Table 1

Schedule of enrolment, interventions and assessments

Time point	Study period
	Enrolment	Allocation	Postallocation		Close-out
	-t₁	0	t₆	t₁₂	t₁₂
Enrolment
Eligibility screen	X
Informed consent	X
Allocation		X
Interventions
IDA		X	X	X	X
Wait list control		X	X	X	X
Assessments
Online survey		X	X	X
Process evaluation interviews					X