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November 26, 2013; 81 (22) Article

Bilingualism delays age at onset of dementia, independent of education and immigration status

Suvarna Alladi, Thomas H. Bak, Vasanta Duggirala, Bapiraju Surampudi, Mekala Shailaja, Anuj Kumar Shukla, Jaydip Ray Chaudhuri, Subhash Kaul
First published November 6, 2013, DOI: https://doi.org/10.1212/01.wnl.0000436620.33155.a4
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Article Information

vol. 81 no. 22 1938-1944
DOI: 
https://doi.org/10.1212/01.wnl.0000436620.33155.a4
PubMed: 
24198291
Published By: 
Wolters Kluwer Health, Inc. on behalf of the American Academy of Neurology
Print ISSN: 
0028-3878
Online ISSN: 
1526-632X
History: 
  • Received June 4, 2013
  • Accepted in final form August 26, 2013
  • First Published November 6, 2013.

Article Versions

Copyright & Usage: 
© 2013 American Academy of Neurology

Author Disclosures

    1. Suvarna Alladi, DM,
    2. Thomas H. Bak, MD,
    3. Vasanta Duggirala, PhD,
    4. Bapiraju Surampudi, PhD,
    5. Mekala Shailaja, MA,
    6. Anuj Kumar Shukla, MPhil,
    7. Jaydip Ray Chaudhuri, DM and
    8. Subhash Kaul, DM
  1. Suvarna Alladi, DM,
    2. Scientific Advisory Boards:

    1. NONE

    Gifts:

    1. NONE

    Funding for Travel or Speaker Honoraria:

    1. NONE

    Editorial Boards:

    1. (1) International Journal of Alzheimer�s Disease, Guest Editor, 2012.

    Patents:

    1. NONE

    Publishing Royalties:

    1. NONE

    Employment, Commercial Entity:

    1. NONE

    Consultancies:

    1. NONE

    Speakers' Bureaus:

    1. NONE

    Other Activities:

    1. NONE

    Clinical Procedures or Imaging Studies:

    1. NONE

    Research Support, Commercial Entities:

    1. NONE

    Research Support, Government Entities:

    1. (1)Department of Science and Technology-Govt of India, DST No: SR/CSI/43/2008,Principal Investigator, 2009-2013. (2)Department of Science and Technology-Govt of India, DST No: SR/CSI/13/2008,Principal Investigator, 2010-2013 (3)Indian Council for Medical Research National Task Grant, No.SWG/Neuro/27/2012-NCD-I, Principal Investigator, 2012-2014

    Research Support, Academic Entities:

    1. NONE

    Research Support, Foundations and Societies:

    1. NONE

    Stock/Stock Options/Board of Directors Compensation:

    1. NONE

    License Fee Payments, Technology or Inventions:

    1. NONE

    Royalty Payments, Technology or Inventions:

    1. NONE

    Stock/Stock Options, Research Sponsor:

    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:

    1. NONE

    Legal Proceedings:

    1. NONE

  2. Thomas H. Bak, MD,
    3. Scientific Advisory Boards:

    1. NONE

    Gifts:

    1. NONE

    Funding for Travel or Speaker Honoraria:

    1. NONE

    Editorial Boards:

    1. Associate Editor of ALS FTD Journal (since January 2013). Member of Editorial Board of Behavioural Neurology (since 2008) and Aphasiology (since 2012). No compensations receieved

    Patents:

    1. NONE

    Publishing Royalties:

    1. NONE

    Employment, Commercial Entity:

    1. NONE

    Consultancies:

    1. NONE

    Speakers' Bureaus:

    1. NONE

    Other Activities:

    1. NONE

    Clinical Procedures or Imaging Studies:

    1. NONE

    Research Support, Commercial Entities:

    1. NONE

    Research Support, Government Entities:

    1. NONE

    Research Support, Academic Entities:

    1. NONE

    Research Support, Foundations and Societies:

    1. NONE

    Stock/Stock Options/Board of Directors Compensation:

    1. NONE

    License Fee Payments, Technology or Inventions:

