Faculty Profiles - Masahide Koda

Papers - Masahide Koda

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Facilitators and barriers in implementing the nurse practitioner role in Japan: A cross‐sectional descriptive study Reviewed International journal

Miho Suzuki, Nahoko Harada, Kazuya Honda, Masahide Koda, Tomoko Araki, Takemi Kudo, Takao Watanabe

International Nursing Review 2022.7

Language：English Publishing type：Research paper (scientific journal) Publisher：Wiley

AIM: To investigate the distribution of nurse practitioners (NPs) across Japan and their perceived facilitators and barriers to NP implementation in Japan. BACKGROUND: NP certification examinations have been conducted in Japan since 2011, and by 2020, there were 487 NPs in the country. The momentum of NP implementation is slower in Japan compared with other countries. METHODS: A cross-sectional descriptive study, following the STROBE guidelines, was conducted. Web-based survey questionnaires, developed by the authors, were administered to 248 NPs whose email addresses were maintained by the certification management body. RESULTS: Valid responses were obtained from 101 NPs (response rate: 40.7%), of which 34% were male. The respondents had more than 12 years of registered nurse experience on an average before enrolling in the graduate NP program. 53% were employed as NPs from the beginning, while 25% were initially employed as registered nurses and later advanced to NPs, and 11% still worked as RNs. A majority worked in hospitals with beds. Many NPs perceived the lack of NP national licensure and reimbursement benefits as barriers to NP implementation, whereas recognition from superiors and organizations was considered facilitators. CONCLUSIONS: Despite their small numbers in Japan, NPs take on crucial tasks and contribute to the appropriate distribution of medical resources. The NP licensure system and recognition from superiors and organizations may be necessary to promote NP roles in Japan. IMPLICATIONS FOR NURSING AND HEALTH POLICY: Some certified NPs still work as registered nurses. Recognition from nursing and organization administrators is critical to implementing NPs. To this end, a reimbursement system benefiting the organizations and a legislation facilitating NP employment are required.

DOI： 10.1111/inr.12790

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Other Link： https://onlinelibrary.wiley.com/doi/full-xml/10.1111/inr.12790

The Differences in Attitude Toward Mental Health Services Between Japanese and American College Students Reviewed

Noriko Yamamoto, Takeshi Sato, Yusaku Omodaka, Hisae Matsuo, Suguru Hasuzawa, Masahide Koda, Niwako Yamawaki

Asian Social Science 18 ( 5 ) 23 - 23 2022.4

Publishing type：Research paper (scientific journal) Publisher：Canadian Center of Science and Education

To examine the different patterns in utilization of psychological services between Japanese and American college students, a total of 316 American students (122 men and 194 women) and 362 Japanese students (147 men and 215 women) participated in this study. We used the following psychological instruments: Attitude Toward Seeking Professional Psychological Help scale, Interpersonal Openness (openness regarding professional psychological help) and Confidence Self-construal scale, Sex Role Inventory, and Recognition of Psychological Help. This study concluded that collectivism is a significant predictor of recognizing the need for mental health services in the U.S., while it is not in Japan. Compared to American and female participants, Japanese and male participants feel greater stigmas toward mental health professionals. Openness to psychological help collectivism was a significant predictor for openness among the American sample, while it was not in the Japanese sample. Collectivism was a significant predictor for openness among the American sample, while it was not in the Japanese sample. Individualism was a significant predictor for confidence in America, but it was not in Japan. As predicted, Japanese participants feel greater stigma and less recognition, openness, and confidence toward mental health services than Americans. It is important for mental health professionals to educate college students that individual who seek help have high masculine traits to ameliorate the negative attitude toward mental health professionals.

