The purpose of this study is to evaluate the feasibility, safety, and preliminary efficacy of integrating targeted dosing of intranasal oxytocin with a social cognitive skills group therapy for school-aged children with autism spectrum disorder (ASD).
The study is a proof-of-concept, combination intervention designed to address individual treatment targets presumed to influence social learning in school-aged children with autism spectrum disorder (ASD). This proposal builds upon prior research on an empirically supported social cognitive skills training curriculum, NETT (Nonverbal communication, Emotion recognition, and Theory of mind Training). NETT is a cognitive-behavioral intervention (CBI) for nonverbal communication, emotion recognition, and theory of mind deficits in youth with ASD. In this two-phase, 3 year, single-blind, contact controlled study, school-aged children with ASD (n=60) will be randomized into a 12-session, parallel group design of Integrated Oxytocin and NETT (ION) or a control social group condition (facilitated play). The study aims to evaluate the safety, tolerability, and efficacy of integrating the neuropeptide, oxytocin (OXT), with the social cognitive curriculum, as well as to identify targets of change and pre-treatment factors predictive of response to ION-ASD. Maintenance of treatment effects will also be assessed 1 month and 3 months post-treatment.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
40
This is an integrated pharmacological-behavioral intervention targeting social cognitive skills for school-aged children with ASD. Four doses of intranasal oxytocin (24 IUs/dose) will be delivered each week before weekly homework and group therapy sessions.
Social cognitive skills training utilize cognitive behavioral strategies such as problem identification, affective education, performance feedback, and weekly homework activities to target impairments in nonverbal synchrony, emotional expression, and interpretation of intent. The NETT curriculum is manualized and anchored in CBI strategies, such as problem identification, affective education, performance feedback, and weekly homework activities. Parent education sessions run concurrently with child groups to help facilitate generalization.
Rush University Medical Center
Chicago, Illinois, United States
Change From Baseline in Social Behavior Impairment (SBI) Composite
The change from baseline in SBI is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. SBI is a composite score based on Soorya et al. (2015) which identified measures that comprise this metric. Scores from the Children's Communication Checklist-2 (CCC-2) Social Relations and Nonverbal Communication subscales and the Griffith Empathy Measure (GEM) were standardized as z-scores using the sample means and standard deviations at baseline. CCC-2 subscale scores and reversed GEM total scores were used so higher z-scores reflect more impairment across measures. The SBI outcome was subsequently derived by averaging the z-scores. At baseline, the sample average SBI z-score equals 0; higher individual scores indicate relatively more impairment in social behavior skills. Larger, negative slopes represent improvement.
Time frame: Baseline and Week 12 (Endpoint)
Rate of Change From Baseline in Social Behavior Impairment (SBI) Composite
The change from baseline in SBI is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. SBI is a composite score based on Soorya et al. (2015) which identified measures that comprise this metric. Scores from the Children's Communication Checklist-2 (CCC-2) Social Relations and Nonverbal Communication subscales and the Griffith Empathy Measure (GEM) were standardized as z-scores using the sample means and standard deviations at baseline. CCC-2 subscale scores and reversed GEM total scores were used so higher z-scores reflect more impairment across measures. The SBI outcome was subsequently derived by averaging the z-scores. At baseline, the sample average SBI z-score equals 0; higher individual scores indicate relatively more impairment in social behavior skills. Larger, negative slopes represent improvement.
Time frame: Baseline and Week 12 (Endpoint)
Change From Baseline in Social Behavior Impairment (SBI) Composite
The change from baseline in SBI is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. SBI is a composite score based on Soorya et al. (2015) which identified measures that comprise this metric. Scores from the Children's Communication Checklist-2 (CCC-2) Social Relations and Nonverbal Communication subscales and the Griffith Empathy Measure (GEM) were standardized as z-scores using the sample means and standard deviations at baseline. CCC-2 subscale scores and reversed GEM total scores were used so higher z-scores reflect more impairment across measures. The SBI outcome was subsequently derived by averaging the z-scores. At baseline, the sample average SBI z-score equals 0; higher individual scores indicate relatively more impairment in social behavior skills. Larger, negative slopes represent improvement.
