How can we help doctors stay in rural areas of Japan? A comparison in medical students' attitudes toward general practice and clinical research of a medical school in Japan and in Sweden.

Objective: In Sweden, primary healthcare centers play an important role in the performance of general practice, education, and clinical research. In Japan, general physicians or general practitioners are expected to be more active in the small-scale hospitals and clinics in rural areas. This study aimed to explore the differences in attitudes toward general practice and clinical research among medical students in Japan and Sweden to present solutions to help doctors stay in rural areas of Japan. Materials and Methods: This cross-sectional study was conducted at two medical schools in Japan and Sweden in 2018, using an anonymous and self-administered questionnaire survey that comprised 16 items including 9 items on clinical research. Results: Participants were 154 medical students (response rate: 69.4% for 222 students) in Japan and 56 (27.1% for 201 students) in Sweden. The proportion of medical students who wanted to become general physicians was greater in Japan than in Sweden (Japan:Sweden=36.4%:17.9%; P=0.012). Although fewer Japanese students wanted to conduct research in rural areas than Swedish students (43.5%:57.1%; P<0.001), the positive proportion of Japanese students working in clinical research and/or taking an academic degree in rural areas was greater than that of Swedish students (52.0%:23.2%; P=0.032). Conclusion: As Swedish medical students and young doctors learn considerably from primary healthcare centers, their attitudes toward clinical research are more developed than those of their Japanese counterparts. However, more Japanese medical students than Swedish students wish to become general practitioners, and they are likely to strive to conduct clinical research at small-scale hospitals/clinics in rural areas. Therefore, the improvement of the clinical research environment in small-scale hospitals and clinics in rural areas is needed at the earliest in Japan.

Assessing the medium-term effects of a community-based medical education program with homestay practice: a cohort study in Tamba, Japan.

INTRODUCTION: This study intended to evaluate the medium-term effectiveness of a community-based medical education (CBME) program and to determine the program's influence on the application rates of regional-quota students seeking to become residents in Tamba, Japan. MATERIALS AND METHODS: We conducted a cohort study of regional-quota students. Exposure factors included (1) experience compared to no experience of CBME in the Tamba area; (2) CBME experience compared to no experience in Tamba in the senior years (4-6 years of medical school) and experience in the junior years (1-3 years of medical school); and (3) experience in the senior years compared with those in the junior years. Outcome measures were applications to become a medical resident and actually becoming a medical resident at the Hyogo Prefectural Tamba Medical Center. RESULTS: Of 94 participants, 58 (61.7%) were male and 37 students (39.4%) had previous CBME experience in the Tamba area. In applying to become a resident at the Hyogo Prefectural Tamba Medical Center, students who had experienced CBME in the Tamba area in their senior years had significantly higher adjusted risk ratios compared to those who experienced it in their junior years. Regarding applications to become a resident, students who had experienced CBME in the Tamba area in their senior years had a significantly higher adjusted risk ratio than students who had not experienced CBME and students who had experienced CBME in their junior years. CONCLUSIONS: There was a statistically significant application rate for residency programs among medical students who participated in the CBME program in their senior years compared with those who did not. This is the first study to confirm the medium-term effects of CBME after several years in short-term CBME programs of three days and two nights.

Medical students who participated in our community-based medical education (CBME) program in their senior year were statistically and significantly more likely to apply for residency programs than those who did not.A short-term CBME program of three days and two nights incorporating a homestay practicum showed a medium-term effect after several years.Close contact with local residents is likely to influence future work location selection.

Evaluation of Adverse Reactions to Influenza Vaccination: A Prospective Cohort Study.

