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The present study examined India's publications (2803) on schizophrenia, using various bibliometric indicators during 1990-2019. The study focuses on the number of publications, and citations received by the papers on schizophrenia, published by authors affiliated to Indian institutes by using Scopus data base. Additionally, an attempt was made to evaluate the performance of India's leading organizations and authors, and inter-collaborative linkages between them. Scopus database include publications of Indian Journal of Psychiatry and Indian Journal of Psychological Medicine from 2009 and 2011. Accordingly, the publications in these journals were included after these years. Analysis of the publications showed that India is globally ranked at 13 th position in number of publications on schizophrenia with 2.04 % global share, depicting 14.21 % annual growth, with 22.8 % of publications having international collaboration. Publications from India published during the period of 1990-2019, registered a citation impact per paper (CPP) of 13.3. National Institute of Mental Health and Neurosciences, Bangalore (671 papers), Post Graduate Institute of Medical Education and Research, Chandigarh (271 papers) and Central Instittue of Psychiatry, Ranchi (136 papers) were the most productive institutes. However, the most impactful organizations in terms of citation per paper (CPP) and relative citation index (RCI), Indian Institute of Science, Bangalore (77.27 CPP and 5.78 RCI), Schizophrenia Research Foundation, Chennai (31.16 CPP and 2.55 RCI) and Banaras Hindu University, Varanasi (29.21 CPP and 2.18 RCI) were at the top. In terms of Individual authors, G. Venkatasubramanian (180 papers), and B.N. Gangadhar (162 papers) were the most productive authors and R.Thara (31.87 CPP and 2.38 RCI), B.K. Thelma (24.0 CPP and 1.8 RCI), M.S. Keshavan (23.91 CPP and 1.79 RCI) were the most impactful authors, among the top 15 authors. The journals which reported comparatively higher productivity for Indian publications included Indian Journal of Psychiatry (242 papers), followed by Asian Journal of Psychiatry (214 papers) and Indian Journal of Psychological Medicine (103 papers). In terms of most impactful Indian publications, these were published in The Lancet (97.7), Progress in Neuro Psychopharmacology & Biological Psychiatry (50) and Schizophrenia Bulletin (44.67)., (Copyright © 2020. Published by Elsevier B.V.)

The paper examines 1037 publications on bipolar disorder (BD) during the years 2000-19 from India, as listed in the Scopus database. India's publications constituted 2.27 % share of global output (45,624 publications) in the study period of 20 years. India does not figure in the top 10 countries in terms of research output on BD. The number of publications on BD from India increased from 13 in 2000 to 107 in 2019, registering 14.44 % annual average growth, higher than world's growth of 6.02 %. India's 10-year cumulative publications increased from 264 during 2000-09 to 773 during 2010-19, registering 192.8 % absolute growth, much higher than world cumulative growth of 63.27 %. India's publications on BD averaged citation impact per paper of 14.24, which decreased from 25.38 to 10.43 from 2000-09 to 2010-19. Maximum numbers of papers from India on BD were published by researchers from National Institute of Mental Health and Neurosciences, Bangalore (222 papers),Post Graduate Institute of Medical Education and Research, Chandigarh(118 papers), and AII India Institute of Medical Sciences, New Delhi (79 papers). Lady Harding Medical College, New Delhi (36.20 and 2.54), Schizophrenia Research Foundation, Chennai (27.45 and 1.93), and King George's Medical University, Lucknow (25.21 and 1.77) were the most significant organizations in terms of citation per paper and relative citation index. Maximum number of papers were published in Indian Journal of Psychiatry (101 papers), followed by Asian Journal of Psychiatry (88 papers) and Indian Journal of Psychology Medicine (34 papers)., (Copyright © 2020 Elsevier B.V. All rights reserved.)