K. N. Roy Chengappa

5.2k total citations
98 papers, 3.7k citations indexed

About

K. N. Roy Chengappa is a scholar working on Psychiatry and Mental health, Clinical Psychology and Physiology. According to data from OpenAlex, K. N. Roy Chengappa has authored 98 papers receiving a total of 3.7k indexed citations (citations by other indexed papers that have themselves been cited), including 62 papers in Psychiatry and Mental health, 15 papers in Clinical Psychology and 14 papers in Physiology. Recurrent topics in K. N. Roy Chengappa's work include Schizophrenia research and treatment (41 papers), Bipolar Disorder and Treatment (32 papers) and Electroconvulsive Therapy Studies (21 papers). K. N. Roy Chengappa is often cited by papers focused on Schizophrenia research and treatment (41 papers), Bipolar Disorder and Treatment (32 papers) and Electroconvulsive Therapy Studies (21 papers). K. N. Roy Chengappa collaborates with scholars based in United States, United Kingdom and Canada. K. N. Roy Chengappa's co-authors include Jaspreet S. Brar, Haranath Parepally, Rohan Ganguli, Bruce S. Rabin, Mauricio Tohen, David J. Kupfer, Robert W. Baker, Joseph Levine, Gary D. Tollefson and Patricia J. Schlicht and has published in prestigious journals such as American Journal of Psychiatry, Biological Psychiatry and The British Journal of Psychiatry.

In The Last Decade

K. N. Roy Chengappa

95 papers receiving 3.5k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
K. N. Roy Chengappa United States 33 2.4k 577 530 404 379 98 3.7k
Rocío Pérez‐Iglesias Spain 40 2.9k 1.2× 537 0.9× 355 0.7× 553 1.4× 389 1.0× 106 4.2k
Emilio Sacchetti Italy 32 2.1k 0.9× 518 0.9× 478 0.9× 163 0.4× 287 0.8× 123 3.6k
Jess G. Fiedorowicz United States 36 2.0k 0.8× 914 1.6× 527 1.0× 275 0.7× 464 1.2× 179 4.1k
Sukdeb Mukherjee United States 27 1.8k 0.7× 400 0.7× 645 1.2× 340 0.8× 289 0.8× 84 3.1k
Jaspreet S. Brar United States 28 1.6k 0.6× 341 0.6× 471 0.9× 572 1.4× 198 0.5× 76 2.8k
Iría Grande Spain 28 3.0k 1.3× 686 1.2× 1.0k 1.9× 229 0.6× 447 1.2× 92 4.2k
Renrong Wu China 33 1.5k 0.6× 441 0.8× 401 0.8× 611 1.5× 288 0.8× 153 3.8k
Amirhossein Modabbernia Iran 30 1.2k 0.5× 527 0.9× 913 1.7× 248 0.6× 321 0.8× 68 3.5k
Jakub Z. Konarski Canada 28 1.5k 0.6× 510 0.9× 402 0.8× 267 0.7× 424 1.1× 47 2.8k
Haluk A. Savaş Türkiye 32 1.4k 0.6× 621 1.1× 1.1k 2.1× 335 0.8× 217 0.6× 116 3.5k

Countries citing papers authored by K. N. Roy Chengappa

Since Specialization
Citations

This map shows the geographic impact of K. N. Roy Chengappa's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by K. N. Roy Chengappa with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites K. N. Roy Chengappa more than expected).

Fields of papers citing papers by K. N. Roy Chengappa

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by K. N. Roy Chengappa. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by K. N. Roy Chengappa. The network helps show where K. N. Roy Chengappa may publish in the future.

