Is adjustment for reporting heterogeneity necessary in sleep disorders? Results from the Japanese World Health Survey.

BACKGROUND: Anchoring vignettes are brief texts describing a hypothetical character who illustrates a certain fixed level of a trait under evaluation. This research uses vignettes to elucidate factors associated with sleep disorders in adult Japanese before and after adjustment for reporting heterogeneity in self-reports. This study also evaluates the need for adjusting for reporting heterogeneity in the management of sleep and energy related problems in Japan. METHODS: We investigated a dataset of 1002 respondents aged 18 years and over from the Japanese World Health Survey, which collected information through face-to-face interview from 2002 to 2003. The ordered probit model and the Compound Hierarchical Ordered Probit (CHOPIT) model, which incorporated anchoring vignettes, were employed to estimate and compare associations of sleep and energy with socio-demographic and life-style factors before and after adjustment for differences in response category cut-points for each individual. RESULTS: The prevalence of self-reported problems with sleep and energy was 53 %. Without correction of cut-point shifts, age, sex, and the number of comorbidities were significantly associated with a greater severity of sleep-related problems. After correction, age, the number of comorbidities, and regular exercise were significantly associated with a greater severity of sleep-related problems; sex was no longer a significant factor. Compared to the ordered probit model, the CHOPIT model provided two changes with a subtle difference in the magnitude of regression coefficients after correction for reporting heterogeneity. CONCLUSION: Sleep disorders are common in the general adult population of Japan. Correction for reporting heterogeneity using anchoring vignettes is not a necessary tool for proper management of sleep and energy related problems among Japanese adults. Older age, gender differences in communicating sleep-related problems, the presence of multiple morbidities, and regular exercise should be the focus of policies and clinical practice to improve sleep and energy management in Japan.

Performance of p16INK4a/Ki-67 immunocytochemistry for identifying CIN2+ in atypical squamous cells of undetermined significance and low-grade squamous intraepithelial lesion specimens: a Japanese Gynecologic Oncology Group study.

BACKGROUND: p16(INK4a) immunohistochemistry has revealed a high rate of positivity in cervical intraepithelial neoplasia grade 2 (CIN2) and more severe conditions (CIN2+). The Lower Anogenital Squamous Terminology Standardization project proposed p16(INK4a) immunohistochemistry as an ancillary test for CIN. Immunocytochemistry involving dual staining for p16(INK4a) and Ki-67 in the triage of atypical squamous cells of undetermined significance (ASCUS) and low-grade squamous intraepithelial lesions (LSIL) is reported to be useful in the identification of CIN2+. However, it is unclear whether p16(INK4a)/Ki-67 immunocytochemistry is of practical relevance for the triage of ASCUS and LSIL in the Japanese screening system. METHODS: From 427 women fulfilling the eligibility criteria, 188 ASCUS and 239 LSIL specimens were analyzed. The accuracy of p16(INK4a)/Ki-67 immunocytochemistry and genotyping of high-risk human papillomaviruses (HPVs) in detecting CIN2+ were compared. RESULTS: p16(INK4a)/Ki-67 immunocytochemistry was positive in 33.5 % (63/188) of ASCUS, and 36.8 % (88/239) of LSIL specimens. The sensitivity and specificity of p16(INK4a)/Ki-67 immunocytochemistry was 87.3 % (95 % confidence interval 78.0-93.8 %) and 76.4 % (71.6-80.8 %), respectively. The positive and negative predictive values were 45.7 % (37.6-54.0 %) and 96.4 % (93.4-98.3 %), respectively; positive and negative likelihood ratios were 3.71 and 0.17, respectively. Using the McNemar test, p16(INK4a)/Ki-67 immunocytochemistry showed equivalent sensitivity but higher specificity than the HPV genotyping test CONCLUSIONS: Compared with high-risk HPV genotyping, p16(INK4a)/Ki-67 immunocytochemistry was a more accurate triage test for identifying CIN2+ in ASCUS and LSIL specimens.

High total serum cholesterol, medication coverage and therapeutic control: an analysis of national health examination survey data from eight countries.

