Research activity information

• 変形性関節症患者の手術治療と保存療法における，医療費，QOLと介護度

  上杉 裕子, 林 申也, 松本 知之, 山岡 淳, 藤岡 秀英, 西井 孝

  目的：高齢者の運動器障害疾患の罹患率は高く，下肢関節疾患は要介護の原因の上位を占めている。手術療法は疼痛や歩行機能改善への有効性が示されているが，高齢患者でのQOL改善や医療費経済効果の術後継続性は明らかでない。本研究では変形性膝・股関節症患者の関節手術療法5年以上経過後の医療費，QOL，介護状況を，保存療法継続患者と比較し明らかとすることを目的とした。 方法：対象者はA病院整形外科外来を受診した80歳から85歳までの変形性膝関節症，変形性股関節症患者とし，5年以上前に手術をした手術療法群（14名）と保存療法継続群（13名）を対象とした。最新2年間の患者医療費，患者QOL（SF-8），介護保険の利用状況の比較検討を行った。 結果：手術療法群の42.9％，保存療法群の15.4％が独歩可能であり，介護保険の利用は手術療法群で57.1％，保存療法群で69.2％であった。QOLスコアは手術療法群が保存療法群より有意に良く，最新2年間の年間医療費も手術療法群が低い結果であった。 考察：術後5年以上経過した手術療法群のQOLは保存療法群より良く，医療費も低かったことより，手術治療により数年間の高齢者の健康改善効果が継続する可能性が示唆された。

  日本関節病学会, 2024, 日本関節病学会誌, 43(3) (3), 325 - 330, Japanese


• The Effects of Participating in Community Events on Health in the Mountainous Area: Empirical Research Based on Questionnaire for Inhabitants in Yamanouchi Area, Himeji, Hyogo

  KINUGASA Tomoko, TOYOZAWA Kei, FUJIOKA Yoshihide, YAMAOKA Atsushi, TAMURA Minoru

  In Japan mountainous areas’ population aging is more pronounced than in urban areas. Therefore, supporting community sustainability through health maintenance is critical. This study examines whether participating in community events leads to subjective health. We focused on the Yamanouchi area of Yumesaki-cho, Himeji City, Hyogo Prefecture, which is mountainous area and where population aging and depopulation is serious. With the theme of “town development for longevity and health,” multiple universities are participating in practical research projects in this area, such as a new health checkup, “Health Checkup Project through adding points to Goodness in Daily Life.” We hypothesized that joining community events actively and concerning to have connections with people outside their area, such as university students, lead good health. In 2019 and 2021, we conducted questionnaire surveys targeting all households in the Yamanouchi area and clarified the effects of joining community events and knowing local events related to university students on subjective health. We consider the endogeneity of variables related to events and conducted empirical analysis based on extended ordered probit model. Our empirical results supported our hypothesis. We found that inhabitants who join more community events or those who know of more events with university students tend to evaluate their health more favorably, and the effects were statistically significant. Thus, we deduce that actively planning community events will be beneficial for inhabitants’ health in the area. In addition, it is possible that university students’ participation in community development is effective for inhabitants’ health. In the mountainous areas where the population is decreasing, continuing community events could prove difficult, but it would be important to consider their impact on health and encourage various events as far as possible.

  Population Association of Japan, 2023, The Journal of Population Studies, 59, 24 - 40, Japanese

  [Refereed]


• Practice Report of "Novel Health Check-Up Providing Positive Feedback" in Collaboration with ''Yumesaki-Hanakaido Projects"

  Fujioka Yoshihide, Kinugasa Tomoko, Yamaoka Atsushi, Tamura Minoru

  神戸大学経済経営学会, Feb. 2022, 国民経済雑誌, 225(2) (2), 79 - 92, Japanese

  Link to Kobe Univ. Repository (Kernel)


• Comprehensive Geriatric Assessment Using the Yoitoko Check-Up, a Novel Health Check-Up Providing Positive Feedback to Older Adults: A Before-After Study.

