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( Motoyori Kanazawa ),( Shigemi Nakajima ),( Tadayuki Oshima ),( William E Whitehead ),( Ami D Sperber ),( Olafur S Palsson ),( Douglas A Drossman ),( Hiroto Miwa ),( Shin Fukudo ) 대한소화기기능성질환·운동학회 2015 Journal of Neurogastroenterology and Motility (JNM Vol.21 No.4
Background/Aims Reliable diagnostic instruments for measuring the presence of functional gastrointestinal disorders based on the Rome III criteria have been lacking in Japan. The aims of the present study were to translate and validate the Rome III diagnostic questionnaire which was widely used in Western countries. Methods The original version of Rome III diagnostic questionnaire was translated from English into Japanese through 3 independent forward translations, resolution, back translation and reconciliation of the differences. Forty-nine patients with irritable bowel syndrome (IBS), 32 patients with functional dyspepsia (FD) and 56 subjects without any current GI symptoms as controls were recruited from three hospitals located in different regions of Japan and completed the IBS and FD diagnostic modules twice within 14 days. Kappa statistic was used to assess test-retest reliability. The sensitivity and specificity of each diagnostic module for distinguishing IBS or FD patients from controls was tested. Results Median kappa statistics were 0.63 for the translated IBS diagnostic module and 0.68 for the FD module. The sensitivity, specificity, and positive predict value of the IBS module against physician diagnosis was 61.2%, 100%, and 100% and those of the FD module was 53.2%, 98.2%, and 94.4%, respectively. Meanwhile, IBS patients were significantly more likely to report blood in stools compared to controls (18.4% vs 1.8%, P < 0.01). Conclusions The IBS and FD diagnostic modules on the Japanese version of the Rome III diagnostic questionnaire are valid and reliable. Further studies are warranted to elucidate the diagnostic utility of the red flag questionnaire. (J Neurogastroenterol Motil 2015;21:537-544)
The Impact of ASEAN-Korea Free Trade Agreement on Foreign Direct Investment
Ryoma Kanazawa,강문성 한국경제연구학회 2019 Korea and the World Economy Vol.20 No.1
This paper aims to analyze and examine the impact of ASEAN-Korea FTA on FDI flows into Korea and ASEAN countries to verify the economic validity of AKFTA. In order to analyze the impact of AKFTA on FDI, this study employs the knowledge-capital model by considering industrial development stages of countries. This study conducts panel data (2001-2012) analysis to alleviate unobserved heterogeneity and multicollinearity. The results show that the AKFTA 2006 Goods Agreement has a statistically negative effect on FDI in the member countries, while the AKFTA 2009 Investment Agreement has a positive impact on FDI in the member countries.
Toshiya Kanazawa,Takashi Zaitsu,Masayuki Ueno,Yoko Kawaguchi 대한예방치과학회 2019 International Journal of Clinical Preventive Denti Vol.15 No.1
Objective: This study aimed to investigate the factors associated with masticatory performance, as measured with a chewing gum containing spherical resinous microparticles, and to evaluate the method by examining the relationship with self-reported masticatory status. Methods: The participants in this study comprised 903 industrial workers (mean age, 42.2±11.6 years). A questionnaire was administered to assess self-reported masticatory status. The masticatory performance score was calculated by counting the number of particles in the chewing gum. Clinical oral examinations were administered. Multiple linear regression analysis was conducted on the masticatory performance scores to examine the related factors. Analysis of covariance was conducted to investigate the association between the masticatory performance score and the self-reported masticatory status. Results: Significant predictors of the masticatory performance score were sex (p<0.001), age (p<0.001), decayed teeth (p=0.009), total-functional tooth units (p<0.001), periodontitis (p=0.003), and malocclusion (p=0.011). The relationship between the masticatory performance score and the self-reported masticatory status was attenuated after controlling for confounding factors. Conclusion: The masticatory performance increased with age and decreased as the oral health status worsened. Using this chewing gum method partly, but not comprehensively, reflects masticatory performance. Therefore, various masticatory performance- related indexes should be employed to measure masticatory performance accurately