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The facilitated play therapy group is a manualized treatment designed to tailor play to the interests and abilities of group members. Therapists use general therapeutics strategies such as reflective functioning statements to foster communication with therapists as well as between peers. Standard educational practices for children with ASD such as visual supports, schedules, and short-directed statements are also used. The concurrent parent group is supportive in nature.
Time frame: Baseline and Week 16 (1-month follow-up)
Rate of Change From Baseline in Social Behavior Impairment (SBI) Composite
The change from baseline in SBI is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. SBI is a composite score based on Soorya et al. (2015) which identified measures that comprise this metric. Scores from the Children's Communication Checklist-2 (CCC-2) Social Relations and Nonverbal Communication subscales and the Griffith Empathy Measure (GEM) were standardized as z-scores using the sample means and standard deviations at baseline. CCC-2 subscale scores and reversed GEM total scores were used so higher z-scores reflect more impairment across measures. The SBI outcome was subsequently derived by averaging the z-scores. At baseline, the sample average SBI z-score equals 0; higher individual scores indicate relatively more impairment in social behavior skills. Larger, negative slopes represent improvement.
Time frame: Baseline and Week 16 (1-month follow-up)
Change From Baseline in Social Behavior Impairment (SBI) Composite
The change from baseline in SBI is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. SBI is a composite score based on Soorya et al. (2015) which identified measures that comprise this metric. Scores from the Children's Communication Checklist-2 (CCC-2) Social Relations and Nonverbal Communication subscales and the Griffith Empathy Measure (GEM) were standardized as z-scores using the sample means and standard deviations at baseline. CCC-2 subscale scores and reversed GEM total scores were used so higher z-scores reflect more impairment across measures. The SBI outcome was subsequently derived by averaging the z-scores. At baseline, the sample average SBI z-score equals 0; higher individual scores indicate relatively more impairment in social behavior skills. Larger, negative slopes represent improvement.
Time frame: Baseline and Week 24 (3-month follow-up)
Rate of Change From Baseline in Social Behavior Impairment (SBI) Composite
The change from baseline in SBI is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. SBI is a composite score based on Soorya et al. (2015) which identified measures that comprise this metric. Scores from the Children's Communication Checklist-2 (CCC-2) Social Relations and Nonverbal Communication subscales and the Griffith Empathy Measure (GEM) were standardized as z-scores using the sample means and standard deviations at baseline. CCC-2 subscale scores and reversed GEM total scores were used so higher z-scores reflect more impairment across measures. The SBI outcome was subsequently derived by averaging the z-scores. At baseline, the sample average SBI z-score equals 0; higher individual scores indicate relatively more impairment in social behavior skills. Larger, negative slopes represent improvement.
Time frame: Baseline and Week 24 (3-month follow-up)
Change From Baseline in Social Cognition (SC) Composite
The change from baseline in SC is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. SC is a composite score, including the Reading the Mind in the Eyes Test (RMET) and the Diagnostic Analysis of Nonverbal Accuracy-2 (DANVA2), based on Soorya et al. (2015). RMET has 28 items rated correct/incorrect (total 0-28). DANVA2 contains 4 sets of 24 items rated correct/incorrect (total 0-96). Percent correct was calculated for each measure given the difference in denominators and to allow for administrative omissions. Percentages were standardized as z-scores using the sample means and standard deviations at baseline. The SC outcome was subsequently derived by averaging the z-scores. At baseline, the sample average SC z-score equals 0; higher individual scores reflect stronger skills on social cognitive tasks compared to lower scores. Larger, positive slopes indicate skill improvement.
