Japanese young adults' attitudes toward suicide and its influencing factors.

This study investigated young Japanese adults' attitudes toward suicide and factors affecting them. Results revealed that 28.78% of respondents had serious suicidal ideation history; 18.53% knew suicidal others; and 15.29% took suicide-prevention training. A t-test showed that respondents' "Right to suicide" and "Common occurrence" scores were higher with suicidal ideation history, but "Unjustified behavior" was lower than in those without history. Results indicated that certain young adults were unsupportive by being permissive of suicide due to their suicidal ideation or becoming bystanders due to inexperience. For young Japanese adults, enhancing preventive education to alter permissive/bystander attitudes is crucial.

[THE COURSE OF ASTHMA SYMPTOMS IN JAPANESE CHILDREN; THE FIRST REPORT FROM A MULTICENTER PROSPECTIVE COHORT STUDY].

BACKGROUND: The use of asthma control guidelines and anti-inflammatory drugs have significantly decreased the number of severe asthma cases including death from asthma. However, there are few prospective cohort studies among pediatric asthma patients in Japan describing the course of asthma symptoms with the treatment taken into consideration. METHOD: We recruited a total of 851 children diagnosed with asthma through 90 hospitals and clinics in 2004 to 2006. Questionnaires were posted annually to collect data on their asthma symptoms, treatment and environmental exposures. We analyzed the disease course in the first 5 years among the children who were registered at age 4 or younger. RESULTS: The disease course of a total of 641 children, aged 2.8+/-1.1 (mean+/-SD) at registration were analyzed. The proportion of children who had intermittent symptoms increased from 37.6% at registration to 86.5% at 5 years, and the proportion of children with intermittent severity increased from 7.0% to 38.9%, showing a significant decrease in the overall severity. The proportion of children using ß2 stimulants decreased from 87.8% at registration to 53.5% at 5 years, while the use of inhaled cortico-steroids were 41.6% at registration and 38.1% at 5 years. CONCLUSION: Most of the children with pre-school onset asthma had their symptoms controlled, and had decreased severity over 5 years.

Environmental factors associated with childhood eczema: Findings from a national web-based survey.

BACKGROUND: Genetic and environmental factors are known to be related to the development of childhood eczema. Our aim was to assess the environmental factors associated with the prevalence of eczema among children using a web-based survey. METHODS: In June 2012, we conducted a nation-wide web-based survey to identify the prevalence and characteristics of allergic diseases among Japanese children. The prevalence of allergic diseases including eczema was assessed using the International Study of Asthma and Allergies in Childhood core questionnaire. The associations between eczema prevalence and environmental factors, as well as those between background characteristics and comorbid allergic diseases among 6-12 year old children were assessed. RESULTS: A total of 28,348 children were included in the analysis. The prevalence of current eczema was 13.0%. Current eczema was significantly associated with a higher prevalence of wheeze, rhinitis, and food allergy. In multiple logistic regression models, birth during autumn (aOR: 1.18 95%CI: 1.06-1.31) or winter (aOR: 1.21 95%CI: 1.08-1.34), duration of exclusive breastfeeding for at least 6 months (aOR: 1.14 95%CI: 1.06-1.23), and ownership of a pet from infancy (aOR: 2.61 95%CI: 1.68-4.07) were also associated with a higher prevalence of eczema. The prevalence was lower in those with a high annual household income (aOR: 0.90 95%CI: 0.81-0.99) and 2 or more siblings (aOR: 0.86 95%CI: 0.76-0.97). CONCLUSIONS: Duration of breastfeeding, season of birth, pet ownership, household income, and the number of siblings were associated with the prevalence of childhood eczema in a nationwide web survey.

Factors associated with asthma control in children: findings from a national Web-based survey.

BACKGROUND: Although achieving and maintaining control of asthma is considered to be the goal of asthma treatment, determinants of asthma control are not fully understood. Our aim was to assess factors associated with asthma control among paediatric patients in the general population. METHODS: In June 2012, a Web-based survey was conducted to identify Japanese children aged 6 to 11 yr who currently have asthma and evaluate control of their disease using the Childhood Asthma Control Test (C-ACT). Associations were evaluated among uncontrolled asthma (C-ACT score <20) between environmental factors, demographics and comorbid allergic diseases. RESULTS: Among the 3066 children with current asthma, 447 (14.6%) had uncontrolled asthma. Multivariable analysis identified factors such as low birthweight (adjusted OR 1.65, 95% CI 1.25-2.18), obesity (adjusted OR 1.44, 95% CI 1.05-1.99) and pet ownership before birth (adjusted OR 1.68, 95% CI 1.24-2.29) to be associated with uncontrolled disease. Comorbid allergic diseases, especially rhinitis were a significant risk of uncontrolled asthma (adjusted OR for severe rhinitis: 3.88, 95% CI 2.50-6.00). The severity of rhinitis symptoms was inversely correlated with the C-ACT score (p < 0.001). CONCLUSIONS: A population-based Web survey showed an association between several factors and the control of paediatric asthma. The assessment of these factors may help identify the children at risk with uncontrolled asthma.

Time-dependent variation in the responses to the web-based ISAAC questionnaire.

BACKGROUND: Epidemiologic studies have shown seasonal variations in responses to the written questionnaire for rhinitis symptoms. OBJECTIVE: To evaluate whether the timing of data collection affected responses to the International Study of Asthma and Allergies in Childhood (ISAAC) questionnaire in a Web-based study. METHODS: The Web-based ISAAC questionnaires were completed by parents with children 6 to 12 years old using an online research system. The authors conducted surveys of asthma symptoms every month for 1 year and surveys of rhinitis and eczema symptoms every season throughout 1 entire year. RESULTS: There was a significant fluctuation in the positive responses to questions about wheezing in the past 12 months (P < .001) but not in the positive responses to questions about exercise-induced wheezing in the past 12 months and asthma ever (P = .75 and P = .15, respectively). The positive responses to questions about rhinitis and allergic rhinoconjunctivitis in the past 12 months and pollinosis ever exhibited significant seasonal variations (P = .002, P < .001, and P < .001, respectively). In contrast, there were no significant variations in positive responses regarding eczema in the past 12 months and eczema ever (P = .33 and P = .55, respectively). CONCLUSION: There were time-dependent fluctuations in responses to the Web-based questionnaire regarding allergic symptoms. Timing of data collection should be taken into account when evaluating prevalence of asthma and rhinitis in children.