    1. NONE

    Royalty Payments, Technology or Inventions:

    1. NONE

    Stock/Stock Options, Research Sponsor:

    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:

    1. NONE

    Legal Proceedings:

    1. NONE

  3. Vasanta Duggirala, PhD,
    4. Scientific Advisory Boards:

    1. NONE

    Gifts:

    1. NONE

    Funding for Travel or Speaker Honoraria:

    1. NONE

    Editorial Boards:

    1. NONE

    Patents:

    1. NONE

    Publishing Royalties:

    1. NONE

    Employment, Commercial Entity:

    1. NONE

    Consultancies:

    1. NONE

    Speakers' Bureaus:

    1. NONE

    Other Activities:

    1. NONE

    Clinical Procedures or Imaging Studies:

    1. NONE

    Research Support, Commercial Entities:

    1. NONE

    Research Support, Government Entities:

    1. (1)Department of Science and Technology, DST.No.SR/CSI/43/2008, Principal Investigator,2009- 2012

    Research Support, Academic Entities:

    1. NONE

    Research Support, Foundations and Societies:

    1. NONE

    Stock/Stock Options/Board of Directors Compensation:

    1. NONE

    License Fee Payments, Technology or Inventions:

    1. NONE

    Royalty Payments, Technology or Inventions:

    1. NONE

    Stock/Stock Options, Research Sponsor:

    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:

    1. NONE

    Legal Proceedings:

    1. NONE

  4. Bapiraju Surampudi, PhD,
    5. Scientific Advisory Boards:

    1. NONE

    Gifts:

    1. NONE

    Funding for Travel or Speaker Honoraria:

    1. NONE

    Editorial Boards:

    1. International Journal of Mind, Brain & Cognition, Editorial board member, 2011-13.

    Patents:

    1. NONE

    Publishing Royalties:

    1. NONE

    Employment, Commercial Entity:

    1. NONE

    Consultancies:

    1. NONE

    Speakers' Bureaus:

    1. NONE

    Other Activities:

    1. NONE

    Clinical Procedures or Imaging Studies:

    1. NONE

    Research Support, Commercial Entities:

    1. NONE

    Research Support, Government Entities:

    1. Department of Science and Technology-Govt of India, DST No: SR/CSI/43/2008,Principal Investigator, 2009-2013

    Research Support, Academic Entities:

    1. NONE

    Research Support, Foundations and Societies:

    1. NONE

    Stock/Stock Options/Board of Directors Compensation:

    1. NONE

    License Fee Payments, Technology or Inventions:

    1. NONE

    Royalty Payments, Technology or Inventions:

    1. NONE

    Stock/Stock Options, Research Sponsor:

    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:

    1. NONE

    Legal Proceedings:

    1. NONE

  5. Mekala Shailaja, MA,
    6. Scientific Advisory Boards:

    1. NONE

    Gifts:

    1. NONE

    Funding for Travel or Speaker Honoraria:

    1. NONE

    Editorial Boards:

    1. NONE

    Patents:

    1. NONE

    Publishing Royalties:

    1. NONE

    Employment, Commercial Entity:

    1. NONE

    Consultancies:

    1. NONE

    Speakers' Bureaus:

    1. NONE

    Other Activities:

    1. NONE

    Clinical Procedures or Imaging Studies:

    1. NONE

    Research Support, Commercial Entities:

    1. NONE

    Research Support, Government Entities:

    1. 1. Department of Science and Technology-Govt of India, DST No: SR/CSI/13/2008,Research Fellow, 2010-2013

    Research Support, Academic Entities:

    1. NONE

    Research Support, Foundations and Societies:

    1. NONE

    Stock/Stock Options/Board of Directors Compensation:

    1. NONE

    License Fee Payments, Technology or Inventions:

    1. NONE

    Royalty Payments, Technology or Inventions:

    1. NONE

    Stock/Stock Options, Research Sponsor:

    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:

    1. NONE

    Legal Proceedings:

    1. NONE

  6. Anuj Kumar Shukla, MPhil,
    7. Scientific Advisory Boards:

    1. NONE

    Gifts:

