JaLCDOI 10.18926/AMO/53022
フルテキストURL 68_6_331.pdf
著者 Ohtsu, Tadahiro| Kaneita, Yoshitaka| Osaki, Yoneatsu| Kokaze, Akatsuki| Ochiai, Hirotaka| Shirasawa, Takako| Nanri, Hinako| Ohida, Takashi|
抄録 The purposes of this study were to evaluate the mental health status of Japanese medical students and to examine differences based on gender, as well as on university type and location, using the results of a nationwide survey. Between December 2006 and March 2007, we conducted a questionnaire survey among fourth-year medical students at 20 randomly selected medical schools in Japan. The data from 1,619 students (response rate:90.6%;male:1,074;female:545) were analyzed. We used the Japanese version of the 12-item General Health Questionnaire (GHQ-12) to measure mental health status. Poor mental health status (GHQ-12 score of 4 points or higher) was observed in 36.6% and 48.8% of the male and female medical students, respectively. The ratio of the age-adjusted prevalence of poor mental health status in female versus male medical students was 1.33 (95% confidence interval:1.10-1.62). The universities were categorized into two groups based on the university type (national/public:15 vs. private:5) or location (in a large city:7 vs. in a local city:13 cities). The prevalence of poor mental health status in both men and women differed between these groups, although not significantly. The GHQ-12 scores in men significantly differed between the categorized groups of universities. These results suggest that adequate attention must be paid to the mental health of medical students, especially females, and that a system for providing mental health care for medical students must be established in the context of actual conditions at each university.
キーワード medical students mental health 12-item General Health Questionnaire gender difference Japan
Amo Type Original Article
発行日 2014-12
出版物タイトル Acta Medica Okayama
68巻
6号
出版者 Okayama University Medical School
開始ページ 331
終了ページ 337
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2014 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 25519027
Web of Sience KeyUT 000346882200003
JaLCDOI 10.18926/AMO/48259
フルテキストURL 66_2_93.pdf.pdf
著者 Ochiai, Hirotaka| Shirasawa, Takako| Shimada, Naoki| Ohtsu, Tadahiro| Nishimura, Rimei| Morimoto, Aya| Hoshino, Hiromi| Tajima, Naoko| Kokaze, Akatsuki|
抄録 Although a number of studies have investigated the relationship of sleep duration to overweight and obesity, studies conducted among population-based elementary schoolchildren have been limited in Japan. The aim of the present study was to investigate the relationship between sleep duration and overweight among elementary schoolchildren in Japan. The study subjects were all fourth-grade schoolchildren (9 or 10 years of age) in Ina-town, Saitama Prefecture, Japan from 1999 to 2008. Information concerning each subjectʼs sex, age, and lifestyle was obtained using a self-administered questionnaire, while measurements of his or her height and weight were carried out. Childhood overweight was determined according to the definition established by the International Obesity Task Force. Data from 3,433 children were analyzed. In logistic regression analysis, a statistically significant dose-response relationship was observed between sleep duration and overweight among boys (p for trend=0.014) but not among girls (p for trend=0.149). Short sleep duration was associated with childhood overweight, and the sex difference in the association was observed. These findings suggested that it is important to consider sleep duration as part of any program to prevent overweight among elementary schoolchildren, especially among boys.
キーワード sleep overweight schoolchildren Japan
Amo Type Original Article
発行日 2012-04
出版物タイトル Acta Medica Okayama
66巻
2号
出版者 Okayama University Medical School
開始ページ 93
終了ページ 99
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2012 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 22525467
Web of Science KeyUT 000303175300002
JaLCDOI 10.18926/AMO/48080
フルテキストURL 66_1_41.pdf
著者 Ohtsu, Tadahiro| Kaneita, Yoshitaka| Ishimura, Yohei| Aritake, Sayaka| Mishima, Kazuo| Uchiyama, Makoto| Akashiba, Tsuneto| Uchimura, Naohisa| Nakaji, Shigeyuki| Munezawa, Takeshi| Shimada, Naoki| Kokaze, Akatsuki| Ohida, Takashi|
抄録 Little research has been done on the association between relaxation and health. In the present study, by conducting a nationwide cross-sectional survey, we aimed to obtain scientific data on the preferable forms of relaxation for health promotion, and to clarify the associations between specific recreational activities and self-perceived mental and physical health. We selected 4,000 households by stratified random sampling from across Japan in November 2009 and used the interview method to collect data (number of subjects:2,206). The questionnaire contained items on sleep, recreation status, recreational activities, and self-perceived mental and physical health status. We obtained responses from 1,224 adults (response rate:55.5%). Insufficient rest from sleep, short sleep duration (<6h/day), ineffective use of free time, and less free time used for activities other than rest showed independent positive associations with poor mental and physical health. The results of the logistic regression analyses showed significantly low adjusted odds ratios with regard to the status of poor mental and physical health for outings/walking among men (0.33 [95% confidence interval;0.16-0.68] and 0.49 [0.26-0.90], respectively), and for community activities among women (0.19 [0.04-0.79] and 0.27 [0.09-0.77], respectively). Relaxation for the promotion of health should include both passive relaxation (rest) and active relaxation (recreation). In addition, ensuring sufficient sleep duration is important for passive relaxation, and engaging in outings/walking for men and community activities for women are important for active relaxation.