This study aimed to investigate the influence of sex, age, and quadrivalent vaccination history on adverse reactions (ARs) to influenza vaccines and the relationship between the occurrence of ARs and the risk of influenza infection. Study participants were employees of three hospitals in the Hyogo Prefecture, Japan, who received the influenza vaccine in 2019. Data were collected using questionnaires. The main factors were age, sex, and history of influenza vaccination as a control. The primary outcomes were the incidence of local and systemic ARs attributable to the vaccine and positive influenza cases among the participants during the influenza season. Logistic regression was used to calculate the odds ratio (OR) and 95% confidence interval (CI). Among the 1493 participants, 80% experienced either local or systemic ARs. ARs were less common among men than among women (OR: 0.28, 95% CI: 0.21-0.37) and less common among those aged ≥60 years (OR: 0.48, 95% CI: 0.26-0.89). ARs were significantly more likely to occur in those with a history of influenza vaccination (OR: 1.96, 95% CI: 1.15-3.33). Those who had ARs, notably localized ones, were significantly more likely to incur influenza infection. Individuals who report ARs to influenza vaccination should strictly adopt non-pharmaceutical preventive measures in the hospital, community settings, and at home.

Association between Adverse Reactions to the First and Second Doses of COVID-19 Vaccine.

This study investigated the frequency of adverse reactions to COVID-19 vaccines in Japan and the impact of first-dose adverse reactions on second-dose adverse reactions. Individuals who received an mRNA COVID-19 vaccine at our center in March or April 2021 were included. Data were collected using questionnaires. The main factors were age (<40, 40−59, and >60 years), sex, underlying disease, and first-dose adverse reaction. The primary outcomes were incidence of local and systemic adverse reactions (ARs) attributable to the vaccine. Logistic regression was used to calculate odds ratios (ORs) and 95% confidence intervals (CIs). Among 671 participants, 90% experienced local or systemic ARs. An AR to the first dose was associated with a significantly increased risk of an AR to the second dose (OR: 49.63, 95% CI: 21.96−112.16). ARs were less common among men than among women (OR: 0.36, 95% CI: 0.17−0.76). Local ARs were less common among those aged 60 years or older (OR: 0.35, 95% CI: 0.18−0.66), whereas systemic ARs were more common among those aged under 40 years. Information on ARs to the first dose is important for healthcare providers and recipients when making vaccination decisions.

Is there a difference between distance and in-person learning during the COVID-19 pandemic in decentralized settings?

Objectives: This study aimed to explore differences in the effects of online and in-person decentralized learning programs on students' satisfaction, attitudes toward community healthcare, and career intentions. Methods: This cross-sectional study used questionnaires administered before and after Kobe University's rural decentralized learning program (conducted in-person in 2018 and 2019 and online in 2020). Of the 208 medical students who participated in any of these three, 198 were included in this study. Questionnaires had ten items regarding program satisfaction, students' attitudes toward community healthcare, and career intention. Difference-in-differences analysis using linear regression was performed for the online and in-person programs' pre-post score differences. Results: Both programs showed improved scores for most outcomes. However, the difference-in-differences analysis indicated significant differences in the enjoyment of the program (F (5, 390) = 18.58, p < 0.01, R2 = 0.17) and recognition of whether local physicians looked happy (F (5, 390) = 12.82, p < 0.01, R2 = 0.16). The online program showed inferiority in the enjoyment of the program (ß = -0.89, t (390) = -1.99, p = 0.05) and recognition of whether local physicians looked happy (ß = -0.67, t (390) = -2.32, p = 0.02). Conclusions: The components of Kobe University's rural decentralized learning program could not be adequately replaced online. Further research should determine which components can be effectively replaced online and what results can be achieved when online programs consciously constructed to include such elements are compared to in-person programs.

Efficient open recruitment and perspectives of host families on medical student homestays in rural Japan.

We devised and assessed open recruitment of host families for medical student homestays in a rural area of Hyogo Prefecture, Japan, so that program organizers would not have to depend on professional and personal connections. The duration of the homestays was one night and two days, and they were conducted in August 2016, 2017, and 2018. The purpose of this community-based medical education program was to promote interactions between medical students and residents of Tamba area. The study asked one family member from each host family to complete a questionnaire after the homestay, and their experiences were evaluated in the study. The questionnaire results were analyzed using a visual analog scale (VAS; 0-100 mm). Thirty-three host families participated in the homestay program over three years. Results showed that VAS scores were high for enjoyment of homestays (VAS; 92.4 ± 13.0), continuation of the homestay program (91.7 ± 12.7), continuation of participation in the homestay program (89.2 ± 16.2), and desire for the homestay students to work in the area in the future (95.4 ± 6.3). The recruitment of host families through advertising was an efficient method for this community-based medical education homestay program. The results indicate that it is possible to attract more host families through open recruitment, which will contribute to the sustainability of the homestay program. Further research, including a follow-up of the students who participated and whether they chose a rural area or Tamba to practice is needed in the future. Since this is an ongoing program, further research in a similar format can be conducted in the future.

