The aim of this study was to built scientific evidences based on rigorous analyses of large scale population based health survey data in India. It specifically aims to generate evidence and inform policy on prevalence, socio-economic variation and inequality in health care utilisation of chronic diseases among older adults in India. The data collcetd in Longitudinal Ageing Study of India (LASI), the National Family and Health survey (NFHSs) and the National Sample Survey has been used. A total of six paper has been published in high quality impact factor journal such as PLoS Medcine, WHO Bulletin, BMC Health Services, Pain etc. Findings from the above research papers have been useful in evidence based planning