Takashi Fujiwara
Dados Biográficos
| ID | 826458 |
|---|---|
| NOME | Takashi Fujiwara |
| PRENOMES | Takashi |
| SOBRENOME | Fujiwara |
| ASSINATURA | FUJIWARA T |
| AFILIAÇÕES | Tokyo Medical and Dental University |
| ORCID | 0000-0002-1074-3954 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 101 |
| TOTAL DE CITAÇÕES | 56 |
| TOTAL COMO AUTOR | 101 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 2008 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2026 |
| ÍNDICE H | 3 |
Social network diversity and Covid-19 infection and severity risk
Background: Clinical evidence on how social network diversity (SND) influences the risk of infection and disease severity during the coronavirus disease 2019 (COVID-19) pandemic remains limited. We aim to investigate the associations between SND and the risk of COVID-19 infection and disease severity using a large-scale longitudinal cohort study. Methods: We analyzed data from participants in a longitudinal study, the Japan COVID-19 and Society I…
Association of pre-adolescent adverse childhood experiences with adolescent cholesterol levels
Background: Adverse childhood experiences (ACEs) are well known to be associated with poor health outcomes in adulthood. However, its effect on adolescent health remains underexplored, particularly, how cumulative ACE exposure during childhood influences cholesterol levels in adolescence. This study aims to investigate the longitudinal association between cumulative ACE exposure during elementary school and cholesterol levels in middle school usi…
The Unexpected Side Effects of Lockdowns on Those Barely Inside and Outside of Lockdown Areas
This study implements a geographical regression discontinuity design to estimate the impact of Japan's anti‐COVID‐19 policy, which imposed what is called “a state of emergency” (SOE). This policy can be considered a ‘mild lockdown’ without any geographical restriction. In January 2021, an SOE was declared in 11 out of Japan's 47 prefectures. We utilised the fact that the risk of infection and other factors were geographically continuous across th…
Association between grit and wellness outcomes among Japanese medical residents
PURPOSE: The well-being of resident physicians is a globally recognized concern, with high rates of burnout, stress, and attrition. Studies proposed grit-a personality trait defined as perseverance and passion for long-term goals-as a protective factor against poor psychological outcomes. Although studies in Western countries have linked grit with lower burnout and depression among residents, evidence from collectivist cultures, such as Japan, re…
Adverse childhood experiences and all-cause mortality in older Japanese adults
Circulating phospholipid species and internet addiction severity in Japanese adolescents
Internet addiction is increasing among adolescents, yet biological markers remain scarce. Lipid metabolism influences neurobehavior, but its association with internet addiction is unclear. Plasma concentrations of 150 phospholipid species from eight classes-phosphatidylinositol (PI), PI3P, PI4P, PI(3,5)P 2 , PI(4,5)P 2 , phosphatidylethanolamine (PE), phosphatidylcholine (PC), and PIP 3 -were quantified in 34 Japanese adolescents (mean ± SD age =…
Large-N’ Paradox
Home cooking, cooking skills and dementia requiring long-term care
BACKGROUND: People have come to rely on restaurants and takeaway foods, and less on cooking at home. We examined the association between home cooking and dementia incidence, ascertained through administrative long-term care records, and whether the benefits of home cooking differ by cooking skills. METHODS: Participants in the Japan Gerontological Evaluation Study, a population-based cohort study, were followed for 6 years. The incidence of demen…
Association between Covid-19 pandemic and school refusal among elementary school children in Japan
Background The coronavirus disease 2019 (COVID-19) pandemic has been reported to have affected children's mental health. However, the impact of the COVID-19 pandemic on school refusal remains unclear. This study examined the association between the early stage of the COVID-19 pandemic and school refusal among elementary school children in Japan using the difference-in-differences approach. Methods Data from the Adachi Child Health Impact of Livin…
Association of communication methods and frequency with BMI among adolescents during the Covid-19 pandemic
Objective: Little is known about the differential impact of communication methods and BMI. Hence, this study aims to examine the association of in-person and online communication with BMI among 13-14-year-old students during the COVID-19 pandemic. Method: = 3,178). A questionnaire was used to assess communication methods and frequency. BMI was categorized into overweight and obesity (≥ + 1SD), normal weight (-1SD to <+1SD) and underweight (<-1SD)…
