Development and evaluation of an electromagnetic hypersensitivity questionnaire for Japanese people.
Bioelectromagnetics. 2016 Jun 21. doi: 10.1002/bem.21987. [Epub ahead of print]
PMID: 27324106 [PubMed – as supplied by publisher]
Hojo S1,2,3, Tokiya M4, Mizuki M5, Miyata M6, Kanatani KT7, Takagi A8, Tsurikisawa N2, Kame S9, Katoh T10, Tsujiuchi T1,11, Kumano H1,11.
Author information: 1Institute of Applied Brain Sciences, Waseda University, Tokorozawa, Japan.2Department of Allergy and Respirology, and Clinical Research Center for Allergy and Rheumatology, National Hospital Organization, Sagamihara National Hospital, Sagamihara, Japan.3Shokei Gakuin University, Natori, Japan.4Faculty of Medicine, Department of Public Health and Epidemiology, Oita University, Oita, Japan.5Department of Respiratory Medicine and Allergy, National Hospital Organization, Morioka National Hospital, Morioka, Japan.6Clinic of Enviromental Medicine Soyokaze Tokyo, Tokyo, Japan.7 Department of Health Informatics, Kyoto University School of Public Health, Kyoto, Japan.8Division of Biostatistics, Tohoku University Hospital Clinic Research Data Center, Sendai, Japan.9Kansai University of Health Sciences, Osaka, Japan.10Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan.11Faculty of Human Sciences, Waseda University, Tokorozawa, Japan.
The purpose of the present study was to evaluate the validity and reliability of a Japanese version of an electromagnetic hypersensitivity (EHS) questionnaire, originally developed by Eltiti et al. in the United Kingdom. Using this Japanese EHS questionnaire, surveys were conducted on 1306 controls and 127 self-selected EHS subjects in Japan. Principal component analysis of controls revealed eight principal symptom groups, namely, nervous, skin-related, head-related, auditory and vestibular, musculoskeletal, allergy-related, sensory, and heart/chest-related. The reliability of the Japanese EHS questionnaire was confirmed by high to moderate intraclass correlation coefficients in a test-retest analysis, and high Cronbach’s α coefficients (0.853-0.953) from each subscale. A comparison of scores of each subscale between self-selected EHS subjects and age- and sex-matched controls using bivariate logistic regression analysis, Mann-Whitney U- and χ2 tests, verified the validity of the questionnaire. This study demonstrated that the Japanese EHS questionnaire is reliable and valid, and can be used for surveillance of EHS individuals in Japan. Furthermore, based on multiple logistic regression and receiver operating characteristic analyses, we propose specific preliminary criteria for screening EHS individuals in Japan. Bioelectromagnetics. © 2016 The Authors. Bioelectromagnetics Published by Wiley Periodicals, Inc.
© 2016 The Authors. Bioelectromagnetics Published by Wiley Periodicals, Inc.