Table 1 The checklist used for assessment of methodology reporting in this study, modified from the CONSORT for Abstracts guidelines

1. Design

Explicit description of the trial design (e.g. parallel, cluster, crossover)

2. Participants

Eligibility criteria for participants

3. Setting

Settings where the data were collected

4. Interventions

Interventions intended for each group

5. Outcome

Clearly defined primary/main outcome(s) for the trial

5a. Time point

When was the primary/main outcome(s) assessed

5b. No. of outcomes ^c

The number of described primary/main outcome(s)

6. Random assignment

Clear statement that participants were allocated to groups in a randomised manner

6a. Unit of randomisation

Description of the unit of randomisation (e.g. patients, schools, communities)

7. Sequence generation

Method used for random sequence generation

8. Allocation concealment

Method used for allocation concealment

9. Blinding (Masking)

Whether or not participants, caregivers, and those assessing the outcomes were blinded to group assignment

9a. Generic blinding

Generic description only (e.g. single-blind, double-blind)