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OBJECTIVES: To identify 1) factors of the evidence-practice gap (EPG) in Japan and Brazil as perceived by dentists and compare these factors between two countries, and 2) mechanisms to close this EPG. METHODS: The study employed a cross-sectional design by administering a web-based questionnaire to 136 Japanese and 110 Brazilian dentists. The survey queried dentists' reports of which factors possibly cause an EPG, using a newly developed 20-item questionnaire. RESULTS: An international comparison of 20 items related to factors of the EPG between Japan and Brazil revealed that "Dentists' own experiences are sometimes given priority over evidence" and "Dentists' own thoughts are sometimes given priority over evidence" were common factors to both countries, with over 80 % agreement. In logistic regression, "Insufficient opportunity to learn about evidence in dental education at universities", "Evidence-based treatments are sometimes not covered by the dental insurance system", and "Insufficient evidence which helps dentists choose an appropriate treatment for a patient after careful consideration of his/her own background" were significantly associated with the EPG in Japan (p < 0.05). In Brazil, "Insufficient case reports in which evidence-based dentistry (EBD) is applied to clinical practice" and "Image-based information and devices used for diagnosis vary depending on individual dentists" were significantly associated with the EPG (p < 0.05). CONCLUSIONS: This study suggests that EPG could be improved in Japan: by promoting EBD education at universities, improving the dental insurance system, and accumulating evidence according to patient background; and in Brazil: by promoting EBD case reports and standardizing diagnostic information and devices. CLINICAL SIGNIFICANCE: Two factors of EPG common to Japan and Brazil, namely the prioritization of dentists' own "experiences" and "thoughts" over evidence, are urgent issues for improving EPG. In addition, it will be necessary to address the country-specific factors of EPG that were identified in this study.

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OBJECTIVES: To determine whether: the evidence-practice gap (EPG) in minimal intervention dentistry (MID) can be improved by a tailored web-based intervention, and specific clinical situations might impede implementing MID. METHODS: We conducted a before-after intervention study and a qualitative study. Two web-based questionnaire surveys were conducted among 197 Japanese dentists. In the first questionnaire, a baseline EPG was measured using six questionnaire items. Subsequently, feedback material about the EPG was electronically prepared, including results of the first questionnaire, international comparisons with a previous study from the US, and a summary of recent evidence on MID. In the second questionnaire, the EPG was re-measured after participants read the material. The primary outcome was mean overall concordance between published evidence and the dentist's clinical practice for all six questions. During the second questionnaire, we performed qualitative content analysis using free-text responses to a question about difficult situations encountered when conducting MID. RESULTS: Regarding before and after comparisons of concordance between the first and second questionnaires, mean overall concordance improved significantly, from 66% to 89% (p<0.001). Qualitative content analysis identified five difficult situations: "cases where decision making for treatment and prognosis is difficult", "inadequate practice resources", "limitations on patient visit and treatment period", "discrepancy between MID and the patient's values", and "limitations on health insurance and social understanding". CONCLUSIONS: These results suggest that it is possible to reduce the EPG in MID using a web-based educational intervention among Japanese dentists. Qualitative content analysis revealed five difficult situations that might hinder implementation of MID. CLINICAL SIGNIFICANCE: Although this intervention demonstrated educational effects, perfect concordance was not achieved by all participants. This is possibly associated with the five situations that participants reported facing when conducting MID. Creating an environment to improve these situations may facilitate a reduction in the EPG.

