Table 2

Study measures

DomainToolSourceValidated toolTime of assessment
Sociodemographic/lifestyleScreening questionnaireSelf-reportScreening
Sociodemographic questionnaireSelf-reportBaseline
Antidepressant history and  concomitant treatment questionnaireSelf-report/general practiceBaseline
Drug and alcohol questionnaireSelf-reportBaseline
PsychiatricPatient Health Questionnaire-9Self-reportScreening
Clinical Interview Schedule-RevisedSelf-reportEligibility
Beck Depression Inventory-IISelf-reportEligibility, baseline,
follow-ups
Snaith-Hamilton Pleasure Scale QuestionnaireSelf-reportBaseline,
follow-ups
Multidimensional Fatigue InventorySelf-reportBaseline,
follow-ups
Visual Analogue Scales for Subjective FeelingsSelf-reportBaseline,
follow-ups
Perceived Stress ScaleSelf-reportBaseline
CognitiveNational Adult Reading Scale for estimated premorbid IQInterviewer assessedBaseline,
follow-up 2
Cambridge Neuropsychological Test Automated Battery (CANTAB) reaction timeComputer taskBaseline,
follow-up 2
Symbol coding taskComputer/paperBaseline,
follow-up 2
CANTAB Rapid Visual Information ProcessingComputer taskBaseline,
follow-up 2
CANTAB Paired Associates LearningComputer taskBaseline,
follow-up 2
Emotional categorisation and recall taskComputer taskBaseline,
follow-up 2
BiologicInflammatory markers, cardiometabolic markers, IDO activation, white cell phenotypingLaboratory testsBaseline,
follow-ups
GeneticGene expression/genotypingBlood (RNA, DNA)Baseline,
follow-up 2