Prevalence of domestic violence against pregnant women living in rural areas
Heat-related impacts on all-cause emergency hospitalisation differ by area deprivation and urbanicity
BACKGROUND: Climate-related health impacts have been a global public health concern. Identifying vulnerable populations is critical in implementing adaptation strategies. This study aimed to examine how heat-related impacts on all-cause emergency hospitalisations differ by area deprivation and urbanicity. METHODS: All-cause emergency hospitalisations were identified in the Japanese nationwide administrative database during the warm season between…
Cultural interplay shaping the well-being of Ghanaian migrants in Japan during the Covid-19 pandemic
Ghanaian migrants in Japan, who make up the second-largest population of African migrants in the country, may have faced heightened racial prejudice and challenges during the COVID-19 pandemic, impacting their well-being. This study explored cultural factors shaping the well-being of Ghanaians living in Japan during the COVID-19 pandemic through a qualitative study using the socioecological model. From June 2022 to August 2022, 18 in-depth interv…
The risk of self-stigma and discrimination for health care workers in developing countries during the Covid-19 pandemic
Association between Short Stature at Grade 1 and Permanent Teeth Caries at Grade 6 in Elementary School Children in Japan
Short stature in children is a marker of low nutritional status and has been suggested to be associated with dental caries. However, longitudinal studies on this topic are scarce. Data from a longitudinal study of elementary school children in Adachi City, Tokyo, Japan, were analyzed. In 2015, caregivers of children at grade 1 answered questionnaires, and information on dental caries and height measured at school health checkups was merged and fo…
Association between internet use and annual health checkups among older Japanese adults
This study concludes that there is a positive association between Internet use and participation in annual health checkups among older individuals in Japan. The results suggest that Internet use may serve as a tool to promote preventive healthcare practices in older populations. However, the study underscores the need for further investigation to understand the underlying mechanisms of this association and to establish a causal relationship
Childhood Book Availability Helps to Preserve Cognitive Function in Older Adults With Low Education
The availability of books in childhood helps to preserve cognitive function in older adults with low education via left superior temporal cortex volume. Further research is needed to replicate these findings
Association between the number of convenience stores and caries status in permanent teeth among elementary school children
Background In Japan, people have rich access to 24-h convenience stores where they can buy sweets, juice and fluoride hygiene products, among others. However, the association between the number of convenience stores in a neighbourhood and caries in elementary school children status has not been studied. This study aimed to investigate this particular association. Methods Data were derived from a population-based longitudinal cohort study (A-CHILD…
Change of human flourishing during the Covid-19 pandemic in Japan
Longitudinal change in flourishing during the pandemic of COVID-19 would provide new insight to reveal determinants of well-being. We aimed to describe changes in flourishing during the COVID-19 pandemic in Japan and to examine the association of sex, age, education, and income with changes in flourishing. Utsunomiya COVID-19 seROprevalence Neighborhood Association (U-CORONA) study conducted in October 2020 and November 2021 was used (n = 419 in …
Associations of Cooking Skill with Social Relationships and Social Capital among Older Men and Women in Japan
The health benefits of social relationships and social capital are well known. However, little research has examined the determinants of social relationships and social capital. We examined whether cooking skill was associated with social relationships and social capital in older Japanese people. We used 2016 Japan Gerontological Evaluation Study data on a population-based sample of men and women aged ≥ 65 years ( n = 21,061). Cooking skill was a…
Hedonic Risk Preference Associated with High-Risk Behaviors under Covid-19 Pandemic among Medical Students in Japan
Hedonic and general risk preferences were significantly associated with high-risk behaviors during the COVID-19 pandemic. Future application of the novel risk-for-pleasure-seeking preference question is warranted
The Impacts of Legalization of Physician-Assisted Suicide on Binge Drinking Among US Adults
Adverse childhood experiences and living in the socially deprived areas in adulthood