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OBJECTIVES: This study aimed to 1) quantify the evidence-practice gap (EPG) between dental clinical practice and published evidence on Minimal Intervention Dentistry (MID) among dentists in Japan; and 2) examine the hypothesis that dentist characteristics have a significant association with the EPG. METHODS: We conducted a cross-sectional study via use of a web-based questionnaire survey of dentists who were affiliated with the Dental Practice-based Research Network Japan (n = 297). To quantify the EPG on MID, we used a questionnaire that included 10 clinical questions or scenarios to assess concordance between dental practice and published evidence on MID. We evaluated concordance by coding responses to each question as consistent or inconsistent with the evidence. An overall concordance was then determined as percent of responses that were consistent with published evidence for 10 questions. Subsequently, multiple logistic regression analysis was conducted to examine the associations between dentist characteristics and higher overall concordance (≥median) with published evidence. RESULTS: Mean and median overall dentist-level concordance were both 60 % (SD: 18, interquartile range: 50-75 %). Logistic regression analysis showed that "gender of dentist", "city population", and "frequency of obtaining evidence from the scientific journal articles in English" were significantly associated with high concordance, with odds ratios (95 % CIs) of 2.33 (1.01-5.39), 2.01 (1.02-3.96), and 2.45 (1.08-5.59), respectively. CONCLUSIONS: Japanese dentists demonstrated medium concordance with published evidence, indicating that an EPG on MID exists in Japanese dental clinical practices. Dentist-specific characteristics had significant associations with high concordance with published evidence. CLINICAL SIGNIFICANCE: Despite the establishment and dissemination of the concept of MID, the EPG on MID exists in Japanese dental clinical practices. A high concordance was significantly associated with the following dentist characteristics: "female dentist", "dental clinic location in a government-ordinance-designated city", and "frequently obtaining evidence from the English-language scientific journal articles".

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OBJECTIVES: This study quantified and compared practice patterns of treatment for deep occlusal carious lesions among Japanese dentists, and tested the hypothesis that dentist characteristics are significantly associated with the decision to choose an indirect pulp capping (IPC), a form of selective carious tissue removal that involves leaving a thin layer of demineralized tissue over the pulp, that is then covered with a protective liner. METHODS: This cross-sectional study was conducted using a questionnaire survey of dentists affiliated with the Dental Practice-based Research Network Japan (n = 297). Dentists were asked to indicate what percentage of time they use three treatment options when treating patients with deep occlusal caries and possible mild pulpitis on a posterior tooth. Response options were "1. Stop before removing all caries and perform an IPC", "2. Remove all caries and proceed with a direct pulp cap", and "3. Remove all caries and proceed with endodontic-related procedures". Percentages of options 1-3 were compared by multiple comparison. Associations between dentist characteristics and a higher percentage of IPC provision (option 1) were analyzed via logistic regression. RESULTS: Responses were obtained from 206 dentists. Median percentages (interquartile ranges) of options 1, 2 and 3 were 30% (10-59%), 10% (0-30%), and 40% (19-80%), respectively. The differences between option 3 and options 1 and 2 were significant (p < 0.001). In logistic regression analysis, a higher frequency of obtaining evidence from English-language scientific articles was significantly associated with a higher percentage of IPC, with an odds ratio of 2.28 (95%CI: 1.14-4.54). CONCLUSIONS: Endodontic-related procedures remain the most frequent treatment option for deep occlusal caries. Frequent use of evidence-based information in English-language scientific articles was associated with Japanese dentists' preference toward IPC. CLINICAL SIGNIFICANCE: Japanese dentists would most frequently choose endodontic-related procedures, followed by IPC and direct pulp capping for treatment of patients with deep occlusal caries with possible mild pulpitis on posterior teeth. Significant association was identified between use of evidence-based information in the English-language scientific literature and Japanese dentists' preference for IPC.

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OBJECTIVES: This study aimed to identify (i) which practice-based research agendas had the highest priority among patients and (ii) whether priorities varied significantly with patient age and gender. METHODS: We conducted a cross-sectional questionnaire survey of 482 patients from 11 outpatient dental practices. The patients were shown 31 items concerning practice-based research questions and asked to select the three items in which they were most interested. We generated a rank order of the 31 items. Subsequently, the 31 items were categorised into 10 groups, and we performed subgroup analyses according to age and gender using chi-square tests. RESULTS: "Age-specific care to maintain oral health (n = 86)" was rated as the most interesting research question. When data were analysed according to age, patients less than 40 years old rated "Orthodontic treatment", "Esthetic dental care" and "Topical fluoride application" as interesting questions significantly more frequently than did patients 40 years old or older (P < 0.01)?, while patients 40 years old or older rated "Regular dental check-ups", "Dental implant", "Diet and food" and "Social health insurance" as more interesting than did patients less than 40 years old (P < 0.05). When data were analysed according to gender, female patients rated the questions on aesthetic dental care as more interesting than did male patients (P < 0.01), whereas male patients rated questions on toothbrushing as more interesting than did female patients (P < 0.05). CONCLUSIONS: Patients assessed "Age-specific care to maintain oral health" as the highest priority among a broad range of research topics. This study also quantified patient priorities for research agendas according to age and gender group. Designing future research with these priorities in mind will promote patient-centred evidence.