キーワード passive relaxation active relaxation recreational activity self-perceived health
Amo Type Original Article
発行日 2012-02
出版物タイトル Acta Medica Okayama
66巻
1号
出版者 Okayama University Medical School
開始ページ 41
終了ページ 51
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2012 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 22358138
Web of Science KeyUT 000300800700006
JaLCDOI 10.18926/AMO/47264
フルテキストURL 65_6_387.pdf
著者 Ohtsu, Tadahiro| Toda, Ryouhei| Shiraishi, Tomonobu| Toyoda, Hirokuni| Toyozawa, Hideyasu| Kamioka, Yasuaki| Ochiai, Hirotaka| Shimada, Naoki| Shirasawa, Takako| Hoshino, Hiromi| Kokaze, Akatsuki|
抄録 Empirical data indicative of the health conditions and medical needs of homeless persons are scarce in Japan. In this study, with the aim of contributing to the formulation of future healthcare strategies for the homeless, we conducted a self-administered questionnaire survey and interviews at a park in Shinjuku Ward, Tokyo, to clarify the living conditions of homeless persons and their health conditions and awareness about the availability of medical treatment. Responses from 55 homeless men were recorded (response rate:36.7%). With the exception of one person, none of them possessed a health insurance certificate. Half of the respondents reported having a current income source, although their modal monthly income was 30,000 yen($1 was approximately 90 yen). The number of individuals who responded "yes" to the questions regarding "Consulting a doctor on the basis of someone's recommendation" and "Being aware of the location of the nearest hospital or clinic" was significantly higher among those who had someone to consult when they were ill than among those who did not (the odds ratios [95% confidence intervals] were 15.00 [3.05-93.57] and 11.45 [1.42-510.68], respectively). This showed that whether or not a homeless person had a person to consult might influence his healthcare-seeking behavior. When queried about the entity they consulted (multiple responses acceptable), respondents mentioned "life support organizations" (61.1%) and "public offices" (33.3%). Overall, 94.5% of the respondents were aware of swine flu (novel influenza A (H1N1)). Their main sources of information were newspapers and magazines. On the basis of these findings, with regard to the aim of formulating healthcare strategies for homeless persons, while life support organizations and public offices play significant roles as conduits to medical institutions, print media should be considered useful for communicating messages to homeless persons.
キーワード homeless persons person to consult seeking medical treatment healthcare swine flu
Amo Type Original Article
発行日 2011-12
出版物タイトル Acta Medica Okayama
65巻
6号
出版者 Okayama University Medical School
開始ページ 387
終了ページ 393
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2011 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 22189479
Web of Sience KeyUT 000298516900005
JaLCDOI 10.18926/AMO/40130
フルテキストURL 64_4_225.pdf
著者 Ohtsu, Tadahiro| Kokaze, Akatsuki| Shimada, Naoki| Kaneita, Yoshitaka| Shirasawa, Takako| Ochiai, Hirotaka| Hoshino, Hiromi| Takaishi, Masahiro|
抄録 Over the past two decades, the liquor industry in Japan has strived to address alcohol-related problems through initiatives such as warnings in the various media. In this study, we conducted an Internet-based questionnaire survey to examine general consumer awareness of such warnings, and the media by which they are conveyed, on the consumption of alcoholic beverages. A total of 985 subjects (males:487, females:498) in age groups ranging from 20s to 70s responded (response rate:22.4%). The awareness rates for warnings regarding underage drinking, drunk driving, and drinking during pregnancy, and those for messages encouraging moderation in drinking, were 96.4%, 83.7%, 59.6%, and 45.5%, respectively. Logistic regression analysis adjusted for habitual alcohol consumption demonstrated significant gender- and/or age-based differences in the rates of awareness of warnings and the media publicizing them. For example, the odds ratio of awareness among women of warnings against underage drinking was significantly higher than that of awareness among men. Issues that must be addressed in the future include:(1) increasing public awareness about messages regarding drinking during pregnancy and drinking in moderation;(2) reviewing the wording of warnings to make them more effective;and (3) devising and employing, on a regular basis, more effective means of transmitting messages in consideration of gender and age.
