Response to correspondence article on the research protocol titled Towards Health Equity and Transformative Action on tribal health (THETA) studyto describe, explain and act on tribal health inequities in India: A health systems research study protocol.

In this correspondence, we, co-authors and collaborators involved in the Towards Health Equity and Transformative Action on tribal health (THETA) study respond to a recent article published in Wellcome Open Research titled  Correspondence article on the research protocol titled 'Towards Health Equity and Transformative Action on tribal health (THETA) study to describe, explain and act on tribal health inequities in India: A health systems research study protocol' published in Wellcome Open Research in December 2019 In the first part, we provide overall clarifications on the THETA study and in the second part respond to specific comments by the authors of the aforementioned correspondence.

Affirmative action, minorities, and public services in India: Charting a future research and practice agenda.

The National Health Policy in India mentions equity as a key policy principle and emphasises the role of affirmative action in achieving health equity for a range of excluded groups. We conducted a scoping review of literature and three multi-stakeholder workshops to better understand the available evidence on the impact of affirmative action policies in enhancing the inclusion of ethnic and religious minorities in health, education and governance in India. We consider these public services an important mechanism to enhance the social inclusion of many excluded groups. On the whole, the available empirical evidence regarding the uptake and impact of affirmative action policies is limited. Reservation policies in higher education and electoral constituencies have had a limited positive impact in enhancing the access and representation of minorities. However, reservations in government jobs remain poorly implemented. In general, class, gender and location intersect, creating inter- and intra-group differentials in the impact of these policies. Several government initiatives aimed at enhancing the access of religious minorities to public services/institutions remain poorly evaluated. Future research and practice need to focus on neglected but relevant research themes such as the role of private sector providers in supporting the inclusion of minorities, the political aspects of policy development and implementation, and the role of social mobilisation and movements. Evidence gaps also need to be filled in relation to information systems for monitoring and assessment of social disadvantage, implementation and evaluative research on inclusive policies and understanding how the pathways to inequities can be effectively addressed.

Towards Health Equity and Transformative Action on tribal health (THETA) study to describe, explain and act on tribal health inequities in India: A health systems research study protocol.

Background: In India, heterogenous tribal populations are grouped together under a common category, Scheduled Tribe, for affirmative action. Many tribal communities are closely associated with forests and difficult-to-reach areas and have worse-off health and nutrition indicators. However, poor population health outcomes cannot be explained by geography alone. Social determinants of health, especially various social disadvantages, compound the problem of access and utilisation of health services and undermine their health and nutritional status. The Towards Health Equity and Transformative Action on tribal health (THETA) study has three objectives: (1) describe and analyse extent and patterns of health inequalities, (2) generate theoretical explanations, and (3) pilot an intervention to validate the explanation.     Methods: For objective 1, we will conduct household surveys in seven forest areas covering 2722 households in five states across India, along a gradient of socio-geographic disadvantage. For objective 2, we will purposefully select case studies illustrating processes through which socio-geographic disadvantages act at the individual, household/neighbourhood, village or population level, paying careful attention to the interactions across various known axes of inequity. We will use a realist evaluation approach with context-mechanism-outcome configurations generated from the wider literature on tribal health and results of objective 1. For objective 3, we will partner with willing stakeholders to design and pilot an equity-enhancing intervention, drawing on the theoretical explanation generated and evaluate it to further refine our final explanatory theory. Discussion: THETA project seeks to generate site-specific evidence to guide public health policy and programs to better contribute to equitable health in tribal populations. It fulfills the current gap in generating and testing explanatory social theories on the persistent and unfair accumulation of geographical and social disadvantage among tribal populations and finally examines if such approaches could help design equity-enhancing interventions to improve tribal health.