    1. NONE

    Funding for Travel or Speaker Honoraria:

    1. NONE

    Editorial Boards:

    1. NONE

    Patents:

    1. NONE

    Publishing Royalties:

    1. NONE

    Employment, Commercial Entity:

    1. NONE

    Consultancies:

    1. NONE

    Speakers' Bureaus:

    1. NONE

    Other Activities:

    1. NONE

    Clinical Procedures or Imaging Studies:

    1. NONE

    Research Support, Commercial Entities:

    1. NONE

    Research Support, Government Entities:

    1. Department of Science and Technology-Govt of India, DST No: SR/CSI/43/2008,Research Fellow, 2009-2013

    Research Support, Academic Entities:

    1. NONE

    Research Support, Foundations and Societies:

    1. NONE

    Stock/Stock Options/Board of Directors Compensation:

    1. NONE

    License Fee Payments, Technology or Inventions:

    1. NONE

    Royalty Payments, Technology or Inventions:

    1. NONE

    Stock/Stock Options, Research Sponsor:

    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:

    1. NONE

    Legal Proceedings:

    1. NONE

  7. Jaydip Ray Chaudhuri, DM and
    8. Scientific Advisory Boards:

    1. NONE

    Gifts:

    1. NONE

    Funding for Travel or Speaker Honoraria:

    1. (1)Pfizer Inc,Funding for travel to conference

    Editorial Boards:

    1. NONE

    Patents:

    1. NONE

    Publishing Royalties:

    1. NONE

    Employment, Commercial Entity:

    1. NONE

    Consultancies:

    1. NONE

    Speakers' Bureaus:

    1. NONE

    Other Activities:

    1. NONE

    Clinical Procedures or Imaging Studies:

    1. NONE

    Research Support, Commercial Entities:

    1. NONE

    Research Support, Government Entities:

    1. NONE

    Research Support, Academic Entities:

    1. NONE

    Research Support, Foundations and Societies:

    1. NONE

    Stock/Stock Options/Board of Directors Compensation:

    1. NONE

    License Fee Payments, Technology or Inventions:

    1. NONE

    Royalty Payments, Technology or Inventions:

    1. NONE

    Stock/Stock Options, Research Sponsor:

    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:

    1. NONE

    Legal Proceedings:

    1. NONE

  8. Subhash Kaul, DM
    9. Scientific Advisory Boards:

    1. NONE

    Gifts:

    1. NONE

    Funding for Travel or Speaker Honoraria:

    1. NONE

    Editorial Boards:

    1. NONE

    Patents:

    1. NONE

    Publishing Royalties:

    1. NONE

    Employment, Commercial Entity:

    1. NONE

    Consultancies:

    1. NONE

    Speakers' Bureaus:

    1. NONE

    Other Activities:

    1. NONE

    Clinical Procedures or Imaging Studies:

    1. NONE

    Research Support, Commercial Entities:

    1. NONE

    Research Support, Government Entities:

    1. NONE

    Research Support, Academic Entities:

    1. NONE

    Research Support, Foundations and Societies:

    1. NONE

    Stock/Stock Options/Board of Directors Compensation:

    1. NONE

    License Fee Payments, Technology or Inventions:

    1. NONE

    Royalty Payments, Technology or Inventions:

    1. NONE

    Stock/Stock Options, Research Sponsor:

    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:

    1. NONE

    Legal Proceedings:

    1. NONE

  1. From the Department of Neurology (S.A., M.S., A.K.S., S.K.), Nizam's Institute of Medical Sciences, Hyderabad, India; Department of Psychology (T.H.B.), Centre for Cognitive Aging and Cognitive Epidemiology and Centre for Clinical Brain Sciences, University of Edinburgh, UK; Department of Linguistics (V.D.), Osmania University, Hyderabad; Centre for Neural and Cognitive Sciences (B.S.), University of Hyderabad; and Department of Neurology (J.R.C.), Yashoda Hospitals, Hyderabad, India.
  1. Correspondence to Dr. Alladi: alladisuvarna{at}hotmail.com
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