anbu ananthan velmurugan. Modified BG Prasad socioeconomic scale classification update based on New CPI (IW) series from September 2020. NJRCM [Internet]. 2020 Dec. 26 [cited 2026 Jul. 26];9(4):129-31. Available from: https://www.journal.njrcm.com/index.php/njrcm/article/view/155