Time frame: Baseline and Week 12 (Endpoint)
Rate of Change From Baseline in Social Cognition (SC) Composite
The change from baseline in SC is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. SC is a composite score, including the Reading the Mind in the Eyes Test (RMET) and the Diagnostic Analysis of Nonverbal Accuracy-2 (DANVA2), based on Soorya et al. (2015). RMET has 28 items rated correct/incorrect (total 0-28). DANVA2 contains 4 sets of 24 items rated correct/incorrect (total 0-96). Percent correct was calculated for each measure given the difference in denominators and to allow for administrative omissions. Percentages were standardized as z-scores using the sample means and standard deviations at baseline. The SC outcome was subsequently derived by averaging the z-scores. At baseline, the sample average SC z-score equals 0; higher individual scores reflect stronger skills on social cognitive tasks compared to lower scores. Larger, positive slopes indicate skill improvement.
Time frame: Baseline and Week 12 (Endpoint)
Change From Baseline in Social Cognition (SC) Composite
The change from baseline in SC is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. SC is a composite score, including the Reading the Mind in the Eyes Test (RMET) and the Diagnostic Analysis of Nonverbal Accuracy-2 (DANVA2), based on Soorya et al. (2015). RMET has 28 items rated correct/incorrect (total 0-28). DANVA2 contains 4 sets of 24 items rated correct/incorrect (total 0-96). Percent correct was calculated for each measure given the difference in denominators and to allow for administrative omissions. Percentages were standardized as z-scores using the sample means and standard deviations at baseline. The SC outcome was subsequently derived by averaging the z-scores. At baseline, the sample average SC z-score equals 0; higher individual scores reflect stronger skills on social cognitive tasks compared to lower scores. Larger, positive slopes indicate skill improvement.
Time frame: Baseline and Week 16 (1-month follow-up)
Rate of Change From Baseline in Social Cognition (SC) Composite
The change from baseline in SC is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. SC is a composite score, including the Reading the Mind in the Eyes Test (RMET) and the Diagnostic Analysis of Nonverbal Accuracy-2 (DANVA2), based on Soorya et al. (2015). RMET has 28 items rated correct/incorrect (total 0-28). DANVA2 contains 4 sets of 24 items rated correct/incorrect (total 0-96). Percent correct was calculated for each measure given the difference in denominators and to allow for administrative omissions. Percentages were standardized as z-scores using the sample means and standard deviations at baseline. The SC outcome was subsequently derived by averaging the z-scores. At baseline, the sample average SC z-score equals 0; higher individual scores reflect stronger skills on social cognitive tasks compared to lower scores. Larger, positive slopes indicate skill improvement.
Time frame: Baseline and Week 16 (1-month follow-up)
Change From Baseline in Social Cognition (SC) Composite
The change from baseline in SC is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. SC is a composite score, including the Reading the Mind in the Eyes Test (RMET) and the Diagnostic Analysis of Nonverbal Accuracy-2 (DANVA2), based on Soorya et al. (2015). RMET has 28 items rated correct/incorrect (total 0-28). DANVA2 contains 4 sets of 24 items rated correct/incorrect (total 0-96). Percent correct was calculated for each measure given the difference in denominators and to allow for administrative omissions. Percentages were standardized as z-scores using the sample means and standard deviations at baseline. The SC outcome was subsequently derived by averaging the z-scores. At baseline, the sample average SC z-score equals 0; higher individual scores reflect stronger skills on social cognitive tasks compared to lower scores. Larger, positive slopes indicate skill improvement.
Time frame: Baseline and Week 24 (3-month follow-up)
Rate of Change From Baseline in Social Cognition (SC) Composite
The change from baseline in SC is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. SC is a composite score, including the Reading the Mind in the Eyes Test (RMET) and the Diagnostic Analysis of Nonverbal Accuracy-2 (DANVA2), based on Soorya et al. (2015). RMET has 28 items rated correct/incorrect (total 0-28). DANVA2 contains 4 sets of 24 items rated correct/incorrect (total 0-96). Percent correct was calculated for each measure given the difference in denominators and to allow for administrative omissions. Percentages were standardized as z-scores using the sample means and standard deviations at baseline. The SC outcome was subsequently derived by averaging the z-scores. At baseline, the sample average SC z-score equals 0; higher individual scores reflect stronger skills on social cognitive tasks compared to lower scores. Larger, positive slopes indicate skill improvement.