DOI： 10.5539/ass.v18n5p23

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Publication rates in English of abstracts presented at the annual meeting of the Japanese Society of Psychiatry and Neurology Reviewed International journal

Kazunari Yoshida, Sho Moriguchi, Masahide Koda, Takuya Oka, Fumihiko Ueno, Saeko Ikai‐Tani, Hideaki Tani, Masaru Mimura

Psychiatry and Clinical Neurosciences 76 ( 6 ) 206 - 211 2022.4

Language：English Publishing type：Research paper (scientific journal) Publisher：Wiley

BACKGROUND: Relatively low publication rates of abstracts presented at scientific meetings (i.e., 37.3%, 95% CI: 35.3-39.3) have been reported across various fields worldwide. However, no study has investigated the publication rate of abstracts presented at psychiatric meetings and factors associated with full publication in Japan. This study aimed to determine the proportion of conference abstracts in the psychiatric field that reach full publication in English and its associated factors in Japan. METHODS: A retrospective study was conducted to determine the publication rate of abstracts presented at the annual meetings of the Japanese Society of Psychiatry and Neurology (JSPN) in 2013 and 2014, the largest psychiatric meeting in Japan, by searching for full-text publications in PubMed and Google Scholar. Furthermore, we examined factors associated with a successful full publication of the conference abstract. RESULTS: Of the 737 abstracts evaluated, 132 (17.9%) were published in peer-reviewed journals; the publication rates for oral and poster presentations were 12.7% (46/363) and 23.0% (86/374), respectively. In multivariate logistic regression analyses, the following factors were significantly associated with successful publications: poster presentations (odds ratio [OR]: 1.67, 95% CI: 1.10-2.57), original studies (OR: 4.16, 95% CI: 2.44-7.47), and academic institutions (OR: 5.77, 95% CI: 3.44-10.19). CONCLUSIONS: The publication rate in English of the conference abstracts presented at the JSPN annual meetings was relatively lower than those in previous studies. Further encouragement of the publication of the abstracts presented in psychiatric conferences in Japan would be helpful in disseminating scientific findings in the field of psychiatry. This article is protected by copyright. All rights reserved.

DOI： 10.1111/pcn.13351

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Other Link： https://onlinelibrary.wiley.com/doi/full-xml/10.1111/pcn.13351

宮崎大学医学部附属病院における自殺企画症例の検討 - 老年期症例の特徴 - Reviewed

日髙弘登, 三好良英, 古郷央一郎, 治田彩香, 宮原裕, 香田将英, 久保浩明, 落合秀信, 石田康

宮崎医会誌 46 68 - 73 2022.3

Reasons for Suicide During the COVID-19 Pandemic in Japan Reviewed

Masahide Koda, Nahoko Harada, Akifumi Eguchi, Shuhei Nomura, Yasushi Ishida

JAMA Network Open 5 ( 1 ) e2145870 - e2145870 2022.1

自殺対策のための実用的な地域診断指標の開発：ソーシャル・キャピタルと自殺死亡率の関連における再現性検証 Reviewed

髙橋聡, 近藤克則, 中村恒穂, 鄭丞媛, 井手一茂, 香田将英, 尾島俊之

自殺総合政策研究 3 ( 2 ) 11 - 20 2021.6

GIS Mapping Analysis of Damages and Countermeasures Against the Nankai Trough Earthquake among Primary Care Facilities in Miyazaki Reviewed

Nahoko Harada, Masahide Koda, Toshiaki Saito, Hisashi Yoshimoto, Atsushi Obata

An Official Journal of the Japan Primary Care Association 44 ( 1 ) 2 - 10 2021.3

Correction to: Association between NAT2, CYP1A1, and CYP1A2 genotypes, heterocyclic aromatic amines, and prostate cancer risk: a case control study in Japan. Reviewed

Koda M, Iwasaki M, Yamano Y, Lu X, Katoh T

Environmental health and preventive medicine 23 ( 1 ) 30 2018.7

Association between NAT2, CYP1A1, and CYP1A2 genotypes, heterocyclic aromatic amines, and prostate cancer risk: a case control study in Japan Reviewed