  Shinsuke Yahata, Minoru Tamura, Atsushi Yamaoka, Yoshihide Fujioka, Masanobu Okayama

  Purpose: The Yoitoko check-up, a novel health check-up providing positive feedback, has been developed to promote health among older adults, and consists of several comprehensive geriatric assessment items. This report aimed to describe the details of the Yoitoko check-up and to explore the future possibility of the check-up by evaluating the participants' short-term behavioral changes in terms of comprehensive functioning, using a before-after study design. Patients and Methods: Four Yoitoko check-ups were conducted, at 3-month intervals, between December 2018 and September 2019. Study participants aged ≥65 years included those who had undergone ≥2 Yoitoko check-ups. The results of each visit after the second check-ups were retrospectively compared with those of the baseline, and the mean changes and the odds ratios were calculated using a paired t-test or a McNemar test, respectively. Results: Of 84 participants, the results of 16 (19.0%) participants were analyzed. The mean (standard deviation) age was 75.3 (4.7) years. The mean Tokyo Metropolitan Institute of Gerontology Index of Competence score, a measure of high-level functional capacity, increased 0.9 (95% confidence interval; range, 0.2-1.5) points between the first and second visits. Conclusion: We developed the Yoitoko check-up and introduced the details of it. Our study findings suggested that the Yoitoko check-up may further motivate older adults to improve their health and promote positive behavioral changes. Future studies are needed to evaluate the effectiveness of this novel assessment method.

  2021, International journal of general medicine, 14, 2589 - 2598, English, International magazine

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Practical Research on Regional Promotion in Rural Mountain Villages by Industry-Academia Collaboration

  山岡 淳, 田村 穂, 衣笠 智子, 藤岡 秀英

  今日の日本では地方創生を掲げ中央政府や地方自治体，そして集落レベルでの様々な地域振興が行われている。本研究は中山間の限界集落である姫路市夢前町山之内地区を対象とした。全戸アンケート調査と集落訪問調査を行ったうえで，当該地域における現在までの経済社会の変遷，現在の人口構成から考えられる将来の地域課題，民間事業者が中心となって行っている「夢前花街道事業」の成果，こうした課題や活動を反映したうえでの地域住民による山之内地区の将来の展望を示した。

  神戸大学経済経営学会, Oct. 2020, 国民経済雑誌, 222(4) (4), 43 - 58, Japanese

  Link to Kobe Univ. Repository (Kernel)


• Research on the Search for the Possibility of International Statistical Reporting in the Field of Health, Labour and Welfare Statistics using Current Official Statistics

  MITSUTAKE NAOHIRO, ISHIKAWA TOMOKI, SAKAI MICHI, TANAKA SHIGERU, FUKUDA TAKASHI, YAMAOKA ATSUSHI

  1. 研究目的

  本研究は日本の保健医療指標の提出数の増加を目的として，未報告の保健医療指標を調査し，既存の公的統計やレセプト情報・特定健診等情報データベース（NDB）を活用して推計を行う．OECD，WHO，国連等の国際機関は，医療および介護分野における政策立案に資する国際統計報告として様々な保健医療指標の迅速な提供を各国に求めている．各国から提供された国際統計報告は，例えばOECDのOECD.stat^1）から一般公開されているが，日本が国際機関に提出している厚生労働統計分野の項目数は少なく，提出件数を増やすことが望ましい．

  Japan Association for Medical Informatics, 2020, Japan Journal of Medical Informatics, 40(1) (1), 30 - 31, Japanese


• 我々は社会保障に無関心でいられるか

  山岡淳

  Lead, Oct. 2019, 経済学・経営学学習のために, 2019(後期) (後期), 47 - 54


• The Dedicated Emergency Physician Model of emergency care is associated with reduced pre-hospital transportation time: A retrospective study with a nationwide database in Japan.