キーワード alcoholic beverages warnings consumer awareness Internet-based survey
Amo Type Original Article
発行日 2010-08
出版物タイトル Acta Medica Okayama
64巻
4号
出版者 Okayama University Medical School
開始ページ 225
終了ページ 232
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 20802539
Web of Sience KeyUT 000281384400003
JaLCDOI 10.18926/AMO/32109
フルテキストURL fulltext.pdf
著者 Sato, Kyoko| Kawakami, Norito| Ohtsu, Tadahiro| Tsutsumi, Akizumi| Miyazaki, Shougo| Masumoto, Takeshi| Horie, Seichi| Haratani, Takashi| Kobayashi, Fumio| Araki, Shunichi|
抄録 <p>Previous in vitro and animal experiments have shown that sulforaphane, which is abundant in broccoli, inhibits Helicobacter pylori (H. pylori) infection and blocks gastric tumor formation. This suggests that broccoli consumption prevents chronic atrophic gastritis (CAG) introduced by H. pylori infection and, therefore, gastric cancer. For an epidemiological investigation of the relationship between the broccoli consumption and CAG, a cross-sectional study of 438 male employees, aged 39 to 60 years, of a Japanese steel company was conducted. CAG was serologically determined with serum cut-off values set at pepsinogen I &#60; or = 70 ng/ml and a ratio of serum pepsinogen I/pepsinogen II &#60; or = 3.0. Broccoli consumption (weekly frequency) and diet were monitored by using a 31-item food frequency questionnaire. The prevalence of CAG among men who ate broccoli once or more weekly was twice as high as that among men who consumed a negligible amount (P &#60; 0.05). Multiple logistic regression analysis indicated that broccoli consumption once or more weekly significantly increased the risk for CAG (odds ratio, 3.06; 95% confidence interval, 1.12-8.38; P &#60; 0.05), after controlling for age, education, cigarette smoking, and alcohol consumption. The present study failed to show an expected association between frequent broccoli consumption and a low prevalence of CAG.</p>
キーワード broccoli sulforaphane chronic atrophic gastritis pepsinogen Helicobacter pylori (H. pylori)
Amo Type Article
発行日 2004-06
出版物タイトル Acta Medica Okayama
58巻
3号
出版者 Okayama University Medical School
開始ページ 127
終了ページ 133
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
論文のバージョン publisher
査読 有り
PubMed ID 15471434
Web of Science KeyUT 000222273300003
JaLCDOI 10.18926/AMO/31986
フルテキストURL fulltext.pdf
著者 Ochiai, Hirotaka| Ohtsu, Tadahiro| Tsuda, Toshihide| Kagawa, Haruko| Kawashita, Toshiaki| Takao, Soshi| Tsutsumi, Akizumi| Kawakami, Norito|
抄録 <p>On February 13, 2002, a public health center in Hiroshima Prefecture, Japan, was notified that many individuals living at the Japan Maritime Self-Defence Force base had symptoms resembling those of food poisoning. Self-administered questionnaires requesting information regarding meal consumption and symptoms were distributed to all 281 members at the base. A case of the illness was defined as a member who had had watery or mucousy stool, or loose stool with abdominal cramps, more than twice a day after consuming dinner on February 12. Control of the illness was defined as a member with no symptoms. The dinner on February 12 was significantly associated with the illness (Mantel-Haenszel odds ratio: 3.59, 95% confidence interval: 1.06-12.20). A case-control study showed that, among the food supplied at dinner on February 12, the braised chop suey was significantly associated with the illness (odds ratio: 12.30, 95% confidence interval: 1.90-521.00). The braised chop suey had been stored in a chafing dish. An environmental investigation indicated that Clostridium perfringens (C. perfringens) in the chafing dish proliferated under an inappropriate heat-retention temperature, and the contaminated braised chop suey could have caused the food poisoning. This study demonstrated that the recommended heat-retention temperature (over 65 degrees C) should be confirmed thoroughly.</p>
キーワード outbreak Clostridium perfringens (C. perfringens) epidemiology food poisoning
Amo Type Article
発行日 2005-02
出版物タイトル Acta Medica Okayama
59巻
1号
出版者 Okayama University Medical School
開始ページ 27
終了ページ 32
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
論文のバージョン publisher
査読 有り
PubMed ID 15902996
