Table 1 Participant timeline

Enrolment

 Eligibility screening

X

 Informed consent

X

 WHO-5 screen^a

X

Intervention

 Problem-solving therapy (1–7 sessions)

X

Assessments

 Primary outcome

  PHQ-9

X

X

X

 Secondary outcomes

  WHO-5

X

X

X

  GAD-7

X

X

X

  PAID-5^b

X

X

X

  HbA1c^b

X

X

  Total cholesterol

X

X

  LDL

X

X

Process outcomes

 Implementation

  Fidelity

X

  Dose

X

  Reach

X

 Mechanisms of impact

  Mediators

X

  Unintended consequences

X