  Hidenori Higashi, Reo Takaku, Atsushi Yamaoka, Alan Kawarai Lefor, Takashi Shiga

  In Japan, the increasing number of patients needing emergency medical care due to population aging is a major public health problem. Recently, emergency medicine in Japan has seen a growth in the number of Dedicated Emergency Physician Model style departments. We aimed to determine whether there is an association between Dedicated Emergency Physician Model emergency care and pre-hospital transportation time. We conducted a secondary analysis of a Japanese national pre-hospital database from 2010 to 2014. Three regions (group 1: Urayasu city and Ichikawa city in Chiba prefecture, group 2: Kamakura city, Chigasaki city, Fujisawa city and Zushi city in Kanagawa prefecture, and group 3: Fukui city in Fukui prefecture) were evaluated as Dedicated Emergency Physician Model emergency medicine areas. We compared transportation times in these areas with all municipalities in the same prefectures, and with a nearby area using multivariate linear regression with cluster adjustment. The variables used for adjustment are the time from Emergency Medical Services activation to the scene, month, day of the month, day of the week, time of day, age, gender, type of injury, severity, and location of call. Compared with all municipalities in each prefecture there were significant reductions in pre-hospital transportation time: 4.2 minutes (95% confidence interval, 0.9 to 7.5, p<0.05) in Group 1, 6.2 minutes (95%CI, 2.9 to 9.6, p<0.01) fin Group 2 and 7.5 minutes (95%CI, 6.0 to 9.0, p<0.01) in Group 3. Compared with nearby areas, there were statistically significant reductions in transportation time in Group 1, 6.8 minutes (95%CI, 0.7 to 12.8, p<0.05) and in Group 2, 6.8 minutes (95%CI, 3.7 to 9.9, p<0.05). There was a trend for reduced transportation time in Group 3, 2.3 minutes, (5.3 to -0.6, p<0.1). Areas with a Dedicated Emergency Physician Model are associated with reduced pre-hospital transportation time.

  May 2019, PloS one, 14(4) (4), e0215231, English, International magazine

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• 研究部レポート 地域別にみた入院当たりの転院搬送者数

  山岡 淳

  医療経済研究機構, Dec. 2018, Monthly IHEP, (270) (270), 35 - 39, Japanese


• Payment systems and hospital length of stay: a bunching-based evidence

  Reo Takaku, Atsushi Yamaoka

  Springer New York LLC, May 2018, International Journal of Health Economics and Management, 1 - 25, English

  [Refereed]

  Scientific journal


• 研究部レポート 年齢層別に見た救急搬送事例発生の時間帯別特徴

  山岡 淳

  医療経済研究機構, Dec. 2016, Monthly IHEP, (248) (248), 23 - 27, Japanese


• 研究部レポート 二次医療圏域別に見た救急病院の対応状況の経年変化

  山岡 淳

  医療経済研究機構, Oct. 2016, Monthly IHEP, (257) (257), 14 - 17, Japanese


• 介護関連施設における救急事例 (特集 救急車を呼べますか?)

  山岡 淳

  全国社会福祉協議会, Apr. 2016, ふれあいケア, 22(4) (4), 24 - 29, Japanese


• Challenges facing long-term care managers of the elderly living alone enabling them to continue aging in place

  中島 民恵子, 沢村 香苗, 山岡 淳

  国立社会保障・人口問題研究所, 2016, 社会保障研究, 1(1) (1), 183 - 191, Japanese


• The preliminary estimates of Japan's total health expenditure based on the System of Health Accounts

  満武 巨裕, 山岡 淳

  国立社会保障・人口問題研究所, 2016, 社会保障研究, 1(1) (1), 225 - 229, Japanese


• The Financial Problem of Emergency Medical System in Japan

  山岡 淳

  現代書館, 2016, 経済社会学会年報, (38) (38), 109 - 122, Japanese


• “Ageing in Place” policy in Japan: association between the development of an integrated community care system and the number of nursing home placements under the public long-term care insurance program among municipal governments

  Miharu Nakanishi, Sayuri Shimizu, Takashi Murai, Atsushi Yamaoka

  Springer New York LLC, Sep. 2015, Ageing International, 40(3) (3), 248 - 261, English, International magazine

  [Refereed]