OBJECTIVE: To determine the fraction of individuals with high total serum cholesterol who get diagnosed and effectively treated in eight high- and middle-income countries. METHODS: Using data from nationally representative health examination surveys conducted in 1998-2007, we studied a probability sample of 79 039 adults aged 40-79 years from England, Germany, Japan, Jordan, Mexico, Scotland, Thailand and the United States of America. For each country we calculated the prevalence of high total serum cholesterol (total serum cholesterol ≥ 6.2 mmol/l or ≥ 240 mg/dl) and the mean total serum cholesterol level. We also determined the fractions of individuals being diagnosed, treated with cholesterol-lowering medication and effectively controlled (total serum cholesterol < 6.2 mmol/l or < 240 mg/dl). FINDINGS: The proportion of undiagnosed individuals was highest in Thailand (78%; 95% confidence interval, CI: 74-82) and lowest in the United States (16%; 95% CI: 13-19). The fraction diagnosed but untreated ranged from 9% in Thailand (95% CI: 8-11) to 53% in Japan (95% CI: 50-57). The proportion being treated who had attained evidence of control ranged from 4% in Germany (95% CI: 3-5) to 58% in Mexico (95% CI: 54-63). Time series estimates showed improved control of high total serum cholesterol over the past two decades in England and the United States. CONCLUSION: The percentage of people with high total serum cholesterol who are effectively treated remains small in selected high- and middle-income countries. Many of those affected are unaware of their condition. Untreated high blood cholesterol represents a missed opportunity in the face of a global epidemic of chronic diseases.

Development and applicability of Hospital Survey on Patient Safety Culture (HSOPS) in Japan.

BACKGROUND: Patient safety culture at healthcare organizations plays an important role in guaranteeing, improving and promoting overall patient safety. Although several conceptual frameworks have been proposed in the past, no standard measurement tool has yet been developed for Japan. METHODS: In order to examine possibilities to introduce the Hospital Survey on Patient Safety Culture (HSOPS) in Japan, the authors of this study translated the HSOPS into Japanese, and evaluated its factor structure, internal consistency, and construct validity. Healthcare workers (n = 6,395) from 13 acute care general hospitals in Japan participated in this survey. RESULTS: Confirmatory factor analysis indicated that the Japanese HSOPS' 12-factor model was selected as the most pertinent, and showed a sufficiently high standard partial regression coefficient. The internal reliability of the subscale scores was 0.46-0.88. The construct validity of each safety culture sub-dimension was confirmed by polychoric correlation, and by an ordered probit analysis. CONCLUSIONS: The results of the present study indicate that the factor structures of the Japanese and the American HSOPS are almost identical, and that the Japanese HSOPS has acceptable levels of internal reliability and construct validity. This shows that the HSOPS can be introduced in Japan.

Prevention and Control of COVID-19 in Imperfect Condition: Practical Guidelines for Nursing Homes by Japan Environment and Health Safety Organization (JEHSO).

Infection control at nursing homes is a top priority to address the COVID-19 pandemic because people who are the most vulnerable to the pathogen live in close contact. Currently, control measures specifically for nursing homes often ignore under-resourced condition of the facilities. To make guidelines assuming realistic conditions, an expert meeting with 16 members established the key challenges in nursing homes, the basics of infection control, and the major transmission routes. A list of existing guidance was compiled and each item in the list was peer-reviewed by eight experts considering three aspects: significance, scientific validity, and feasibility. Factors related to the nursing home environment, the nature of SARS-CoV-2 transmission, and patient characteristics were identified as the causes of difficulties in infection control at nursing homes. To develop realistic prevention measures in under-resourced condition such as nursing homes, we may need to accept there are no perfect control measures that can achieve zero risk. Instead, the guidelines are based on the concept of deep defense, and practical checklists with 75 items were established. The evaluation of nursing homes by independent organizations using the checklists would be helpful to achieve sustainable infection control.

Understanding the decline of mean systolic blood pressure in Japan: an analysis of pooled data from the National Nutrition Survey, 1986-2002.