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We aimed to obtain greater understanding of dentists' distress when they diagnose and treat patients with temporomandibular disorders (TMD), and to explore ways in which TMD can be better treated.We conducted a cross-sectional study based on a questionnaire survey of dentists (n = 148). Dentists were queried using an open-ended questionnaire about distress they experienced when treating patients with TMD. Survey responses were analyzed using mixed methods. Associations between specific dentist and patient characteristics and types of distress were analyzed by one way analysis of variance and residual analysis.One hundred thirteen clinicians responded to the questionnaire, giving a 76% response rate. Thematic analysis identified 6 major themes: difficulty in predicting therapeutic effect and prognosis; difficulty in diagnosis; difficulty in the decision about whether to do occlusal adjustment; difficulty in specifying a cause; difficulty in communicating with patients and mental factors; and health insurance system barriers. Clinicians who reported difficulty in deciding whether to do occlusal adjustment saw significantly more patients who experienced shoulder stiffness and headache (P = .008 and P = .022, respectively). Dentists' knowledge of TMD guidelines was associated with a lower percentage of difficulty in predicting therapeutic effect and prognosis (residual analysis; P = .010).These findings provide important insights into clinician's perception of difficulties with patients experiencing TMD-related pain. Knowledge of the existence of TMD clinical practice guidelines may lower dentist distress, particularly with regard to prognosis. Further studies are needed to decrease dentist's distress and to overcome the evidence-practice gap in TMD treatment.

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AIMS: To quantify the practice patterns of Japanese dentists in the management of pain related to temporomandibular disorders (TMD) and to identify specific characteristics that are significantly associated with the decision to perform occlusal adjustment for TMD-related pain. METHODS: A cross-sectional study was conducted consisting of a questionnaire survey of dentists affiliated with the Dental Practice-Based Research Network Japan (JDPBRN) (n = 148). Participants were asked how they diagnosed and treated TMD-related pain. Associations between dentist characteristics and the decision to perform occlusal adjustment were analyzed via multiple logistic regression. RESULTS: A total of 113 clinicians responded to the questionnaire (76% response rate), and 81% of them (n = 89) had treated TMD during the previous year. Dentists treated an average of 1.9 ± 1.8 (mean ± SD) patients with TMD-related pain per month. Most JDPBRN dentists used similar diagnostic protocols, including questions and examinations. The most frequent treatments were splints or mouthguards (96.5%), medications (84.7%), and self-care (69.4%). Occlusal adjustment for TMD-related pain was performed by 58% of the participants. Multiple logistic regression analysis identified two factors significantly associated with the decision to perform occlusal adjustment: dentist lack of confidence in curing TMD-related acute pain (odds ratio [OR] 5.60; 95% confidence interval [CI] 1.260 to 24.861) and proportion of patients with severe TMD-related pain (OR 0.95; 95% CI 0.909 to 0.999). CONCLUSION: The most common treatments for TMD-related pain were reversible treatments; however, over half of the dentists performed occlusal adjustment for TMD-related pain. The results of this study suggest that an evidence-practice gap exists for occlusal adjustment for TMD-related pain.

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RATIONALE, AIMS AND OBJECTIVES: The objectives of this study were to: (1) examine differences in the use of dental clinical practice guidelines among Japanese dentists, and (2) identify characteristics associated with the number of guidelines used by participating dentists. METHODS: We conducted a cross-sectional study consisting of a questionnaire survey in Japan between July 2014 and May 2015. The study queried dentists working in outpatient dental practices who are affiliated with the Dental Practice-Based Research Network Japan (n = 148). They were asked whether they have used each of 15 Japanese dental clinical guidelines. Associations between the number of guidelines used by participants and specific characteristics were analysed via negative binomial regression analysis. RESULTS: The mean number of guidelines used by participating dentists was 2.5 ± 2.9 [standard deviation (SD)]. Rate of use of guidelines showed substantial variation, from 5% to 34% among dentists. The proportion of dentists that used guidelines was the highest among oral medicine specialists, who had the highest proportion for 10 of 15 guidelines. Negative binomial regression analysis identified three factors significantly associated with the number of guidelines used: 'years since graduation from dental school', 'specialty practice' and 'practice busyness'. CONCLUSIONS: These results suggest that the use of clinical practice guidelines by Japanese dentists may still be inadequate. Training in the use of the guidelines could be given to dental students as undergraduate education and to young clinicians as continuing education.