Effects of Vaccination Day Routine Activities on Influenza Vaccine Efficacy and Vaccination-Induced Adverse Reaction Incidence: A Cohort Study.

We aimed to investigate the effect of vaccination day routine activities on the influenza vaccine efficacy and vaccination-induced adverse reaction incidence. Study participants were workers at three hospitals in the Hyogo Prefecture, Japan, who received the influenza vaccine between October and November, 2018 and 2019. Their data were collected using a questionnaire. The main factors, which were examined for vaccination day routine activities, were personal hygiene (bathing), smoking, alcohol consumption, caffeine intake, and exercise. The main outcome markers included influenza incidence during the winter season and vaccination-induced local or systemic adverse reaction incidence. The risk ratio for the main factors of vaccination day routine activities was calculated against the main outcome markers using the modified Poisson regression. Overall, 3780 people received the influenza vaccination, and 2731 submitted the questionnaire. We found that vaccination day routine activities did not affect the influenza vaccine efficacy, and engaging in strenuous exercise on the vaccination day tended to cause systemic adverse reactions. Moreover, lifestyle-related activities had no impact on the incidence of systemic or local adverse reactions. Therefore, it is advisable to only avoid strenuous physical exercise, and no other lifestyle-related restrictions are necessary on the day of influenza vaccination.

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

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.

Fostering student motivation towards community healthcare: a qualitative study.

OBJECTIVES: This study investigated what kinds of experiences influence regional quota (chiikiwaku) medical students' motivation to practice community healthcare (CH), and the mechanism of this influence, by focusing on their experiences in a community-based medical education (CBME) programme. DESIGN: A qualitative thematic analysis based on interviews. SETTING: Participants were recruited from the chiikiwaku students of Kobe University, Japan, using purposive sampling. PARTICIPANTS: Fourteen students participated. The median (IQR) age of participants was 23 (23-24); half were sixth-year and half fifth-year students. ANALYSIS: From September to December 2018, the interviews were audiorecorded and transcribed verbatim. Data were analysed according to the 'Steps for Coding and Theorisation' method. Our theoretical framework comprised three internal motives (ie, needs, cognitions and emotions) and their subordinate motivation theories self-determination theory, expectancy-value theories, and positive and negative emotions, respectively. RESULTS: Three mechanisms and corresponding experiences emerged. The first mechanism, envisioning and preparing for practising CH, included corresponding experiences-empathy for the community, grasping the demands for CH, understanding the practices of CH, finding a role model and diminishing the conflicts between personal life and career. The second mechanism, belonging to a supportive community, included the robust construction of students' CH community and harmonisation with community residents. The third mechanism, psychological effects included the affect heuristic and framing effect. Student experiences brought about the changes and influences described in the presented mechanisms, and had both positive and negative impacts on their motivation towards CH. These results can be interpreted through the multifaceted lenses of motivation theories. CONCLUSIONS: The authors revealed that motivation mechanisms of medical students towards CH derived from positive interaction with community residents, healthcare professionals and other students, and from exposure to attractive community environments and cultures. These experiences should be incorporated into CBME programmes to further encourage positive attitudes towards CH.

Long-term impact of undergraduate community-based clinical training on community healthcare practice in Japan: a cross-sectional study.

