The SDS is a three-item scale measuring functional impairment in
the following domains: (1) work and studies, (2) social life, and (3)
family life and home responsibilities. The SDS has been found to have
high internal consistency of 0.89 (Leon et al., 1997). In the present
study, Cronbach's α = 0.80. Similar to previous translations of the
SDS (Molykhia and Ibrahim, 2009), the SDS was translated by a team
of professional translators and reviewed and approved by the lead
author.
Participants were administered English and Arabic versions of all
primary and secondary questionnaires at pre-treatment, posttreatment
and at 3-month follow-up, allowing them to complete
questionnaires in their preferred language. English and Arabic versions
of the PHQ-9 and GAD-7 were also administered weekly to
monitor safety and progress of each participant