Web of Science KeyUT 000227263300004
JaLCDOI 10.18926/AMO/31856
フルテキストURL fulltext.pdf
著者 Ohtsu, Tadahiro| Kaneita, Yoshitaka| Ohida, Takashi| Osaki, Yoneatsu| Kanda, Hideyuki| Tamaki, Tetsuo| Shirasawa, Takako| Haseba, Yahiro| Kokaze, Akatsuki| Hayashi, Kenji|
抄録 <p>In this study we investigated the attitudes of Japanese medical students toward being informed of a diagnosis of life-threatening illness. Fourth-year medical students from 20 randomly sampled universities were administered questionnaires that examined their opinion about whether they would welcome disclosure of medical information if they were diagnosed as having an ultimately fatal disease. Data from 1,619 students (male 1,074, female 545, effective collection rate 90.6%) were analyzed. With regard to attitudes about disclosure of a diagnosis of life-threatening illness, 87.7% of the students stated that they would wish to be informed even if there was little chance of recovery, and 11.6% expressed a wish to be informed of their condition only if there was a chance of recovery. Students who did not wish to be informed even if there was a chance of recovery accounted for 0.7% of those surveyed. Our study reveals that medical students are more positive than are members of the general population with regard to being informed of the truth. The proportion of those who wished to be informed even if there was little chance of recovery was higher among students from national and public universities than among those from private universities, and the inter-group difference was statistically significant. Among male students, answers to the survey were significantly correlated with 12-item General Health Questionnaire scores and mental health status, suggesting that mental health status may have affected how this study population viewed being informed of their diagnosis.</p>
キーワード medical students life-threatening illness medical condition disclosure 12-item General Health Questionnaire (GHQ-12)
Amo Type Original Article
発行日 2009-02
出版物タイトル Acta Medica Okayama
63巻
1号
出版者 Okayama University Medical School
開始ページ 19
終了ページ 24
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
論文のバージョン publisher
査読 有り
PubMed ID 19247419
Web of Science KeyUT 000263730300003
JaLCDOI 10.18926/AMO/31844
フルテキストURL fulltext.pdf
著者 Ohtsu, Tadahiro| Kokaze, Akatsuki| Shimada, Naoki| Kaneita, Yoshitaka| Shirasawa, Takako| Ochiai, Hirotaka| Ohida, Takashi|
抄録 <p>The structural deficits and problems associated with application of the International Statistical Classification of Diseases and Related Health Problems, Tenth Revision (ICD-10) were investigated. For this purpose, mortality statistics in Japan were examined for bias in the proportions of death causes classified using the ICD-10 four-character subcategory system, particularly the large distribution of cases classified under the .9 (unspecified) codes. The results showed that most deaths due to the 3 major causes were coded into the .9 subcategories. For example, 97.6% of the 607,065 deaths between 1995 and 2007 classified as I21 (acute myocardial infarction) were coded as I21.9 (acute myocardial infarction, unspecified). This suggests that the quality of the data recorded on many death certificates is poor. Thus, to ensure that the fourth-digit-level subcategories of the ICD-10 code system are effectively used to represent mortality data and actual causes of death in Japan, future studies should address the following objectives:(1) to minimize the discrepancy between the ICD classification terms and the names of diseases actually used in clinical practice, and (2) to actively raise awareness among physicians about the need to accurately record death causes on death certificates, since these records form the basis for determining mortality statistics in Japan.</p>
キーワード ICD-10 four-character subcategories death certificate mortality statistics
Amo Type Original Article
発行日 2009-10
出版物タイトル Acta Medica Okayama
63巻
5号
出版者 Okayama University Medical School
開始ページ 281
終了ページ 286
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
論文のバージョン publisher
査読 有り
PubMed ID 19893604
Web of Science KeyUT 000271132000008
JaLCDOI 10.18926/AMO/31838
