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Paper Abstract and Keywords
Presentation 2015-05-20 15:40
A Preliminary Study on the Discrimination of Bipolar Disorder from Depression Using Intraday Activity Patterns
Kumiko Kokubo (O. E. C. Univ.), Tsunehiko Tanaka (Shiga Univ. of Med.), Kazunori Iwasa (Shujitsu Univ.), Kosuke Sawa (Senshu Univ.), Masashi Komori (O. E. C. Univ.) HCS2015-39 HIP2015-39
Abstract (in Japanese) (See Japanese page) 
(in English) Physical activity has been associated with mental health. The present study investigated the relationship between intraday physical activity and mood disorders. Inpatients (N = 115) with major depression or bipolar disorder provided their 2-week activity log data as measured by accelerometers. Each 2-week data block was divided into 1-day-long sections. We performed a Fourier series expansion on the activity levels for each section and performed a PCA on the coefficients of the Fourier series expansion. The principal component scores (1st–5th) were entered into the logistic regression analysis as predictor variables. The discriminative ability of the model was expressed as an ROC area under the curve (AUC). The ROC AUC of the model was 0.75 for the discernment between major depression and bipolar disorder, suggesting that intraday changes in the level of physical activity can be used as discriminators between different types of mood disorders.
Keyword (in Japanese) (See Japanese page) 
(in English) Mood Disorder / Physical Activity / Data Log / / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 36, HIP2015-39, pp. 255-258, May 2015.
Paper # HIP2015-39 
Date of Issue 2015-05-12 (HCS, HIP) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF HCS2015-39 HIP2015-39

Conference Information
Committee HCS HIP HI-SIGCOASTER  
Conference Date 2015-05-19 - 2015-05-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa Industry Support Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Communication Enhancing, Human Communications, and Human Information Processing 
Paper Information
Registration To HIP 
Conference Code 2015-05-HCS-HIP-SIGCE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Preliminary Study on the Discrimination of Bipolar Disorder from Depression Using Intraday Activity Patterns 
Sub Title (in English)  
Keyword(1) Mood Disorder  
Keyword(2) Physical Activity  
Keyword(3) Data Log  
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1st Author's Name Kumiko Kokubo  
1st Author's Affiliation Osaka Electro-Communication University (O. E. C. Univ.)
2nd Author's Name Tsunehiko Tanaka  
2nd Author's Affiliation Shiga University of Medical Science (Shiga Univ. of Med.)
3rd Author's Name Kazunori Iwasa  
3rd Author's Affiliation Shujitsu University (Shujitsu Univ.)
4th Author's Name Kosuke Sawa  
4th Author's Affiliation Senshu University (Senshu Univ.)
5th Author's Name Masashi Komori  
5th Author's Affiliation Osaka Electro-Communication University (O. E. C. Univ.)
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Speaker Author-1 
Date Time 2015-05-20 15:40:00 
Presentation Time 25 minutes 
Registration for HIP 
Paper # HCS2015-39, HIP2015-39 
Volume (vol) vol.115 
Number (no) no.35(HCS), no.36(HIP) 
Page pp.255-258 
#Pages 4 
Date of Issue 2015-05-12 (HCS, HIP) 

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