People with higher number of ACEs tend to live in deprived areas in adulthood. Policy makers in highly deprived areas can apply the trauma-informed approach for the community care and support, which is critical to mitigating deficit perspectives and facilitating comprehensive support for those with ACEs
Persistent poverty and child dental caries
BACKGROUND: This study investigated the cumulative impact of persistent poverty on dental caries among elementary schoolchildren in Japan. METHODS: Data were derived from four-wave longitudinal data of children in all public elementary schools in Adachi City, Tokyo, Japan, from 2015 to 2020 (n=4291, response rate: 80.1%-83.8%). Poverty status, defined as annual household income <JPY3 million, material deprivation or payment difficulties for lifel…
Competitiveness, country economic inequality and adolescent well-being
A prospective study of individual-level social capital and major depression in the United States
STUDY OBJECTIVE: To investigate prospectively the associations between depression and cognitive social capital (social trust, sense of belonging, mutual aid) and structural social capital (volunteer work and community participation). METHODS: This was a prospective study that was carried out in the USA. The participants were a nationally representative sample of 724 English-speaking non-institutionalised adults (25-74 years old) who participated …
Do bonding and bridging social capital have differential effects on self-rated health? A community based study in Japan
BACKGROUND: Few studies have examined the potential difference in the relationship between bonding versus bridging social capital and health outcomes. We sought to examine the association between these different types of social capital and self-rated health in a population-based study. METHODS: In February 2009, 4000 residents of Okayama City (aged 20-80 y) were randomly selected for a survey on social capital and health. The survey asked about p…
Is a hilly neighborhood environment associated with diabetes mellitus among older people? Results from the Jages 2010 study
Competitiveness, country economic inequality and adolescent well-being
Do home-visit programs for mothers with infants reduce parenting stress and increase social capital in Japan
BACKGROUND: Distress during child rearing is known as a risk factor for child maltreatment. In addition, it is known that social capital can be a preventive factor for child maltreatment. The purpose of this study is to evaluate whether the home-visit program reduces parenting stress and increases the social capital in the community. METHODS: The home-visit program was implemented when the infants were 1-2 month of age (by public health nurses or…
Childhood Book Availability Helps to Preserve Cognitive Function in Older Adults With Low Education
The availability of books in childhood helps to preserve cognitive function in older adults with low education via left superior temporal cortex volume. Further research is needed to replicate these findings
Relative deprivation and educational aspirations of 15-year-old adolescents in Japan
Degree of influence in class modifies the association between social network diversity and well-being
Social network diversity was beneficial for adolescent physical and mental health, especially for children with perceived lower degree of influence in class
A prospective study of individual-level social capital and major depression in the United States
STUDY OBJECTIVE: To investigate prospectively the associations between depression and cognitive social capital (social trust, sense of belonging, mutual aid) and structural social capital (volunteer work and community participation). METHODS: This was a prospective study that was carried out in the USA. The participants were a nationally representative sample of 724 English-speaking non-institutionalised adults (25-74 years old) who participated …
Multi-level, cross-sectional study of workplace social capital and smoking among Japanese employees
Company-level mistrust is associated with higher likelihood of smoking among Japanese employees, while individual perceptions of mistrust were not associated. The link between lack of reciprocity and smoking was not supported either at the individual- or company-level. Further studies are warranted to examine the possible link between company-level trust and smoking cessation in the Japanese workplace
Do home-visit programs for mothers with infants reduce parenting stress and increase social capital in Japan
BACKGROUND: Distress during child rearing is known as a risk factor for child maltreatment. In addition, it is known that social capital can be a preventive factor for child maltreatment. The purpose of this study is to evaluate whether the home-visit program reduces parenting stress and increases the social capital in the community. METHODS: The home-visit program was implemented when the infants were 1-2 month of age (by public health nurses or…
