Study progression criteria
| Criteria | Green | Amber | Red |
| Individual-level recruitment | ≥160 participants (100+%) | 128–159 participants (80–99%) | <128 participants (below 80%) |
| Cluster-level recruitment | 80 (100%) clusters each recruit at least one participant | 72–79 clusters each recruit at least one participant (90–99%) | <72 clusters each recruit at least one participant (below 90%) |
Progression criteria after 4 months of participant trial recruitment.