  Scientific journal


• 研究部レポート 東日本大震災発生直後の救急搬送数の推移

  山岡 淳

  医療経済研究機構, Feb. 2015, Monthly IHEP, (238) (238), 28 - 32, Japanese


• Analysis of the Regional Difference of Transportation Time by Ambulance

  Yamaoka Atsushi

  IntroductionTransportation time by ambulance is one of the important factor of evaluating emergency medical service. But, the previous researches about the relation of transportation time and socioeconomically condition by district is insufficient.ObjectivesWe estimate an average transportation time and a ratio of daytime to nighttime in a transportation time in each district using various district socioeconomically indicators as independent variables.MethodThe dataset includes 3,538,275(71.9%) emergency patients who used emergency transportation by ambulance in 2011 and 587 districts. The independent variables for each district included a geographical component variable (population density and so on), ratio of transportation to another district, ratio of public hospital to emergency hospital, ratio of emergency patients to population, population aging rate and traffic congestion. We estimate two indicator by these independent variables for OLS.ResultFor the estimated transportation time (Adj.R-Squared = 0.294 P<.001), ratio of transportation to another district (P<.01), population aging rate (P<.01) and traffic congestion (P<.001) showed positive correlations. Geographical component variable (P<.001) and ratio of public hospital (P<.001) showed negative correlations. For the estimated a ratio of daytime to nighttime in a transportation time (Adj.R-Squared = 0.308 P<.001), geographical component variable (P<.001), ratio of transportation to another district (P<.001) and traffic congestion (P<.1) showed positive correlations, while ratio of public hospital (P<.01) showed negative correlations.ConclusionsThe result shows that a transportation time is longer in rural than urban and a ratio of daytime to nighttime in a transportation time is higher in ur ban than rural. These are the geographic subjects in emergency medical system. And, a transportation time and a ratio of daytime to nighttime are more influenced supply side factor rather than demand side. To solve the subjects, supply of emergency medical for elderly people is needed, because elderly people who is one of a cause of the subjects is increasing year by year in Japan.

  経済社会学会, 2015, The Annual of the Society of Economic Sociology, 37(0) (0), 94 - 103, Japanese


• 研究部レポート 救急車利用方法に関する広報活動の効果測定のための課題 (研究会Review 平成26年度 新春特別セミナー第10回記念大会 2025年の医療・介護体制へのチェックポイント : 10周年を迎え次の10年を考える)

  山岡 淳

  医療経済研究機構, May 2014, Monthly IHEP, (230) (230), 40 - 44, Japanese


• 研究部レポート 救急医療体制の構築における医療と消防の役割

  山岡 淳

  医療経済研究機構, Jul. 2013, Monthly IHEP, (221) (221), 20 - 25, Japanese


• Return Migration to "Nature-rich Residential Areas" : Research Results Based on a Partnership between Graduate School of Economics, Kobe University and Taka Town, Hyogo Prefecture

  山岡 淳, 藤岡 秀英, 貴志 匡博, 中川 聡史

  神戸大学経済経営学会, Mar. 2011, 国民経済雑誌, 203(3) (3), 39 - 56, Japanese

  Link to Kobe Univ. Repository (Kernel)


• Rural area's potential for community development policy based on opinion of residents and emigrants in Hyogo Prefecture, Japan

  山岡 淳

  兵庫地理学協会, 2011, 兵庫地理, (56) (56), 29 - 42, Japanese


• Possibilities of Social Policy by NGO in Philippines

  藤岡 秀英, 山岡 淳

  神戸大学経済経営学会, Aug. 2010, 国民経済雑誌, 202(2) (2), 47 - 65, Japanese

  Link to Kobe Univ. Repository (Kernel)


• Current Situations and Issues of Emergency Care System in Hyogo Prefecture

  山岡 淳

  現代書館, 2010, 経済社会学会年報, (32) (32), 66 - 77, Japanese

• 高齢者の地域活動参加の要因分析に基づく地域共生社会の展望 : 兵庫県姫路市夢前町前之庄地区における実践研究—Prospects for a Community-Based Inclusive Society Based on an Analysis of Factors Influencing Elderly Participation in Local Activities—ウェルビーイングの多様性 : 経済社会学的アプローチの可能性