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PURPOSE: The study aims were: (i) to examine dentist practice patterns regarding treatment recommendations for dental sealants; and (ii) to identify characteristics associated with this recommendation. METHODS: The study was performed using a cross-sectional questionnaire survey (Clinicaltrials.gov registration number NCT01680848). Participants were Japanese dentists (n = 282) recruited from the Dental Practice-based Research Network Japan. Three clinical photographs of the occlusal surface of a mandibular first molar were presented, portraying increasing depths of cavitation in a 12-year-old patient with high caries risk. Sealants would be an appropriate treatment in all three scenarios. We asked about the treatment decision for each case. We then performed multiple logistic regression analyses to evaluate associations between the decision to recommend sealants, and dentist, patient and practice characteristics. RESULTS: Responses were obtained from 189 dentists (response rate = 67%). In the hypothetical scenarios, dentists' recommendations for sealants for the 12-year-old patient varied from 16% to 26% across the three hypothetical clinical scenarios. Multiple logistic regression analysis indicated that dentist agreement with the efficacy of assessment for caries risk showed a significant association with the percentages of patients receiving sealants. CONCLUSIONS: Dentist practice patterns for sealant treatment recommendation show changes that are dependent on caries severity. The dentists' recommendations for sealants for the 12-year-old patient were low for all three selected scenarios, based on indications for sealants in the American Dental Association guidelines. Recommending a sealant showed a significant relationship with the dentist having a higher agreement with efficacy of caries risk assessment.

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OBJECTIVE: The aims of this study were to examine dentists' recommendations for in-office fluoride to patients and identify dentists' characteristics associated with these recommendations. STUDY DESIGN AND SETTING: The study was conducted using a cross-sectional questionnaire survey in Japan. The survey queried dentists (n = 282) in outpatient dental practices affiliated with the Dental Practice-based Research Network Japan (JDPBRN). This network aims to assist dentists in investigating research questions and sharing their experience and expertise. RESULTS: The responses were obtained by 189 dentists (67 percent). Among valid response, 54 percent of dentists (n = 98) recommend in-office fluoride to more than 50 percent of their patients aged 6-18 years and 15 percent (n = 29) recommended this care to more than 50 percent of their patients aged over 18 years. Multiple logistic regression analysis suggested that factors associated with the percentage of patients who are recommended in-office fluoride included patient's interest in caries prevention and dentist's belief in the effectiveness of caries risk assessment. CONCLUSIONS: Dentist practice patterns for recommending in-office fluoride vary widely. Recommendation was significantly related to having a higher percentage of patients interested in caries prevention and to the dentist's belief about the effectiveness of caries risk assessment. (Clinicaltrials.gov registration number NCT01680848).

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OBJECTIVES: (i) To quantify the importance that dentists place on caries risk factors when developing a caries treatment plan and (ii) to test the hypothesis that the ratings of importance for specific factors are significantly associated with whether or not the dentist performs caries risk assessment (CRA). METHODS: This study used a cross-sectional study design consisting of a questionnaire survey. The study queried dentists who worked in outpatient dental practices who were affiliated with the Dental Practice-Based Research Network Japan (JDPBRN), which seeks to engage dentists in investigating research questions and sharing experiences and expertise (n = 282). Participants (n = 189) were asked to rate the importance of caries risk factors when developing a caries treatment plan in both adult and pediatric patients. RESULTS: Oral hygiene status was rated as the most important risk factor when developing a treatment plan in both adult and pediatric patients, whereas the use of fluorides was rated as the least important. Results of multiple logistic regression analysis showed that the odds ratios for the decision to perform CRA in the adult patient for past caries experience and use of fluorides were 2.61 (95% confidence interval [CI]: 1.29-5.29) and 1.85 (95% CI: 1.12-3.04), respectively, whereas that for oral hygiene was 3.84 (95% CI: 1.15-12.79) and use of fluorides 1.79 (95% CI: 1.06-3.03) in the pediatric patient. CONCLUSIONS: These results suggest that enhancing dentists' concept of the importance of current use of fluorides when developing a treatment plan may increase the percentage of dentists who conduct CRA in both adult and pediatric patients (clinicaltrials.gov registration number: NCT01680848).

