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Feasibility and acceptability of the Unified Protocol for anxiety and depression in Pakistan: a pilot randomized
Asma Nisa1, Salma Siddiqui2, Amantia A Ametaj3
1Department of Behavioral Sciences, School of Social Sciences and Humanities, National University of Sciences and Technology (NUST), H-12 Campus, Islamabad, 44000, Pakistan. asmanisa@s3h.nust.edu.pk.
Background:
Access to evidence-based psychological treatments for common mental health disorders remains limited in low-resource settings. This pilot randomized controlled trial evaluated the feasibility and acceptability of the Urdu Adapted Unified Protocol (UA-UP), a transdiagnostic cognitive-behavioral intervention for anxiety and depression, in Pakistan, and explored preliminary clinical outcomes.
Methods:
51 adults meeting diagnostic criteria for anxiety and/or depressive disorders were randomized to a 14-week UA-UP intervention (n=25) or a waitlist control (n=26). Feasibility was assessed through recruitment, retention, and adherence rates. Acceptability was evaluated via session attendance, homework completion, participant satisfaction (CSQ-8), and qualitative feedback. Clinical outcomes (anxiety, depression, emotion regulation, and functional impairment) were assessed using validated measures. Between-group differences were analyzed using repeated-measures general linear models, and 95% confidence intervals were reported.
Results:
Feasibility indicators were high, with recruitment (85.7%), retention (82.4%), and strong session adherence. Acceptability was supported by 79% homework completion and high satisfaction (mean CSQ-8=29.65, SD=2.60). Participants in the UA-UP group demonstrated greater improvements in anxiety, depression, and functional impairment compared to the control group, with large effect size estimates (e.g., anxiety g=1.18; depression g=1.15). Qualitative findings indicated enhanced emotional awareness, improved coping, and strong engagement with culturally adapted content.
Conclusions:
The UA-UP demonstrated high feasibility and acceptability as a culturally adapted transdiagnostic CBT intervention in Pakistan. These findings support the conduct of a fully powered randomized controlled trial to evaluate clinical effectiveness and inform scalable implementation in low-resource settings.
Trial Registration:
ClinicalTrials.gov, NCT06002087. Registered 03 August 2023 (retrospectively registered). https://clinicaltrials.gov/study/NCT06002087?term=Asma%20Nisa&rank=1 .
