The large scale ICMR-INDIAB study on prevalence of diabetes and prediabetes in India, recently published in the Lancet (Diabetes & Endocrinology), cites this update for the socioeconomic status assessment.
Weblink (Full article available after free registration at the Lancet site)
Added a page on Frequently Asked Questions (FAQs):
Based upon feedback received, the layout of the tool has been optimized to make it more user-friendly over mobile platforms.
Income categories in Kuppuswamy scale are Family Income per month, not Per Capita Income per month.