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OBJECTIVES: To identify factors associated with dry mouth. BACKGROUND: Dry mouth adversely affects oropharyngeal health, particularly in elderly, and can lead to pneumonia. A better understanding of the epidemiology of dry mouth is therefore important in improving treatment strategies and oral health in high-risk elderly patients. METHODS: We conducted a cross-sectional study involving 383 dependent Japanese elderly individuals (65-84 [n = 167] and ≥85 [n = 216] years) at eight long-term care facilities and hospitals. Thirty-four potential factors associated with dry mouth were examined by multiple logistic regression analysis. The primary outcome was dry mouth, as diagnosed by tongue dorsum moisture. RESULTS: We identified that body mass index and severity of physical disability were identified as a potential factors associated with dry mouth in the super-elderly (≥85 years) group, whereas severity of physical disability, outcome measurement time, high daily water consumption, mouth breathing, use of antidepressants and diuretics, and high frequency of daily brushing (≥2 times per day; Odds ratio: 5.56; 95% Confidence Interval: 1.52-20.00) were associated with dry mouth in the 65- to 84-year-old group. CONCLUSION: To our knowledge, this is the first study to identify a link between frequency of daily brushing and dry mouth and suggests that tooth brushing should be encouraged in high-risk dependent Japanese elderly (65-84 years), particularly those taking antidepressants and/or diuretics.

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OBJECTIVE: The purposes of this study were to (1) quantify dentists' practice patterns regarding caries prevention and (2) test the hypothesis that certain dentists' characteristics are associated with these practice patterns. DESIGN: The study used a cross-sectional study design consisting of a questionnaire survey. PARTICIPANTS: The study queried dentists who worked in outpatient dental practices who were affiliated with the Dental Practice-Based Research Network Japan, which seeks to engage dentists in investigating research questions and sharing experiences and expertise (n=282). MEASUREMENT: Dentists were asked about their practice patterns regarding caries preventive dentistry. Background data on patients, practice and dentist were also collected. RESULTS: 38% of dentists (n=72) provided individualised caries prevention to more than 50% of their patients. Overall, 10% of the time in daily practice was spent on caries preventive dentistry. Dentists who provided individualised caries prevention to more than 50% of their patients spent significantly more time on preventive care and less time on removable prosthetics treatment, compared to dentists who did not provide individualised caries prevention. Additionally, they provided oral hygiene instruction, patient education, fluoride recommendations, intraoral photographs taken and diet counselling to their patients significantly more often than dentists who did not provide individualised caries prevention. Multiple logistic regression analysis suggested that the percentage of patients interested in caries prevention and the percentage of patients who received hygiene instruction, were both associated with the percentage of patients who receive individualised caries prevention. CONCLUSIONS: We identified substantial variation in dentists' practice patterns regarding preventive dentistry. Individualised caries prevention was significantly related to provision of other preventive services and to having a higher percentage of patients interested in caries prevention, but not to the dentist's belief about the effectiveness of caries risk assessment. (Clinicaltrials.gov registration number NCT01 680 848).

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BACKGROUND: Dental caries are largely preventable, and epidemiological evidence for a relationship between diet and oral health is abundant. To date, however, dentists' perceptions about the role of diet and dentists' practice patterns regarding diet counseling have not been clarified. OBJECTIVE: THE PURPOSES OF THIS STUDY WERE TO: (1) examine discordance between dentists' perception of the importance of diet in caries treatment planning and their actual provision of diet counseling to patients, and (2) identify dentists' characteristics associated with their provision of diet counseling. DESIGN: The study used a cross-sectional study design consisting of a questionnaire survey in Japan. PARTICIPANTS: The study queried dentists working in outpatient dental practices who were affiliated with the Dental Practice-Based Research Network Japan (JDPBRN), which aims to allow dentists to investigate research questions and share experiences and expertise (n = 282). MEASUREMENT: Dentists were asked about their perceptions on the importance of diet and their practice patterns regarding diet counseling, as well as patient, practice, and dentist background data. RESULTS: The majority of participants (n = 116, 63%) recognized that diet is "more important" to oral health. However, among participants who think diet is "more important" (n = 116), only 48% (n = 56) provide diet counseling to more than 20% of their patients. Multiple logistic regression analysis suggested that several variables were associated with providing diet counseling; dentist gender, practice busyness, percentage of patients interested in caries prevention, caries risk assessment, and percentage of patients who receive blood pressure screening. CONCLUSIONS: Some discordance exists between dentists' perception of the importance of diet in caries treatment planning and their actual practice pattern regarding diet counseling to patients. Reducing this discordance may require additional dentist education, including nutritional and systemic disease concepts; patient education to increase perception of the importance of caries prevention; or removing barriers to practices' implementation of counseling. TRIAL REGISTRATION: ClinicalTrials.gov NCT01680848.