Time frame: Baseline and Week 24 (3-month follow-up)
Number of Responder and Non-responder Participants Based on CGI-I Scores at Week 12 (Endpoint)
Global Functioning will be assessed using the Clinical Global Impressions-Improvement (CGI-I) Scale. A study physician followed standard CGI protocols to evaluate global improvement at each time point based on all available sources of information (e.g., caregiver interviews, behavior rating forms). The CGI-I employs a 7-point scale with the lowest score, 1, indicating the best outcome and the highest score, 7, indicating the worst outcome. Participants receiving scores of 1 (very much improved) or 2 (much improved) were considered responders. Participants receiving scores of 5 (minimally worse), 6 (much worse), or 7 (very much worse) were considered non-responders; note, no participant received a score worse than 5 which was used as the cut-off for non-responders. Participants receiving scores of 3 (minimally improved) or 4 (no change) were considered to show no significant change and omitted from the analysis.
Time frame: Week 12 (Endpoint)
Number of Responder and Non-responder Participants Based on CGI-I Scores at Week 16 (1-month Follow-up)
Global Functioning will be assessed using the Clinical Global Impressions-Improvement (CGI-I) Scale. A study physician followed standard CGI protocols to evaluate global improvement at each time point based on all available sources of information (e.g., caregiver interviews, behavior rating forms). The CGI-I employs a 7-point scale with the lowest score, 1, indicating the best outcome and the highest score, 7, indicating the worst outcome. Participants receiving scores of 1 (very much improved) or 2 (much improved) were considered responders. Participants receiving scores of 5 (minimally worse), 6 (much worse), or 7 (very much worse) were considered non-responders; note, no participant received a score worse than 5 which was used as the cut-off for non-responders. Participants receiving scores of 3 (minimally improved) or 4 (no change) were considered to show no significant change and omitted from the analysis.
Time frame: Week 16 (1-month follow-up)
Number of Responder and Non-responder Participants Based on CGI-I Scores at Week 24 (3-month Follow-up)
Global Functioning will be assessed using the Clinical Global Impressions-Improvement (CGI-I) Scale. A study physician followed standard CGI protocols to evaluate global improvement at each time point based on all available sources of information (e.g., caregiver interviews, behavior rating forms). The CGI-I employs a 7-point scale with the lowest score, 1, indicating the best outcome and the highest score, 7, indicating the worst outcome. Participants receiving scores of 1 (very much improved) or 2 (much improved) were considered responders. Participants receiving scores of 5 (minimally worse), 6 (much worse), or 7 (very much worse) were considered non-responders; note, no participant received a score worse than 5 which was used as the cut-off for non-responders . Participants receiving scores of 3 (minimally improved) or 4 (no change) were considered to show no significant change and omitted from the analysis.
Time frame: Week 24 (3-month follow-up)
Change From Baseline in Social Functioning (SRS-2)
The change from baseline in the Social Responsiveness Scale (SRS-2) is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. The SRS-2 is a caregiver reported measure of social behavior in the general population (3-18 yo) used to assess social functioning. The SRS-2 contains 65 items rated on a 4-point scale (1/not true to 4/almost always true). Scores are recoded 0-3 and totaled for a raw score. Raw scores are converted to T-scores based on age and sex. T-scores have a population mean of 50 with a standard deviation of 10. T-scores 60-65 indicate mild social impairment, 66-75 moderate deficits, and above 76 severe deficits strongly associated with autism. Higher SRS-2 T-scores indicate greater severity of social impairment. Larger, negative slopes reflect a greater reduction in severity.