BACKGROUND: Community-based medical education (CBME) has been evolving globally. However, the long-term impacts of CBME programs on career intention are ambiguous. Therefore, this study aimed to reveal the long-term impact of community-based clinical training (CBCT) such as CBME programs in Japan on current community healthcare (CH) practice. METHODS: This cross-sectional study targeted physicians who had graduated from Kobe University School of Medicine between 1998 and 2004 and had over 15 years' experience after graduation. Self-administered questionnaires were mailed to participants between September and November 2019. Of the 793 potential subjects, 325 questionnaires were undeliverable. A total of 468 questionnaires substantially sent to the subjects. The exposure was the undergraduate CBCT defined as clinical training about CH in a community. The primary outcome was the provision of current CH practice. The secondary outcome was rural retention. The odds ratios (ORs) and confidence intervals (CIs) were calculated, and the confounders (age, gender, and attitude toward CH at admission; primary outcome, and age, gender, attitude toward rural healthcare at admission, own and spouse's hometown, and emphasis on child education; secondary outcomes) were adjusted using multivariate logistic regression analysis. RESULTS: A total of 195 (41.7%) questionnaires were analyzed. The mean (standard deviation [SD]) age of study participants was 43.8 (3.5) years and 76.4% were men. A total of 48 physicians (24.6%) experienced CBCT, of which the mean (SD) training period was 26.3 (27.3) days. As many as 148 (76.3%) physicians provided CH at the time of the study, and 12 (6.5%) worked in rural areas. There was no notable impact of undergraduate CBCT on current CH practice (OR, 1.24; 95% CI, 0.53-3.08; adjusted OR [aOR], 1.00; 95% CI, 0.43-2.30) and rural retention (OR, 0.59; 95% CI, 0.06-2.94; aOR, 0.59; 95% CI, 0.11-3.04). CONCLUSIONS: It may be insufficient to use conventional CBCT in Japan to develop CH professionals effectively. Japanese CBME programs should be standardized through a review of their content and quality. They should continue to be evaluated for their medium- to long-term effects.

Acceptance of a homestay program and attitude toward community medicine among medical students.

BACKGROUND: In community-based medical education, opportunities for medical students to interact with local residents are important. To facilitate such interaction, we aimed to evaluate acceptance of a homestay program and attitude toward community medicine among medical students. METHODS: The participants (n = 39) were allowed to stay in the local homes of residents for one night in August 2016, 2017, and 2018. Before and after the homestays, the students responded to a self-reported questionnaire using the visual analog scale (VAS; 0-100 mm). The questionnaire included four questions on homestay/community medical training and community medicine and four questions about attitude toward community medicine in the local areas of medical students. Then, we compared the VAS scores before and after training. RESULTS: The VAS scores for all questions about homestay/community medical training and community medicine significantly increased: "Is it worthwhile for you to have experience in the field of community medicine," "Did you find the homestay enjoyable," "Does the homestay add educational significance to the program," and "Is direct interaction with residents meaningful?" For the two questions about attitude toward community medicine, the VAS scores significantly increased: "Is there a challenge to practicing community medicine" and "In the future, do you want to work in Tamba area where you stayed?" CONCLUSIONS: The medical students were extremely enthusiastic about the educational program for community medicine involving residential homestays, which improved their attitudes toward practicing community medicine. Moreover, the students appreciated that their training sites could become their future workplaces.

Primary care doctor fostering and clinical research training in Sweden: Implications for Japan.

In 2018, a new training program for primary care physicians was launched in Japan. As physicians responsible for the training of new primary care physicians, we have faced many problems, particularly in rural areas. The influence of this new program on primary care physicians in rural areas of Japan has not been sufficiently investigated. The aim of this research was to improve training for primary care physicians in Japan by examining training programs in Sweden, where the population challenges are similar to those seen in Japan. In this paper, we will express our opinions and describe the differences in the primary care fostering systems and clinical research training for generalist in Japan and Sweden.

Effect of starting oral intake on weekends on the clinical course of patients with aspiration pneumonia.