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RATIONALE, AIMS AND OBJECTIVES: We developed a novel Internet-based blended learning programme that allows busy health care professionals to attain core competency in clinical research. This study details the educational strategies and learning outcomes of the programme. METHOD: This study was conducted at Kyoto University and seven satellite campuses from September 2009 to March 2010. A total of 176 health care professionals who had never attempted to attain core competency in clinical research were enrolled. The participants were supplied with a novel programme comprising the following four strategies: online live lectures at seven satellite campuses, short examinations after each lecture, an Internet-based feedback system and an end-of-course examination. We assessed the proportion of attendance at the lectures as the main outcome. In addition, we evaluated interaction via the feedback system and scores for end-of-course examination. RESULTS: Of the 176 participants, 134 (76%) reported working more than 40 hours per week. The mean proportion of attendance over all 23 lectures was 82%. A total of 156 (89%) participants attended more than 60% of all lectures and were eligible for the end-of-course examination. A total of the participants accessed the feedback system 3564 times and asked 284 questions. No statistically significant differences were noted in the end-of-course scores among medical doctors, pharmacists, registered nurses and other occupations. CONCLUSIONS: We developed an Internet-based blended learning programme providing core competency in clinical research. Most busy health care professionals completed the programme successfully. In addition, the participants could attain the core competency effectively, regardless of their occupation.

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OBJECTIVE: To examine the association between degree of underreporting energy intake and psychosocial (including interpersonal and personal) factors among hemodialysis patients in Japan. DESIGN: We conducted a cross-sectional study. Predictors of difference were identified using multiple linear regression analysis. SETTING: Study was conducted at a public hospital and a dialysis clinic in a single district in northeast Honshu, Japan. SUBJECTS: Participants were hemodialysis outpatients. Patients aged more than 20 years and undergoing treatment for end-stage renal disease for at least 6 months were included. Exclusion criteria were diagnosis of depression, a mental disease, or dementia. MAIN OUTCOME: The outcome measure was the difference in reported energy intake defined by the differences between a brief administered dietary history questionnaire and diet record stratified by standardized weight. RESULTS: Seventy patients undergoing hemodialysis participated (44 men [62.9%] and 26 women [37.1%]). Of these, 54.3% underreported energy intake (by >10%). Sex (male) and employment status (employed) were statistically associated with energy intake underreporting. A lower score of dialysis staff encouragement was associated with greater energy intake underreporting (ß coefficient = 3.89 kcal/standardized weight, 95% confidence interval: 0.89 to 6.90; P = .012). CONCLUSION: Degree of underreporting energy intake is significantly associated with interpersonal psychosocial factors among hemodialysis patients in Japan. The interpersonal relationship with encouragement by the dialysis staff is important in improving the accuracy of reporting energy intake among dialysis patients.

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BACKGROUND: Mortality rates in Osaka for cardiac arrest after witnessed ventricular tachycardia (VT) or ventricular fibrillation (VF) have decreased dramatically. We sought to estimate the contribution of changes in out-of-hospital care to this decrease. METHODS: We applied a previously validated statistical model, IMPACT, to data obtained from the Utstein Osaka Project, which registers all cardiopulmonary arrests in Osaka. The outcome was death within the first month after the arrest. Sensitivity analysis was conducted by simulating an increase in the use of public access defibrillators (PADs). RESULTS: From 1999 through 2008, age- and sex-adjusted standardized 1-month mortality fell from 88.6% to 57.1%. There were 105 fewer deaths than expected in 2008 (295 deaths). The IMPACT model explained 62.5% of the decrease (67 deaths) in the 1-month mortality. The main contributors to the decrease in mortality were an increase in the use of biphasic waveform defibrillators, and a shortened time to first shock. These were partly offset by an increase in the administration of epinephrine by emergency medical services personnel. According to the simulation, an increase in PAD use from 1.9% to 34.4% would reduce mortality from the observed 57.1% to 49.5%. CONCLUSIONS: Modeling suggests that improvement in out-of-hospital care accounted for approximately 60% of the decline in deaths following witnessed VT or VF arrests in Osaka between 1999 and 2008. Increased usage of PADs could further improve these outcomes.