Co-authorship network of co-authors of K. N. Roy Chengappa

This figure shows the co-authorship network connecting the top 25 collaborators of K. N. Roy Chengappa. A scholar is included among the top collaborators of K. N. Roy Chengappa based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with K. N. Roy Chengappa. K. N. Roy Chengappa is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Jones, Nev, Shaun M. Eack, K. N. Roy Chengappa, et al.. (2024). Over 30 years of STEP: The Pittsburgh experience with first‐episode psychosis. Early Intervention in Psychiatry. 18(10). 869–876.
2.
Sarpal, Deepak K., et al.. (2024). Variation of Clozapine Use for Treatment of Schizophrenia: Evidence from Pennsylvania Medicaid and Dually Eligible Enrollees. Community Mental Health Journal. 60(4). 743–753. 2 indexed citations
3.
Chengappa, K. N. Roy, et al.. (2024). A quality improvement program for managing clozapine-induced constipation in a long-term structured residential setting for persons with serious mental illness. Archives of Psychiatric Nursing. 48. 13–19. 1 indexed citations
4.
Gannon, Jessica M., Priya Gopalan, Grace Lim, et al.. (2021). ECT for a pregnant patient with bipolar disorder in the COVID‐19 Era: A clinical conundrum. Bipolar Disorders. 23(5). 524–527. 3 indexed citations
5.
Schooler, Nina R., Stephen R. Marder, K. N. Roy Chengappa, et al.. (2016). Clozapine and Risperidone in Moderately Refractory Schizophrenia. The Journal of Clinical Psychiatry. 77(5). 628–634. 13 indexed citations
6.
Ghinassi, Frank, et al.. (2013). The Development and Implementation of an Electronic Health Record Tool for Monitoring Metabolic Syndrome Indices in Patients with Serious Mental Illness. Clinical Schizophrenia & Related Psychoses. 10(aop). 1–25. 2 indexed citations
7.
Perkins, Kenneth A., et al.. (2013). Sensitivity and specificity of a procedure for early human screening of novel smoking cessation medications. Addiction. 108(11). 1962–1968. 18 indexed citations
8.
Chengappa, K. N. Roy, Scott R. Turkin, Susan DeSanti, et al.. (2012). A preliminary, randomized, double-blind, placebo-controlled trial of l-carnosine to improve cognition in schizophrenia. Schizophrenia Research. 142(1-3). 145–152. 68 indexed citations
9.
Chengappa, K. N. Roy, et al.. (2012). Recurrent Episodes of Hypothermia With Psychiatric Medications. The Primary Care Companion For CNS Disorders. 14(1). 2 indexed citations
10.
Chengappa, K. N. Roy, et al.. (2011). Obstructive sleep apnoea and schizophrenia: a primer for psychiatrists. Acta Neuropsychiatrica. 23(5). 201–209. 5 indexed citations
11.
Yatham, Lakshmi N., Ivan J. Torres, Gin S. Malhi, et al.. (2010). The International Society for Bipolar Disorders–Battery for Assessment of Neurocognition (ISBD‐BANC). Bipolar Disorders. 12(4). 351–363. 202 indexed citations
12.
Perkins, Kenneth A., Caryn Lerman, Carolyn Fonte, et al.. (2010). Cross-Validation of a New Procedure for Early Screening of Smoking Cessation Medications in Humans. Clinical Pharmacology & Therapeutics. 88(1). 109–114. 44 indexed citations
13.
Chengappa, K. N. Roy, et al.. (2004). The Off-Label Use of Clozapine in Adolescents with Bipolar Disorder, Intermittent Explosive Disorder, or Posttraumatic Stress Disorder. Journal of Child and Adolescent Psychopharmacology. 14(1). 57–63. 39 indexed citations
14.
Parepally, Haranath, et al.. (2002). The use of concomitant medications in psychiatric inpatients treated with either olanzapine or other antipsychotic agents. Progress in Neuro-Psychopharmacology and Biological Psychiatry. 26(3). 437–440. 15 indexed citations
15.
Levine, Joseph, K. N. Roy Chengappa, Samuel Gershon, & Wayne C. Drevets. (2001). Differentiating primary pathophysiologic from secondary adaptational processes. Depression and Anxiety. 14(2). 105–111. 5 indexed citations
16.
Chengappa, K. N. Roy, et al.. (2001). Long-term effects of topiramate on bipolar mood instability, weight change and glycemic control: a case-series. European Psychiatry. 16(3). 186–190. 62 indexed citations
17.
Tohen, Mauricio, T.M. Sanger, Susan L. McElroy, et al.. (1999). Olanzapine Versus Placebo in the Treatment of Acute Mania. American Journal of Psychiatry. 156(5). 702–709. 443 indexed citations
18.
Brar, Jaspreet S., et al.. (1997). The effects of clozapine on negative symptoms in patients with schizophrenia with minimal positive symptoms.. Annals of Clinical Psychiatry. 9(4). 227–234. 26 indexed citations
19.
Chengappa, K. N. Roy, et al.. (1995). Assessment of Changes in Both Weight and Frequency of Use of Medications for the Treatment of Gastrointestinal Symptoms Among Clozapine-Treated Patients. Annals of Clinical Psychiatry. 7(3). 119–125. 17 indexed citations
20.
Ganguli, Rohan, et al.. (1992). Altered interleukin-2 production in schizophrenia: Association between clinical state and autoantibody production. Psychiatry Research. 44(2). 113–123. 59 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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