OBJECTIVE: To assess the relationships between the observed drop in mean systolic blood pressure (SBP) in Japan in 1986-2002 and the use of antihypertensive treatment and lifestyle factors. METHODS: A nationally representative sample of 90,554 men and 101,903 women aged 20 years and over was obtained from pooled data of annual cross-sectional surveys in Japan during 1986-2002. Using two-stage least squares with an instrumental variable, we examined the association between SBP and antihypertensive medication and lifestyle factors, including body mass index (BMI), physical activity, alcohol consumption, cigarette smoking and dietary salt intake. In the surveys, regular exercise was defined as exercise for more than 30 minutes at a time more than twice a week for over 1 year. Current smoking was defined as either daily or occasional cigarette use. Current drinking was defined as an intake of more than one standard cup of Japanese sake, one large bottle of regular beer, or one double measure of whisky at a time more than three times a week. Changes in mean predicted SBP in each sex and age group between 1986 and 2002 were decomposed into the respective contributions of these explanatory variables. FINDINGS: Age-specific means of predicted SBP declined during this period by 1.8 (95% confidence interval, CI: 1.2-2.5) to 3.0 (95% CI: 2.4-3.6) mmHg in men and 3.7 (95% CI: 3.4-4.1) to 5.1 (95% CI: 4.5-5.7) mmHg in women. These reductions were partly explained by the increased use of medications across all sex and age groups and decreased mean BMI in women in their 30s and 40s. The contributions of treatment effects increased with age. Elevated mean BMI in men and elderly women offset part of the decline of their mean SBP. CONCLUSION: Declining mean SBP in Japan between 1986 and 2002 was partly attributable to the increased use of antihypertensive medications, especially in the older population, and lowered mean BMI in young women. However, a substantial part of the decline was left unexplained and needs to be investigated further. A still greater decline in SBP would be expected through improvements in body weight management, salt and alcohol intake, and treatment and control of hypertension.

Relative and combined performance of mammography and ultrasonography for breast cancer screening in the general population: a pilot study in Tochigi Prefecture, Japan.

BACKGROUND: Breast cancer screening by mammography is thought to be effective in reducing breast cancer mortality while ultrasonography is not accepted as a population screening modality, although the latter has been suggested to be useful in detection of cancer in the dense breast, relatively more typical for a younger woman. METHODS: Mammography with medio-lateral oblique view was offered on trial in 1999-2000 for 3453 female residents in Tochigi prefecture who also underwent clinical breast examination and ultrasonography. The municipalities that provided cancer screening were informed of the final diagnosis for women with positive findings in the screening trial by doctors who performed the diagnostic evaluation. Linkage was also made between the list of participants in the trial and registrations at Tochigi Cancer Registry for breast cancer cases diagnosed during 1999-2001. RESULTS: Thirteen cases with breast cancer were identified during a 2-year follow-up period: 10 were diagnosed subsequent to positive finding in the trial; two were negative in the trial and diagnosed 23 and 24 months after, respectively; and one had a positive finding at the trial but was undiagnosed at first and then diagnosed 18 months after the trial. Among the 11 cases judged as positive in the trial, four were judged only by mammography while three were judged only by ultrasonography. Those mammography alone-detected cases were relatively young, at 36, 40, 47 and 54 years of age, respectively, while the ultrasonography alone-detected cases were aged 50, 55 and 68, respectively. CONCLUSIONS: Combined screening with mammography and ultrasonography may be feasible. A larger study is required to evaluate relative performance of mammography and ultrasonography in detail by characteristics of examinees and their breasts.

Vignettes and differential health reporting: results from the Japanese World Health Survey.

We examined the factors associated with the evaluation of health description vignettes and how Japanese people make decisions related to the eight health dimensions (mobility, emotions, pain, relationship with others, sleep and energy, vision, recognition/remembering abilities, and self-care). We investigated a dataset of 4,959 respondents (≥ 18 years) from the Japanese World Health Survey. Ordered probit models were used to identify factors associated with all health dimensions. On all dimensions, older people appraised extreme problems as less problematic than young people did. Compared with men, women reported greater severity in the case of extreme problems on three health dimensions: emotion, pain, and sleep/energy. The study also found negative effects of alcohol consumption in almost all dimensions. Doctors and other health care workers should be careful when assessing severity of health problems in older individuals; in this population, health problems may be more severe than reported.