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RATIONALE: The theory of self-efficacy states that specific efficacy expectations affect behaviour. Two types of efficacy expectations are described within the theory. Self-efficacy expectations are the beliefs in the capacity to perform a specific behaviour. Outcome expectations are the beliefs that carrying out a specific behaviour will lead to a desired outcome. OBJECTIVE: To develop and examine the reliability and validity of an outcome expectancy scale for self-care (OESS) among periodontal disease patients. METHODS: A 34-item scale was tested on 101 patients at a dental clinic. Accuracy was improved by item analysis, and internal consistency and test-retest stability were investigated. Concurrent validity was tested by examining associations of the OESS score with the self-efficacy scale for self-care (SESS) score and plaque index score. Construct validity was examined by comparing OESS scores between periodontal patients at initial visit (group 1) and those continuing maintenance care (group 2). RESULTS: Item analysis identified 13 items for the OESS. Factor analysis extracted three factors: social-, oral- and self-evaluative outcome expectancy. Cronbach's alpha coefficient for the OESS was 0.90. A significant association was observed between test and retest scores, and between the OESS and SESS and plaque index scores. Further, group 2 had a significantly higher mean OESS score than group 1. CONCLUSION: We developed a 13-item OESS with high reliability and validity which may be used to assess outcome expectancy for self-care. A patient's psychological condition with regard to behaviour and affective status can be accurately evaluated using the OESS with SESS.

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PURPOSE: This study's purpose was to develop a task-specific self-efficacy scale for maternal oral care (SESMO) with reliability and validity. METHODS: A draft scale consisting of 36 items was designed and tested on 119 mothers at a dental clinic. Item analysis was performed to improve its accuracy by reducing the number of items. Internal consistency and test and retest stability were investigated. Concurrent validity was tested by examining associations of the SESMO score with the: general self-efficacy scale (GSES) score; number of decayed teeth; and frequency of tooth-brushing for children. Construct validity was examined by comparing the SESMO scores between mothers of children with caries at initial visit (Group 1) and those continuing regular dental checkups (Group 2). RESULTS: The item analysis selected 16 items for the SESMO. Alpha coefficient of the SESMO was 0.82. Significant correlation was observed between tests and retests (r=0.74). There were significant associations between the SESMO score and GSES score (r=0.39); number of decayed teeth (r=-0.33); and frequency of brushing children's teeth (r=0.66). Group 2 had a significantly higher SESMO score than Group 1 (P<.001). CONCLUSIONS: The SESMO showed high reliability and validity. This scale might endure with research applications in pediatric dental practice.

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AIM: To examine whether or not oral health care-specific self-efficacy can predict loss to follow-up for long-term periodontal treatment. METHODS: Our prospective cohort study enrolled 144 patients with chronic periodontitis. Patient self-efficacy was assessed on the initial visit using the self-efficacy scale for self-care (SESS). Participants were then followed for 30 months from the onset of periodontal treatment. The loss to follow-up is the main outcome variable. Multiple logistic regression analysis was conducted to examine the association between self-efficacy for self-care and loss to follow-up for periodontal treatment. Gender, age, number of teeth, probing depth, plaque control record (PCR) value, PCR improvement rate, general self-efficacy scale score, and SESS score were used as the independent variables, and loss to follow-up as a dependent variable. RESULTS: A total of 67 patients were lost to follow-up over the course of the study. Compared with the high-scoring SESS group (60-75), the odds ratio of loss to follow-up for the middle- (54-59) and low-scoring groups (15-53) were 1.05 [95% confidence interval (CI): 0.36-3.07] and 4.56 (95% CI: 1.11-18.74), respectively. CONCLUSION: Assessment of oral health care-specific self-efficacy may be useful in predicting loss to follow-up in long-term periodontal treatment.

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