Evaluating an Online Adjunctive Support Following Intensive Services (OASIS) Strategy for Youth With Selective Mutism

Study Summary

This study sought to evaluate an innovative post-acute continuation/transition planning treatment strategy that leveraged an in-person intensive treatment followed by online, videoconferencing-based "booster" sessions for youth with selective mutism (SM). Twenty children between the ages of 4 and 10 and their caregivers were scheduled to participate in an in-person intensive group behavioral treatment (IGBT) for SM and subsequently randomized to receive either (a) six, biweekly, hour-long, videoconferencing-delivered booster sessions or (b) no additional treatment for 12 weeks. Due to COVID-19-related physical distancing restrictions, the study team was unable to provide in-person services. Thus, the clinical trial was converted to an open-trial design focused on evaluating remote treatment options (i.e., remotely delivered caregiver training sessions and/or a remotely delivered IGBT) for these families. All families retained in the study have or will participate(d) in assessments at the following time points: Intake (i.e., 4-5 months prior to the remote IGBT); Baseline (i.e., 1 month prior to the IGBT), Post-IGBT (i.e., 2 weeks following the IGBT), and School Year Follow Up (i.e., 16 weeks following the IGBT).

Primary Outcome

The CGI-I Scale (Guy \& Bonato, 1970) is a widely used global improvement measure; improvement is rated on a 7-point scale ranging from 1 (very much improved) to 7 (very much worse). Independent evaluators masked to family participation/progress during the intensive group behavioral treatment (IGBT) will complete the CGI-I rating. "Treatment Response" is defined as an independent evaluator rated CGI-I rating of 1 or 2 (ratings \>/= 3 represent "Treatment Nonresponse").

Interventions

• BEHAVIORAL Remote Caregiver Training
• BEHAVIORAL Remote Intensive Group Behavioral Treatment (IGBT)