Do bonding and bridging social capital have differential effects on self-rated health? A community based study in Japan
BACKGROUND: Few studies have examined the potential difference in the relationship between bonding versus bridging social capital and health outcomes. We sought to examine the association between these different types of social capital and self-rated health in a population-based study. METHODS: In February 2009, 4000 residents of Okayama City (aged 20-80 y) were randomly selected for a survey on social capital and health. The survey asked about p…
BMI mediates the association between low educational level and higher blood pressure during pregnancy in Japan
In Japanese women, the low educational group showed higher BP during pregnancy than the mid or high educational groups. Pre-pregnancy BMI mediates the association between educational level and BP
Prevalence of Self-Reported Shaking and Smothering and Their Associations with Co-Sleeping among 4-Month-Old Infants in Japan
Few studies have investigated the prevalence of shaking and smothering and whether they are associated with co-sleeping. In Japan, co-sleeping is common during infancy and early childhood. This study investigates the prevalence of shaking and smothering and their associations with co-sleeping among 4-month-old infants in Japan. A questionnaire was administered to mothers who participated in a 4-month health checkup program in Kamagaya City in Jap…
Association of socioeconomic status in childhood with major depression and generalized anxiety disorder
In Japan, childhood SES is likely to be positively associated with the lifetime onset of mental disorders, regardless of family history of mental disorders, childhood physical illness, or SES in adulthood. Further study is required to replicate the current findings and elucidate the mechanism of the positive association between mental disorders and childhood SES
Factors Influencing Time Lag Between Initial Parental Concern and First Visit to Child Psychiatric Services Among ADHD Children in Japan
Association Between Maternal Postpartum Depression and Unintentional Injury Among 4-Month-Old Infants in Japan
Tobacco price increase and smoking behaviour changes in various subgroups
We confirmed that the tobacco price rise was associated with increasing cessation and decreasing relapse concurrently. Furthermore, this price rise was associated with favourable smoking changes in nearly all population subgroups; a large differential impact was not observed across the various subgroups
Associations between Malocclusion and Oral Health-Related Quality of Life among Mongolian Adolescents
Malocclusion may affect oral health-related quality of life (OHR-QoL), however, the previously detected associations were affected by confounding factors. We hypothesized that there is indeed an association between OHR-QoL and malocclusion and investigated in a population-based study of 420 Mongolian adolescents mean age: 12.6 (standard deviation (SD) = 1.09) years from two secondary schools, located in an urban and a suburban area. We randomly s…
The Multifunctionality of ‘Possible’ Modal Adverbs
The principal concern in this study is to provide a detailed discussion of the pragmatic properties of ‘possible’ modal adverbs, mainly by comparing conceivably with perhaps. First, we identify two factors regarding the occurrence patterns of these modal adverbs: their cooccurrence with modal verbs and their position in the clause, both of which are pragmatic-related characteristics. Two techniques were employed: analysis of manually coded corpus…
The multifunctionality of ‘possible’ modal adverbs
The principal concern in this study is to provide a detailed discussion of the pragmatic properties of ‘possible’ modal adverbs, mainly by comparing conceivably with perhaps. First, we identify two factors regarding the occurrence patterns of these modal adverbs: their cooccurrence with modal verbs and their position in the clause, both of which are pragmatic-related characteristics. Two techniques were employed: analysis of manually coded corpus…
Is a hilly neighborhood environment associated with diabetes mellitus among older people? Results from the Jages 2010 study
Relationship Between Leaving Children at Home Alone and Their Mental Health
Leaving children at home alone is considered a form of "neglect" in most developed countries. In Japan, this practice is not prohibited, probably because this country is considered to have relatively safe communities for children. The impact of leaving children at home alone on their mental health is a controversial issue, and few studies have examined it to date. The aim of this study was to examine the impact of leaving children aged 6 or 7 yea…
Prenatal Alcohol Exposure and Child Psychosocial Behavior
