Table 2.

Measurement schedule

	Questionnaire part I at landing page	Questionnaire part II on smartphone app (week 0)	Week 1	Week 2	Week 3	Week 4	Week 5	Week 6	Weeks 10, 14, 18, 22	Week 26	Weeks 30, 34, 38, 42, 46	Week 50
Allowances (days)	–		+6	+6	+6	+6	+6	+14	+14	+14	+14	+28
PHQ-9	○	○	Δ	Δ	○	Δ	Δ	○	○	○	○	○
GAD-7		○			○			○		○		○
ISI		○			○			○		○		○
SWEMWBS		○			○			○		○		○
CIDI		○										○
Baseline characteristics		○
ASC-Motivation		○			○
ICT usage		○
ACE		○
Short Big-5		○
ASC-Life difficulties		○
ASC-Social support		○
CBT skills	○							○		○		○
WSAS		○						○				○
UWES		□						□				□
HPQ		□						□				□
EQ-5D-5L		○						○				○
Co-interventions								○				○
CSQ-3								○				○

○: to be administered to all participants; □: only to those currently employed; and Δ: all participants except for groups 10 and 11.

ACE, Adverse Childhood Experiences; ASC, Assessment of Signal Cases; CBT, cognitive–behavioural therapy; CIDI, Composite International Diagnostic Interview; CSQ-3, Customer Satisfaction Questionnaire-3; EQ-5D-5L, EuroQOL-5D-5L; GAD-7, Generalized Anxiety Disorder-7; HPQ, Health and Work Performance Questionnaire; ICT, information and communication technologies; ISI, Insomnia Severity Index; PHQ-9, Patient Health Questionnaire-9; SWEMWBS, Short Warwick Edinburgh Mental Well-Being Scale; UWES, Utrecht Work Engagement Scale; WSAS, Work and Social Adjustment Scale.