Table 1 Overview of the study timeline and measures
Time points | Study period | |||||
|---|---|---|---|---|---|---|
Enrolment | Allocation | Re-assessment | Weekly intervention (22 sessions) | Close-out | ||
January to February 2020 | March 2020 | September 2020 | September 2020 Session 1 | March 2021 Session 22 | May 2021 | |
Enrollment: | ||||||
Eligibility screen | X | |||||
Informed consent | X | |||||
Allocation | X | |||||
Intervention: | ||||||
IY-ASLD® group | X | X | X | X | X | X |
TAU group | X | X | X | X | ||
Assessments: | ||||||
Baseline variables: | ||||||
Sociodemographic variables: Hollingdale’s Index of Social Position [39] | X | |||||
The Modified Checklist for Autism in Toddlers-Revised (M-CHAT-R) [40] | X | |||||
Social Communication Questionnaire (SCQ) [41] | X | |||||
Vineland Adaptive Behavior Scale-III (parent/caregiver report form) [43] | X | |||||
Developmental Profile-3 (DP-3) [38] | X | |||||
Outcome variables: | ||||||
Parent Stress Inventory-Short Form (PSI-SF) [33] | X | X | X | |||
Beck Depression Inventory (BDI) [46] | X | X | X | |||
Alabama Parenting Questionnaire-Preschool version (APQ-Pr) [47] | X | X | ||||
Autism-Specific Five Minute Speech Sample (AS-FMFSS) [48] | X | X | ||||
Child Behavior Checklist (CBCL 1.5-5) [50] | X | X | ||||
ASD-P Parent Strategies Questionnaire [45] | X | X | ||||
Autism Program Parent Final Satisfaction Questionnaire [45] | X | X | ||||
Autism Program Parent Weekly Evaluation [45] | X | X | ||||