Background: The association between low levels of alcohol consumption during pregnancy and children's health remains unclear because of the difficulty in ruling out residual genetic and environmental confounding factors. In this study, using a within-family sibling fixed effects design, we sought to examine the association between low prenatal alcohol exposures (PAE) and children's overall psychosocial behavior in a Japanese cohort. Methods: We u…
Impact of Parenting Style on Clinically Significant Behavioral Problems Among Children Aged 4–11 Years Old After Disaster
Objective: The purpose of this study was to investigate the influence of parenting style on children's behavior problems after the Great East Japan Earthquake in 2011. Methods: Participants were children exposed to the 2011 disaster at preschool age ( n = 163). Data were collected from August 2012 to March 2013, and from July 2014 to March 2015 (2 and 4 years, respectively, after the earthquake), thus participants were aged 4-11 years when assess…
Long-Term Impact of Parental Post-Traumatic Stress Disorder Symptoms on Mental Health of Their Offspring After the Great East Japan Earthquake
Longitudinal studies of the long-term psychological impact of the Great East Japan Earthquake (GEJE) on parents and their children have been limited. The current study aimed to monitor parents' post-traumatic stress disorder (PTSD) symptoms and behavioral problems among their children over time and to analyze their long-term associations among the survivors of the GEJE. We used data from the GEJE Follow-up for Children study, which recruited 4- t…
Association between Maternal Smoking during Pregnancy and Missing Teeth in Adolescents
Tooth agenesis and disturbance of tooth eruption is the most prevalent oral defect, and is possibly caused by the interaction of genetic and environmental factors. We hypothesized that prenatal factors may affect tooth development. The objective of this study was to examine whether smoking during pregnancy was associated with missing teeth in the offspring during adolescence. The study population comprised pregnant women and their children regist…
Validity of the Japanese Version of the Quick Mild Cognitive Impairment Screen
Early detection of dementia provides opportunities for interventions that could delay or prevent its progression. We developed the Japanese version of the Quick Mild Cognitive Impairment (Q mci -J) screen, which is a performance-based, easy-to-use, valid and reliable short cognitive screening instrument, and then we examined its validity. Community-dwelling adults aged 65−84 in Niigata prefecture, Japan, were concurrently administered the Q mci -…
Pet Ownership and Children’s Emotional Expression
With many children and young adolescents reporting strong emotional bonds with their pets, the impact of pet ownership on child/adolescent health-especially on their emotional development-has garnered increasing scientific interest. We examined the association between pet ownership in toddlerhood (age 3.5 years) and poor emotional expression in later childhood (age 5.5 years) using propensity score matching within a longitudinal cohort dataset fr…
Sekentei and objectively-measured physical activity among older Japanese people
Our findings indicate that an individual's sense of sekentei may be an important socio-cultural factor affecting their level of physical activity. Culturally appropriate approaches may be beneficial in addressing insufficient physical activity in older adults
Higher child-raising costs due to maternal social isolation
Validation of the Japanese version of the Childhood Trauma Questionnaire—Short Form (CTQ–J)
Objective: Facing a surge of child maltreatment reports, Japan has a need for concise assessment tools. Although the Childhood Trauma Questionnaire (CTQ) is accepted internationally as an instrument for childhood maltreatment, its Japanese version has not been validated. The present study examined the validity of the Japanese version of the CTQ (CTQ-J). Method: The CTQ-J was administered to Japanese adolescents in a residential institution (insti…
Association of Existence of Third Places and Role Model on Suicide Risk Among Adolescent in Japan
Objective: Low self-esteem among adolescents can be considered a risk factor for suicidal behavior in adolescents. Thus, the purpose of this study is to investigate the association between the existence of a third place and role model on self-esteem among adolescents in Japan, where low self-esteem is prevalent among adolescents. Methods: We analyzed data from the 2016 Adachi Child Health Impact of Living Difficulty (A-CHILD) study, in which a sc…
Medicine (83 obras) · Psychology (67 obras) · Demography (50 obras) · Environmental health (43 obras) · Demography (38 obras) · Psychiatry (32 obras) · Clinical Psychology (27 obras) · Internal Medicine (27 obras) · Population (27 obras) · Clinical Psychology (26 obras)