Table 1.

Study measures and assessment times.

Measure	Assessment	Time of assessment
Client measures
Patient Health Questionnaire (PHQ-9)	Depression symptoms	Baseline, internet-delivered cognitive behavioral therapy (iCBT) exit, and service exit
Generalized Anxiety Disorder (GAD-7)	Anxiety symptoms	Baseline, iCBT exit, and service exit
Work and Social Adjustment (WSAS)	Work and social functioning	Baseline, iCBT exit, and service exit
Scale to Assess the Therapeutic Relationship—Patient Version (STAR-P)	Therapeutic alliance	Throughout treatment, after each progress review with clinician in iCBT
Clinician Measures
Scale to Assess the Therapeutic Relationship—Clinician Version (STAR-C)	Therapeutic Alliance	Throughout treatment, at each review of client in iCBT
Semi-structured Interviews	Therapeutic alliance	One month post-trial

iCBT exit, end of iCBT treatment; service exit, end of step 3 Improving Access to Psychological Therapies (IAPT) treatment.