Table 1.

Dataset breakdown by age group and condition for each of the sources of training data and for the clinical validation sample. Machine learning model training was stratified by age group. Clinical validation 2016 and 2017 samples are used together to evaluate performance of the parent and video modules in this paper, while the clinician module was only available for the clinical 2017 dataset.

Age (years)	Condition	Number of samples
		Parent/Clinician module training	Video module training	Clinical validation 2016	Clinical validation 2017
<4	Autism	414	1445	75	91
<4	Not autism	207	539	20	30
≥4	Autism	1885	1865	46	60
≥4	Not autism	180	410	21	32