  衣笠 智子, 佐伯 勇, 田村 穂, 井上 紗奈, 豊澤 圭, 山岡 淳, 藤岡 秀英

  東京 : 現代書館, 2025, 経済社会学会年報 / 経済社会学会 編, (47) (47), 62 - 71, Japanese


• 「加点式健診事業」を通じた学生への教育効果—人生100年時代における経済社会学

  田村 穗, 山岡 淳, 藤岡 秀英

  現代書館, 2022, 経済社会学会年報 / 経済社会学会 編, (44) (44), 5 - 16, Japanese

• 成長幻想からの決別 : 平成の検証と令和への展望

  村上, 亨, 柳川, 隆, 小澤, 太郎( 経済学)

  勁草書房, Dec. 2020, Japanese, ISBN: 9784326546121


• 経済社会学キーワード集

  富永健一, 経済社会学会

  ミネルヴァ書房, May 2015, ISBN: 4623071561

  

• JAPAN ECONOMIC POLICY ASSOCIATION


• JAPAN HEALTH ECONOMICS ASSOCIATION


• THE SOCIETY OF ECONOMIC SOCIOLOGY

• 救急搬送提供の効率性向上のための調査研究

  山岡淳, 中澤真弓

  神戸市, ヘルスケアデータ連携システム研究公募, 神戸大学, Apr. 2025 - Mar. 2028, Principal investigator


• 大規模マンション建設に伴う地域経済社会への影響と社会課題

  山岡淳, 田村穂, 荒木俊之, 岩田かなみ, 廣岡大亮, 青山浩也

  神戸市, 大学と連携した地域課題の調査研究業務, 神戸大学, Jun. 2024 - Mar. 2025, Principal investigator


• Empirical research to improve the workplace environment using complex clinical data

  Fujioka Yoshihide

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Kobe University, 01 Apr. 2019 - 31 Mar. 2024

  We collated "receipt data" with a questionnaire to "operators and employees" and clarified that harassment in the workplace environment is related to mental health impairment through analysis. It was also revealed that mental health is also related to lifestyle (Sleep Time), family composition by machine learning methods. It has been clarified that efforts to aim for "health management" for improving the workplace environment will lead to motivation for the work of employees and the intention to leave their jobs. In the Comprehensive Geriatric Assessment Check-up Business" in the mountainous area, we built our own health check-up votes to increase motivation for flail prevention and health promotion, and implemented "Yoitoko Health Check-up", a Novel Health Check-Up Providing Positive Feedback to Older Adults, and through this business, we clarified empirically the improvement of health promotion and motivation to participate in community activities.


• Development of model of economic evaluation, quality of life (QOL), and care in osteoarthritis patients undergoing surgery and conservative therapy

  UESUGI YUKO

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Kobe University, 01 Apr. 2018 - 31 Mar. 2022

  This study examines the status of economic evaluation, quality of life (QOL), and care of osteoarthritis patients undergoing surgery and conservative therapy. The subjects, 80- to 85-year-old patients with osteoarthritis of the knee and hip, were orthopedic outpatients in Hospital. In total, 54 older patients (43 women, mean age of 82.6 years) were considered and divided into three groups: surgery before five years (S1) or within five years (S2) and conservative therapy (NS). In the S1 and NS groups, 42.9% and 15.4% of the patients could walk independently. The QOL score of the physical component was 48.0 and 38.8 in the S1 and NS groups respectively. In the S2 group there was no significant difference in medical costs before and after surgery. However, medical costs decreased for 15 patients (55.6%).


• 介護予防事業の評価と早期予防介入のための指標の開発

  山岡 淳

  ファイザーヘルスリサーチ振興財団, Dec. 2017 - Nov. 2018, Principal investigator

  Competitive research funding


• 介護関連施設における救急搬送要請に関する調査研究

  山岡 淳

  救急振興財団, 救急に関する調査研究助成事業, Apr. 2014 - Mar. 2015, Principal investigator

  Competitive research funding