Time frame: Baseline and Week 12 (Endpoint)
Rate of Change From Baseline in Social Functioning (SRS-2)
The change from baseline in the Social Responsiveness Scale (SRS-2) is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. The SRS-2 is a caregiver reported measure of social behavior in the general population (3-18 yo) used to assess social functioning. The SRS-2 contains 65 items rated on a 4-point scale (1/not true to 4/almost always true). Scores are recoded 0-3 and totaled for a raw score. Raw scores are converted to T-scores based on age and sex. T-scores have a population mean of 50 with a standard deviation of 10. T-scores 60-65 indicate mild social impairment, 66-75 moderate deficits, and above 76 severe deficits strongly associated with autism. Higher SRS-2 T-scores indicate greater severity of social impairment. Larger, negative slopes reflect a greater reduction in severity.
Time frame: Baseline and Week 12 (Endpoint)
Change From Baseline in Social Functioning (SRS-2)
The change from baseline in the Social Responsiveness Scale (SRS-2) is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. The SRS-2 is a caregiver reported measure of social behavior in the general population (3-18 yo) used to assess social functioning. The SRS-2 contains 65 items rated on a 4-point scale (1/not true to 4/almost always true). Scores are recoded 0-3 and totaled for a raw score. Raw scores are converted to T-scores based on age and sex. T-scores have a population mean of 50 with a standard deviation of 10. T-scores 60-65 indicate mild social impairment, 66-75 moderate deficits, and above 76 severe deficits strongly associated with autism. Higher SRS-2 T-scores indicate greater severity of social impairment. Larger, negative slopes reflect a greater reduction in severity.
Time frame: Baseline and Week 16 (1-month follow-up)
Rate of Change From Baseline in Social Functioning (SRS-2)
The change from baseline in the Social Responsiveness Scale (SRS-2) is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. The SRS-2 is a caregiver reported measure of social behavior in the general population (3-18 yo) used to assess social functioning. The SRS-2 contains 65 items rated on a 4-point scale (1/not true to 4/almost always true). Scores are recoded 0-3 and totaled for a raw score. Raw scores are converted to T-scores based on age and sex. T-scores have a population mean of 50 with a standard deviation of 10. T-scores 60-65 indicate mild social impairment, 66-75 moderate deficits, and above 76 severe deficits strongly associated with autism. Higher SRS-2 T-scores indicate greater severity of social impairment. Larger, negative slopes reflect a greater reduction in severity.
Time frame: Baseline and Week 16 (1-month follow-up)
Change From Baseline in Social Functioning (SRS-2)
The change from baseline in the Social Responsiveness Scale (SRS-2) is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. The SRS-2 is a caregiver reported measure of social behavior in the general population (3-18 yo) used to assess social functioning. The SRS-2 contains 65 items rated on a 4-point scale (1/not true to 4/almost always true). Scores are recoded 0-3 and totaled for a raw score. Raw scores are converted to T-scores based on age and sex. T-scores have a population mean of 50 with a standard deviation of 10. T-scores 60-65 indicate mild social impairment, 66-75 moderate deficits, and above 76 severe deficits strongly associated with autism. Higher SRS-2 T-scores indicate greater severity of social impairment. Larger, negative slopes reflect a greater reduction in severity.
Time frame: Baseline and Week 24 (3-month follow-up)
Rate of Change From Baseline in Social Functioning (SRS-2)
The change from baseline in the Social Responsiveness Scale (SRS-2) is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. The SRS-2 is a caregiver reported measure of social behavior in the general population (3-18 yo) used to assess social functioning. The SRS-2 contains 65 items rated on a 4-point scale (1/not true to 4/almost always true). Scores are recoded 0-3 and totaled for a raw score. Raw scores are converted to T-scores based on age and sex. T-scores have a population mean of 50 with a standard deviation of 10. T-scores 60-65 indicate mild social impairment, 66-75 moderate deficits, and above 76 severe deficits strongly associated with autism. Higher SRS-2 T-scores indicate greater severity of social impairment. Larger, negative slopes reflect a greater reduction in severity.
