Table 4.

RE-AIM dimensions & indicators for CoCo-HD program evaluation

SN	Dimensions	Key indicators
1	Reach	Tamil Nadu: The proportion of people with diabetes and hypertension enrolled in PSG in their respective communities. The proportion of CHWs trained on CoCo-HD program delivery. Kerala: Number of individuals with hypertension /diabetes or both approached and enrolled in the PSG; number of PSGs with a minimum of 10 participants; proportion or the number of individuals in absolute terms dropped-out from the PSG. The qualitative reach dimension will identify the influence of personal and contextual factors that contributed to the participation and non-participation in the intervention, the question of Why and Why not.
2	Effectiveness	The proportion of people with diabetes and hypertension who achieved adequate control of blood pressure and blood glucose at the end of the intervention. The proportion of people with diabetes and hypertension who attended at least five PSG sessions. Qualitatively, we will explore factors that affected the effectiveness of the intervention from the perspectives of the provider and the beneficiaries, and whether they find the outcome of the intervention meaningful.
3	Adoption	The proportion of people with diabetes and hypertension who have set at least one lifestyle goal. The proportion of CHWs/MLSPs who facilitated PSGs as part of the community health program. The proportion of CHWs/MLSPs who conducted at least nine (75%) PSG sessions. Qualitatively, we will explore the system factors that influence the adoption of PSG interventions and the enabling and challenging factors towards the adoption or initiation of the implementation.
4	Implementation	The proportion of PSG sessions and activities delivered per the protocol. The proportion of PSG members who attended all 12 sessions. Qualitatively, we will explore adaptations and modifications in the intervention delivery.
5	Maintenance	The proportion of people with diabetes and hypertension who maintained blood pressure and blood glucose within recommended ranges for six months after intervention. The proportion of PSGs who meet monthly after six months of intervention. The proportion of health sub-centres included in the study where the PSG intervention became part of routine care. Qualitatively, we will explore factors that facilitated the institutionalisation of PSG interventions in the routine management of hypertension and diabetes in the health sub-centres. At the individual-level, we will explore reasons for adherence and non-adherence to the intervention six months after implementation of the PSG.