criteria have previously been met