PURPOSE: The aim of this study was to investigate whether the day of starting oral intake affects the clinical course of patients with aspiration pneumonia. RESULTS: We conducted a retrospective cohort study of 392 patients who were hospitalized for aspiration pneumonia but tolerated oral intake. Patients were divided into two groups according to the day of starting oral intake: Monday to Friday (midweek group) and Saturday or Sunday (weekend group). Underlying diseases, severity of pneumonia, time to oral intake, hospital duration, discontinuation of oral intake, and death during hospitalization were compared between the groups. Multivariate analysis was performed using hospital duration and discontinuation of oral intake due to aspiration as the dependent variables. RESULTS: The cohort comprised 244 men and 148 women with a mean age of 79.3 ± 13.1 years. The weekend (n = 98) and midweek (n = 294) groups exhibited similar age, sex, and underlying diseases. There were no significant differences in pneumonia-related factors, such as CURB-65 score, A-DROP score, extent of shadow on chest radiograph, incidence of bacteremia, and ventilator use. The weekend group exhibited a significantly shorter time to oral intake and hospital duration, as well as a significantly lower incidence of discontinuation of oral intake than the midweek group. Multivariate analysis revealed that starting oral intake on the weekend was independently associated with a lower incidence of discontinuation of oral intake due to aspiration. CONCLUSION: The weekend group exhibited a shorter total hospital duration and a lower incidence of discontinuation of oral intake due to aspiration.

Influence of family history on the willingness of outpatients to undergo genetic testing for salt-sensitive hypertension: a cross-sectional study.

OBJECTIVES: It is unclear whether family medical history influences the willingness to undergo genetic testing. This study aimed to determine how family history affected the willingness to undergo genetic testing for salt-sensitive hypertension in patients with and without hypertension. DESIGN: Cross-sectional study using a self-administered questionnaire. SETTING: Six primary care clinics and hospitals in Japan. PARTICIPANTS: Consecutive 1705 outpatients aged >20 years, 578 of whom had hypertension. PRIMARY AND SECONDARY OUTCOME MEASURES: The primary outcome variable was the willingness to undergo genetic testing to determine the risk of salt-sensitive hypertension, and the secondary variables were age, sex, education level, family history and concerns about hypertension. Factors associated with a willingness to undergo genetic testing were evaluated in patients with and without hypertension using a logistic regression model. RESULTS: In the hypertension and non-hypertension groups, 323 (55.9%) and 509 patients (45.2%), respectively, were willing to undergo genetic testing. This willingness was related with a high level of education (adjusted OR (ad-OR): 1.81, 95% CI 1.12 to 2.93), family history of stroke (1.55, 1.04 to 2.31) and concerns about hypertension (2.04, 1.27 to 3.28) in the hypertension group, whereas in the non-hypertension group, it was influenced by education level (ad-OR: 1.45, 95% CI 1.13 to 1.86), family history of hypertension (1.52, 1.17 to 1.98) and concerns about hypertension (2.03, 1.53 to 2.68). CONCLUSIONS: The influence of family history on the willingness to undergo genetic testing for risk of salt-sensitivity hypertension differed between participants with and without hypertension. In particular, participants without hypertension wished to know their likelihood of developing hypertension, whereas those with hypertension were interested to know the risk of stroke (a complication of hypertension). Family history could help better counsel patients about genetic testing on the basis of their medical history.

Factors involved in the discontinuation of oral intake in elderly patients with recurrent aspiration pneumonia: a multicenter study.