フルテキストURL fulltext.pdf
著者 Ohtsu, Tadahiro| Kokaze, Akatsuki| Osaki, Yoneatsu| Kaneita, Yoshitaka| Shirasawa, Takako| Ito, Taku| Sekii, Hideaki| Kawamoto, Teruyoshi| Hashimoto, Masayasu| Ohida, Takashi|
抄録 <p>The number of suicide deaths in Japan has continued to be high, and is a pressing social problem. Although the weekly distribution of suicide deaths has been documented, no nationwide analysis has yet been conducted. In the present study, the ratios of the number of suicide deaths per day, by day of the week, and on weekdays relative to holidays were calculated using the data for all suicide deaths recorded in 2003. The suicide deaths recorded on holidays were treated as the reference, and a confidence interval of 95% (95% CI) was used. We calculated the suicide death ratios among men and women of all ages (men:23,396, women:8,713, total:32,109) and also among those of productive age (age:15-64 years, men:18,552, women:5,481, total:24,033). Among men of all ages, the suicide death ratio on Mondays was found to be significantly high at 1.49 (95% CI:1.04-2.14), and the ratios were found to decrease over the course of the week from Monday to Friday. On each weekday, the suicide death ratios among men of productive age were found to be higher than those among men of all ages. Among women, the suicide death ratios on any weekday were found to be higher than 1, but there was no significant difference between the days. Among both men and women, the number of suicide deaths on holidays was lower than that on weekdays. This study revealed that the number of suicide deaths recorded per day on Mondays is 1.5 times higher than that on holidays among men. This suggests that the structure of the work week may possibly influence suicide deaths among men. Future discussions regarding the arrangement and distribution of weekly holidays should be conducted in order to reduce the number of suicide deaths.</p>
キーワード blue Monday phenomenon suicide deaths weekly distribution
Amo Type Original Article
発行日 2009-10
出版物タイトル Acta Medica Okayama
63巻
5号
出版者 Okayama University Medical School
開始ページ 231
終了ページ 236
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
論文のバージョン publisher
査読 有り
PubMed ID 19893598
Web of Science KeyUT 000271132000002
JaLCDOI 10.18926/AMO/31825
フルテキストURL fulltext.pdf
著者 Makita, Ryuji| Kokaze, Akatsuki| Ohtsu, Tadahiro| Ishikawa, Mamoru| Matsunaga, Naomi| Karita, Kanae| Yoshida, Masao| Tanaka, Nobukazu| Yamamoto, Minoru| Hayashi, Junichi| Takashima, Yutaka| Kitamoto, Kiyoshi|
抄録 <p>Reduced nicotinamide adenine dinucleotide (NADH) dehydrogenase subunit 2 237 leucine/methionine (ND2-237 Leu/Met) polymorphism, is reportedly associated with longevity in the Japanese population. The ND2-237Met genotype may exert resistance to atherogenic diseases, such as myocardial infarction or cerebrovascular disorders. To investigate whether ND2-237 Leu/Met polymorphism is associated with yearly changes in serum lipid levels, we conducted a longitudinal study of 107 healthy Japanese male subjects. Analysis of covariance revealed that the interaction between the ND2-237 Leu/Met genotypes and habitual drinking was significantly associated with yearly changes in serum total cholesterol (TC) and low-density lipoprotein cholesterol (LDLC) levels (p0.036 and p0.006, respectively). In multiple regression analysis, daily drinking was significantly and positively associated with yearly changes in serum LDLC levels in men with ND2-237Met (p0.026). After adjusting for covariates, yearly changes in serum LDLC levels were significantly lower in non-daily drinkers with ND2-237Met than in those with ND2-237Leu (p0.047). These results suggest that ND2-237Met has a beneficial impact on yearly changes in serum LDLC in non-daily drinkers but not in daily drinkers.</p>
キーワード daily alcohol consumption longevity total cholesterol low-density lipoprotein cholesterol NADH dehydrogenase
Amo Type Original Article
発行日 2009-12
出版物タイトル Acta Medica Okayama
63巻
6号
出版者 Okayama University Medical School
開始ページ 331
終了ページ 338
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
論文のバージョン publisher
査読 有り
PubMed ID 20035289
Web of Science KeyUT 000273145900004