Masahide Koda, Motoki Iwasaki, Yuko Yamano, Xi Lu, Takahiko Katoh

Environmental Health and Preventive Medicine 22 ( 1 ) 72 2017.8

Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：SPRINGER

Background: Heterocyclic aromatic amines (HAAs) may confer prostate cancer risk; however, the evidence is inconclusive and the activity of HAA-metabolizing enzymes is modulated by gene variants. The purpose of our study was to determine whether there was evidence of an association between HAA intake, polymorphisms in NAT2, CYP1A1, and CYP1A2 and prostate cancer risk in Japanese men.
Methods: Secondary data analysis of an observational case control study was performed. Among 750 patients with prostate cancer and 870 healthy controls, 351 cases and 351 age-matched controls were enrolled for analysis. HAA intake was estimated using a food frequency questionnaire and genotypes were scored by TaqMan real-time PCR assay. Logistic regression analysis was conducted according to affected/control status.
Results: We found that high HAA intake was significantly associated with an increased risk of prostate cancer (odds ratio (OR), 1.90; 95% confidence interval (95% CI), 1.40-2.59). The increased risk of prostate cancer was observed among individuals with the NAT2 slow acetylator phenotype (OR, 1.65; 95% CI, 1.04-2.61), CYP1A1 GA + GG genotype (OR, 1.27; 95% CI, 1.02-1.59), and CYP1A2 CA + AA genotype (OR, 1.43; 95% CI, 1.03-2.00). In addition, CYP1A1 GA + GG genotypes were associated with increased cancer risk in low (OR, 2.05; 95% CI, 1.19-3.63), moderate (OR, 1.72; 95% CI, 1.07-2.76), and high (OR, 2.86; 95% CI, 1.83-4.47) HAA intake groups.
Conclusions: Our results suggest that high HAA intake is a risk factor of prostate cancer, and genotypes related to HAA metabolic enzymes can modulate the degree of the risk.

DOI： 10.1186/s12199-017-0681-0

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Associations between estrogen receptor genetic polymorphisms, smoking status, and prostate cancer risk: a case-control study in Japanese men Reviewed

Xi Lu, Yuko Yamano, Hiroyuki Takahashi, Masahide Koda, Yuki Fujiwara, Aya Hisada, Wataru Miyazaki, Takahiko Katoh

Environmental Health and Preventive Medicine 20 ( 5 ) 332 - 337 2015.9

Language：English Publishing type：Research paper (scientific journal) Publisher：SPRINGER

Prostate cancer (PCa) is one of the major causes of death among men. Our study investigated the association of ESR1 and ESR2 genotypes with susceptibility to PCa in relation to smoking status in Japanese.
A case-control study was performed with 750 Japanese prostate cancer patients and 870 healthy controls. After age-matching in case-controls, 352 controls and 352 cases were enrolled in this study. By using logistic regression analysis, the different genotypes from ESR1 and ESR2 were analyzed according to case/control status.
ESR2 rs4986938 AG and AG + AA genotypes were associated with significantly decreased risk of PCa (AG: OR = 0.68, 95 % CI 0.47-0.97, P < 0.05 and AG + AA: OR = 0.67, 95 % CI 0.47-0.94, P < 0.05). However, there was no significant association between ESR1 rs2234693 and PCa risk. When patients were grouped according to smoking status, the ESR2 rs1256049 AA genotype (OR = 0.48, 95 % CI 0.25-0.95, P < 0.05) and ESR2 rs4986938 AG + AA genotype (OR = 0.64, 95 % CI 0.41-1.00, P < 0.05) showed significantly decreased PCa risk in the ever-smoker group.
Our results suggest that the estrogen receptor ESR2 has a very important function to predict PCa and that different SNPs have different predictive values. Smoking may influence estrogenic activity and may influence PCa together with the estrogen receptor.

DOI： 10.1007/s12199-015-0471-5

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