PURPOSE: To assess the factors involved in oral intake discontinuation in elderly patients with recurrent aspiration pneumonia. PATIENTS AND METHODS: This study included patients with pneumonia who were treated at Jichi Medical University Hospital between 2007 and 2013, at Toyooka Public Hospital between 2011 and 2013 and at Yuzawa Community Medical Center between 2010 and 2012. We consecutively enrolled patients with aspiration pneumonia. The primary study point was oral intake discontinuation after the initiation of oral intake during hospitalization in cases of recurrent aspiration. Various parameters were recorded at admission, at the initiation of intake, and during hospitalization; these parameters were statistically evaluated. RESULTS: A total of 390 patients were assigned to either a "no reaspiration of intake" group (n=310) or a "reaspiration of intake" group (n=80), depending on whether intake was discontinued owing to aspiration during hospitalization. At admission, the following items significantly differed between the groups: level of consciousness, respiratory rate, oxygen saturation, CURB-65 score, extent of infiltration/opacity on chest radiography, albumin levels, blood urea nitrogen levels, and application of swallowing function assessment. At the initiation of intake, level of consciousness, pulse rate, and albumin levels significantly differed between the groups. The following items did not significantly differ between groups: systolic blood pressure, pulse rate, C-reactive protein, bacteremia, use of ventilator at admission, oxygen administration, respiratory rate, and systolic blood pressure at initiation of intake. Multivariate analysis revealed that application of swallowing function assessment, level of consciousness at the initiation of intake, and extent of infiltration/opacity on chest radiography were significant predictive variables for discontinuation of intake. CONCLUSION: A low level of consciousness at the initiation of intake and a greater extent of infiltration/opacity on chest radiography and the application of a swallowing function are important factors. These factors may be helpful to determine a suitable timing for resumption of oral intake.

Physicians' opinions regarding the criteria for resuming oral intake after aspiration pneumonia: A questionnaire survey and cluster analysis of hospitals across Japan.

AIM: To investigate the items that are considered by physicians when making decisions regarding the resumption of oral intake among patients with aspiration pneumonia who have undergone short-term fasting. METHODS: We surveyed 2490 Japanese hospitals that had internal medicine and respiratory medicine departments. We mailed questionnaires that contained 24 items related to oral intake resumption after aspiration pneumonia to the head of the department at each hospital. Cronbach statistics, principal component analysis and cluster analysis were used to analyze the results. RESULTS: We received responses from 350 hospitals; 89.7% of the respondents answered that they "Strongly agree" that "level of consciousness" is a useful criterion for resuming oral intake. Furthermore, 66%, 66%, 63.4%, 58.5% and 51% of the respondents answered that they "strongly agree" regarding the use of SpO2 , the discretion of the attending physician, body temperature, swallowing function test results, mental state and respiratory rate, respectively. In the cluster analysis, level of consciousness, body temperature, SpO2 , respiratory rate, mental state and the discretion of the attending physician belonged to the first cluster. The second cluster consisted of the patient's request, the family's request, the opinions of the medical staff and non-physician healthcare providers, and performance status. CONCLUSIONS: Physicians consider several criteria during decision-making regarding oral intake resumption, which can be assigned to two clusters. Future studies are required to develop generalizable and objective criteria. Geriatr Gerontol Int 2017; 17: 810-818.

Differences in caregiver daily impression by sex, education and career length.

AIM: We previously proposed the concept of caregiver daily impression (CDI) as a practical tool for emergency triage. We herein assessed how CDI varies by sex, education and career length by determining CDI scores as quantitative outcome measures. METHODS: We carried out a cross-sectional study using a self-reported questionnaire among caregivers in 20 long-term care facilities in Hyogo, Japan. A total of 10 CDI variables measured participants' previous experience of emergency transfers using a scale from 0-10. The resulting total was defined as the CDI score. We hypothetically considered that higher scores indicated greater caregiver focus. The CDI scores were compared by sex, education and career length using analysis of covariance. RESULTS: A total of 601 personal caregivers were evaluated (mean age 36.7 years; 36% men). The mean career length was 6.9 years, with the following groupings: 1-4 years (38%), 5-9 years (37%) and >10 years (24%). After adjustment for sex and education, the CDI scores for the variable, "poor eye contact," significantly differed between caregivers with ≥10 and <5 years of experience (scores of 5.0 ± 3.1 and 4.0 ± 2.7, respectively). The CDI scores for variables related to eyes tended to increase with experience, whereas other CDI scores decreased. Male caregivers focused on residents' eyes significantly more than did female caregivers. CONCLUSIONS: We found that the CDI variable, "poor eye contact," is influenced by career length. Caregivers with more experience attach more importance to their impression of residents' eyes than do those with less experience. Sex-related differences in CDI might also exist. Geriatr Gerontol Int 2016; 17: 410-415.