Health promotion policies in the Republic of Korea and Japan: a comparative study.

Health promotion strategies have been developed and implemented in some Asian countries, particularly in the Republic of Korea (Korea) and Japan. It would help to understand features of health promotion in each country to compare health promotion strategies between them. In this study, using categories developed by HP-Source.net, we conducted a comparative analysis of health promotion strategies between Korea and Japan to understand features of health promotion in each country and contribute to the improvement of population health. One of the goals of Health Plan 2010 is to assess its achievements with numerical targets, which is also the case in Japan. One of the important discussion points involves a decision on the optimal number of targets for evaluation. There is a major difference in the funding of health promotion activities between Korea and Japan. They are financed through the general account in Japan, while in Korea a foundation for health promotion has been established and the income from tobacco tax is ring-fenced for this fund. The database and methodology of HP-Source needs adaptation for global use. We encountered some disadvantages in using its current framework for comparing and analysing information on health promotion in Korea and Japan. It has been recognised that HP-Source could influence the development and implementation of health promotion strategies in other parts of the world. Health promotion tools can help decision makers, planners and researchers to formulate and enhance comprehensive plans. In this study we learned many lessons in expanding policy tools outside of one region to aid the global development of effective health promotion policy and practice.

Statistical estimation of the number of breast cancer patients with disabilities resulting from surgery.

BACKGROUND: The prolongation of the post-operative life of cancer patients brings new medical demands. The purpose of this paper is to estimate the total number of women patients with breast cancer who will have disability resulting from surgical treatment from 2000 to 2020 in Japan. METHODS: The estimation was carried out using four indices: the number of cases of women diagnosed with breast cancer, the proportion of surgical operations, the frequency of disability from surgical treatment, and the crude survival rate of the patient group. The crude survival rates of surgically-treated breast cancer patients were estimated by the Weibull model. The frequencies of iatrogenic disabilities were calculated from several reports of complaints of pain in the chest wall or axilla and lymphedema of the arm, and 95% confidence intervals were calculated by the Monte Carlo simulation. RESULTS AND DISCUSSION: The number of women patients with disability from breast cancer treatment from 2000 to 2020 was estimated to be 42,016 (95% CI: 41,236, 42,796) people in 2000 and 72,514 (95% CI: 71,196, 73,832) people in 2020 for pain in the chest wall or axilla, and 22,486 (95% CI: 22,148, 22,823) people in 2000 and 38,692 (95% CI: 38,094, 39,290) people in 2020 for lymphedema of the arm. Treatment supports required for the disability are medication and social support. Cancer patients with disability after treatment need long-term support in their daily life.

Are the rates of hypertension and diabetes higher in people from lower socioeconomic status in Bangladesh? Results from a nationally representative survey.

OBJECTIVE: A well-established belief regarding inequalities in health around the world is that hypertension and diabetes are higher in groups of lower socioeconomic status. We examined whether rates of hypertension, diabetes, and the coexistence of hypertension and diabetes are higher in people from a lower socioeconomic status than in those from a higher socioeconomic status in Bangladesh. METHODS: We investigated a nationally representative dataset from the 2011 Bangladesh Demographic and Health Survey with objective measures for hypertension and diabetes. A wealth index was constructed from data on household assets using principal components analysis. Chi-square tests and logistic regressions were performed to test the associations between wealth level, hypertension and diabetes. FINDINGS: People from the highest wealth quintile were significantly more likely to have hypertension (Adjusted odds ratios [AOR] = 1.65, 95% confidence interval [CI] = 1.22-2.25), diabetes (AOR = 1.81, 95% CI = 1.21-2.71), and the coexistence of hypertension and diabetes (AOR = 2.17, 95% CI = 1.05-4.49) than people from the lowest wealth quintile. The odds of having hypertension, diabetes, and their coexistence were higher for older people, women, people who engaged in less physical labor, and people who were overweight and obese. CONCLUSION: Wealthier people, particularly people from the fourth and highest wealth quintiles, should be careful to avoid unhealthy lifestyles to prevent hypertension and diabetes. Health policy makers and planners are urged to target wealthier strata in terms of hypertension and diabetes initiatives while paying special attention to older people, women, people who engage in less physical labor, and individuals who are overweight.