Time frame: Baseline and Week 24 (3-month follow-up)
Change From Baseline in Quality of Life (CGSQ)
The change from baseline in the Caregiver Strain Questionnaire (CGSQ) is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. The CGSQ was used to assess quality of life. The CGSQ is a parent-rated questionnaire designed for parents of children and adolescents with emotional and behavioral disorders. It includes 21 items rated on a 5-point problem scale (1 = not at all to 5 = very much) rating subjective internal, subjective external, and objective strain. A global measure of strain can be calculated by averaging the scores together. Higher CGSQ scores indicate greater strain. Larger, negative slopes reflect a greater reduction in strain (i.e., improvement in score).
Time frame: Baseline and Week 12 (Endpoint)
Rate of Change From Baseline in Quality of Life (CGSQ)
The change from baseline in the Caregiver Strain Questionnaire (CGSQ) is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. The CGSQ was used to assess quality of life. The CGSQ is a parent-rated questionnaire designed for parents of children and adolescents with emotional and behavioral disorders. It includes 21 items rated on a 5-point problem scale (1 = not at all to 5 = very much) rating subjective internal, subjective external, and objective strain. A global measure of strain can be calculated by averaging the scores together. Higher CGSQ scores indicate greater strain. Larger, negative slopes reflect a greater reduction in strain (i.e., improvement in score).
Time frame: Baseline and Week 12 (Endpoint)
Change From Baseline in Quality of Life (CGSQ)
The change from baseline in the Caregiver Strain Questionnaire (CGSQ) is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. The CGSQ was used to assess quality of life. The CGSQ is a parent-rated questionnaire designed for parents of children and adolescents with emotional and behavioral disorders. It includes 21 items rated on a 5-point problem scale (1 = not at all to 5 = very much) rating subjective internal, subjective external, and objective strain. A global measure of strain can be calculated by averaging the scores together. Higher CGSQ scores indicate greater strain. Larger, negative slopes reflect a greater reduction in strain (i.e., improvement in score).
Time frame: Baseline and Week 16 (1-month follow-up)
Rate of Change From Baseline in Quality of Life (CGSQ)
The change from baseline in the Caregiver Strain Questionnaire (CGSQ) is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. The CGSQ was used to assess quality of life. The CGSQ is a parent-rated questionnaire designed for parents of children and adolescents with emotional and behavioral disorders. It includes 21 items rated on a 5-point problem scale (1 = not at all to 5 = very much) rating subjective internal, subjective external, and objective strain. A global measure of strain can be calculated by averaging the scores together. Higher CGSQ scores indicate greater strain. Larger, negative slopes reflect a greater reduction in strain (i.e., improvement in score).
Time frame: Baseline and Week 16 (1-month follow-up)
Change From Baseline in Quality of Life (CGSQ)
The change from baseline in the Caregiver Strain Questionnaire (CGSQ) is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. The CGSQ was used to assess quality of life. The CGSQ is a parent-rated questionnaire designed for parents of children and adolescents with emotional and behavioral disorders. It includes 21 items rated on a 5-point problem scale (1 = not at all to 5 = very much) rating subjective internal, subjective external, and objective strain. A global measure of strain can be calculated by averaging the scores together. Higher CGSQ scores indicate greater strain. Larger, negative slopes reflect a greater reduction in strain (i.e., improvement in score).
Time frame: Baseline and Week 24 (3-month follow-up)
Rate of Change From Baseline in Quality of Life (CGSQ)
The change from baseline in the Caregiver Strain Questionnaire (CGSQ) is represented by the slope of each group. The primary outcome is the difference between groups in this rate of change or the group\*time interaction. The CGSQ was used to assess quality of life. The CGSQ is a parent-rated questionnaire designed for parents of children and adolescents with emotional and behavioral disorders. It includes 21 items rated on a 5-point problem scale (1 = not at all to 5 = very much) rating subjective internal, subjective external, and objective strain. A global measure of strain can be calculated by averaging the scores together. Higher CGSQ scores indicate greater strain. Larger, negative slopes reflect a greater reduction in strain (i.e., improvement in score).
Time frame: Baseline and Week 24 (3-month follow-up)