(b).

Excluded from in-depth review	Dates of paper(s)	Country developed	Ages (mos)	Reason for exclusion
Pervasive Developmental Disorders Screening Test (PDDST-II)		US		No peer-reviewed articles (ROC or otherwise)
Early Screen for Autism Traits (ESAT)		Netherlands	14-15	No prospective studies done in age range; two-stage screening
Checklist for Early Signs of Developmental Disorders (CESDD)	2010 2012	Netherlands	3–40	Two-stage screening
Infant-Toddler Checklist (ITC) (2 of 3 studies)	2004 2008	US	8–24	Studies involved two-stage screening

^†The ITC was evaluated for ASD prediction and the authors concluded that it functions best as a broadband screener, identifying children at risk for disabilities, a proportion of whom will be diagnosed with ASD.

^∗This paper was reviewed in detail for research methods because it was an ROC study.