Human Papillomavirus Test for Triage of Japanese Women With Low-Grade Squamous Intraepithelial Lesions.

We evaluated high-risk human papillomavirus (HR-HPV) DNA testing for high-grade cervical intraepithelial neoplasia (CIN) lesions by cobas HPV test and diagnostic HPV16/18 genotyping in Japanese women with low-grade squamous intraepithelial lesions. Of 357 patients, HR-HPV positivity prevalence was 75.6%, and 21.3% had grade 2 or higher CIN lesions (CIN2+), with the highest prevalence at 30 to 34 years. Negative predictive values of HR-HPV for CIN2+ in our patients were 93.1% (any age) and 94.9% (40-50 years). Absolute risk for CIN2+ in HR-HPV positive and HPV16/18 positive individuals was 25.9 and 35.1, respectively. Relative risk for CIN2+ lesions was 5.1 for HPV16/18 positive versus HR-HPV negative, and 3.8 for HR-HPV positive versus HR-HPV negative women. Predictive values of CIN2+ positive were higher for HPV16/18 positive women (any age) than 12 other HPV positive-genotypes, and highest (50%) at 40-50 years. The HPV16/18 genotyping might prevent women (>40 years) at risk of high-grade CIN lesions from undergoing unnecessary colposcopy/overtreatment of nonprogressive lesions.

[New directions of patient safety policy in several foreign countries].

The importance of safety in healthcare has long been recognized, but actual policies and actions to prevent medical errors and improve patient safety have not been developed comprehensively. Retrospective studies based on medical records provide evidence of the extent of adverse events in healthcare services. The new trends in policies for patient safety differ radically from the previous ones in that they emphasize the necessity of reforming the entire healthcare system to make patient safety the first priority. To achieve this it is necessary to establish an adequate information system to collect and analyze data in a timely fashion and distribute the results to stakeholders to encourage "Safety Culture" in healthcare industries.

Length of hospital stay in Japan 1971-2008: hospital ownership and cost-containment policies.

The average length of stay (LOS) is considered one of the most significant indicators of hospital management. The steep decline in the average LOS among Japanese hospitals since the 1980s is considered to be due to cost-containment policies directed at reducing LOS. Japan's hospital sector is characterised by a diversity of ownership types. We took advantage of this context to examine different hospital behaviours associated with ownership types. Analysing government data published from 1971 to 2008 for the effect of a series of cost-containment policies aimed at reducing LOS revealed distinctly different paths behind the declines in LOS between privately owned and publicly owned hospitals. In the earlier years, private hospitals focused on providing long-term care to the elderly, while in the later years, they made a choice between providing long-term care and providing acute care with reduced LOS and bonus payments. By contrast, the majority of public hospitals opted to provide acute care with reduced LOS in line with public targets.

Vignettes and differential health reporting: results from the Japanese World Health Survey / Vinhetas e relatos diferenciais na saúde: os resultados do estudo japonês da Pesquisa Mundial de Saúde / Viñetas y relatos diferenciales en la salud: los resultados del estudio japonés de la Encuesta Mundial de Salud

We examined the factors associated with the evaluation of health description vignettes and how Japanese people make decisions related to the eight health dimensions (mobility, emotions, pain, relationship with others, sleep and energy, vision, recognition/remembering abilities, and self-care). We investigated a dataset of 4,959 respondents (≥ 18 years) from the Japanese World Health Survey. Ordered probit models were used to identify factors associated with all health dimensions. On all dimensions, older people appraised extreme problems as less problematic than young people did. Compared with men, women reported greater severity in the case of extreme problems on three health dimensions: emotion, pain, and sleep/energy. The study also found negative effects of alcohol consumption in almost all dimensions. Doctors and other health care workers should be careful when assessing severity of health problems in older individuals; in this population, health problems may be more severe than reported.