Does a medical history of hypertension influence disclosing genetic testing results of the risk for salt-sensitive hypertension, in primary care?

OBJECTIVE: Disclosing genetic testing results may contribute to the prevention and management of many common diseases. However, whether the presence of a disease influences these effects is unclear. This study aimed to clarify the difference in the effects of disclosing genetic testing results of the risk for developing salt-sensitive hypertension on the behavioral modifications with respect to salt intake in hypertensive and nonhypertensive patients. METHODS: A cross-sectional study using a self-administered questionnaire was conducted for outpatients aged >20 years (N=2,237) at six primary care clinics and hospitals in Japan. The main factors assessed were medical histories of hypertension, salt preferences, reduced salt intakes, and behavior modifications for reducing salt intake. Behavioral modifications of participants were assessed using their behavior stages before and after disclosure of the hypothetical genetic testing results. RESULTS: Of the 2,237 participants, 1,644 (73.5%) responded to the survey. Of these respondents, 558 (33.9%) patients were hypertensive and 1,086 (66.1%) were nonhypertensive. After being notified of the result "If with genetic risk", the nonhypertensive participants were more likely to make positive behavioral modifications compared to the hypertensive patients among all participants and in those aged <65 years (adjusted relative ratio [ad-RR], 1.76; 95% confidence interval, 1.12-2.76 and ad-RR, 1.99; 1.11-3.57, respectively). In contrast, no difference in negative behavioral modifications between hypertensive and nonhypertensive patients was detected after being notified of the result "If without genetic risk" (ad-RR, 1.05; 95% confidence interval, 0.70-1.57). CONCLUSION: The behavior of modifying salt intake after disclosure of the genetic testing results differed between hypertensive and nonhypertensive patients. Disclosing a genetic risk for salt-sensitive hypertension was likely to cause nonhypertensive patients, especially those aged <65 years, to improve their behavior regarding salt intake. We conclude that disclosing genetic testing results could help prevent hypertension, and that the doctor should communicate the genetic testing results to those patients with a medical history of hypertension, or those who are at risk of developing hypertension.

Differences in genotype frequencies of salt-sensitive genes between fishing and nonfishing communities in Japan.

PURPOSE: To identify the differences in genotype frequencies of salt-sensitive genes between residents of fishing communities (FCs) and nonfishing communities (NFCs). METHODS: The subjects included 18,156 individuals (8,043 males [44%] and 10,113 females [56%]; average age: 57.2±16.1 years) from the general population who were registered with large-scale genome banks and resided in 30 prefectures and 78 different regions in Japan. The measurement items were age, sex, blood pressure, presence or absence of hypertension, body mass index, alcohol consumption, and smoking habit. Furthermore, to analyze the genotype frequencies of salt-sensitive genes, α-adducin 1 (ADD1), angiotensinogen (AGT), angiotensin II receptor type 1 (AT1), and guanine nucleotide-binding protein ß peptide 3 (GNB3) were measured. According to the 2004 government classification of municipalities (cities, towns, and villages), communities existing in areas bordering an ocean and with an ocean port were defined as FCs (28 areas). The others were defined as NFCs (50 areas). A logistic regression model was used for comparison of genotype frequencies between subjects residing in FCs and NFCs. RESULTS: Of the included subjects, 4,916 (27.0%) and 13,240 (73.0%) resided in FCs and NFCs, respectively. In FCs, the mean age was 59.4±16.7 years and men accounted for 41.0% of the cohort (n=2,015). In NFCs, the mean age was 56.4±15.8 years and men accounted for 45.5% of the cohort (n=6,028). The adjusted odds ratios of the AA and AG genotypes compared with the GG genotype for AGT were 0.80 (95% confidence interval [CI]: 0.68-0.95) and 0.76 (95% CI: 0.64-0.91), respectively. The adjusted odds ratio of the CC genotype compared with AA for AT1 was 0.63 (95% CI: 0.40-0.93). CONCLUSION: The incidence of the salt-sensitive genotypes AGT and AT1 in residents of FCs were significantly lower than in NFCs.