Os autores examinaram os fatores relacionados à avaliação das vinhetas para descrição da saúde e as maneiras pelas quais os japoneses tomam decisões nas oito dimensões da saúde (mobilidade, emoção, dor, relacionamento com outros, sono e energia, visão, habilidades de reconhecimento/memória e cuidados próprios). Foi analisado um conjunto de dados de 4.959 indivíduos (≥ 18 anos) do estudo japonês da Pesquisa Mundial de Saúde. O estudo usou modelos probit ordenados para identificar os fatores relacionados a todas as dimensões da saúde. Indivíduos mais idosos demonstravam uma leitura menos problemática dos problemas mais graves. As mulheres relatavam maior gravidade no caso de problemas extremos, em três dimensões da saúde: emoção, dor e sono/energia. O estudo também mostrou efeitos negativos do consumo de álcool em quase todas as dimensões. Médicos e outros profissionais da saúde devem ser criteriosos ao avaliar a gravidade dos problemas de saúde nos idosos, porque neste grupo etário, os problemas podem ser mais graves do que os próprios pacientes relatam.

Los autores examinaron los factores relacionados con la evaluación de las viñetas para la descripción de la salud y las maneras por las que los japoneses toman decisiones en las ocho dimensiones de la salud (movilidad, emoción, dolor, relación con otros, sueño y energía, visión, habilidades de reconocimiento/memoria y cuidados propios). Se analizó un conjunto de datos de 4.959 individuos (≥ 18 años) del estudio japonés de la Encuesta Mundial de Salud. El estudio usó modelos probit ordenados para identificar los factores relacionados con todas las dimensiones de la salud. Los individuos más ancianos demostraban una lectura menos problemática de los problemas más graves. Las mujeres relataban mayor gravedad, en el caso de problemas extremos, en tres dimensiones de la salud: emoción, dolor y sueño/energía. El estudio también mostró efectos negativos del consumo de alcohol en casi todas las dimensiones. Médicos y otros profesionales de la salud deben ser criteriosos al evaluar la gravedad de los problemas de salud en los ancianos, porque en este grupo de edad, los problemas pueden ser más graves de lo que los propios pacientes relatan.

Factors associated with preferences for health system goals in Japan: a pilot study of the World Health Survey.

Preferences among people for health system goals are important determinants in developing health policy. The aim of this study was to determine preferences for health system goals and their associations with sociodemographic characteristics in Japan. Participants were randomly selected from the general population in 5 prefectures and were asked to rank 5 health system goals in order of preference: health, health inequality, responsiveness, responsiveness inequality, and fair financing. Associations between sociodemographic characteristics and preferences for health system goals were examined using multinomial logistic regression analysis. A total of 4936 persons responded to this study. Health system goals in order of preference were health inequality (37.6%), responsiveness inequality (20.9%), health (18.4%), responsiveness (16.0%), and fair financing (7.1%). Sociodemographic characteristics such as gender, age, family status, education completed, and usage of health care services were associated with the preferred health system goal. Health policy makers should take these associations into account when developing prospective policy.

Improving the quality of healthcare in Japan: a systematic review of procedural volume and outcome literature.

Though some policies have been implemented based on volume-outcome relationships in Japan, no studies systematically reviewed volume-outcome research conducted in Japan. Original data used in this study were obtained from MEDLINE searches using PubMed or from searches of the Ichushi database and complemented with manual searches. Two investigators reviewed and scored 13 articles, using a standard form to extract information regarding key study characteristics and results. Of the 13 studies we reviewed, 11 studies sought to detect the effects of hospital volume on outcomes while 2 examined the influence of individual physician volumes. Of the 13 studies, 9 studies (69.2%) indicated a statistically significant association between higher hospital volumes and better health outcomes. No study documented a statistically significant association between higher volumes and poorer outcomes. Higher review score is considered to be associated with significant association. The definition of low volume differed widely in each of the studies we reviewed. The 95%CI of healthcare outcomes is considerable even in studies that revealed a significant difference between volumes and outcomes. Higher hospital volumes are thought to be associated with better aggregate healthcare outcomes in Japan. For this reason, minimal-case-number standards might be effective to some extent. However, volume alone is not sufficient to predict the quality of healthcare. In addition, outcome-based evaluation might also be needed.