Neighborhood Conditions Research Articles

Neighborhood Characteristics and Elevated Blood Pressure in Older Adults

The local environment remains an understudied contributor to elevated blood pressure among older adults. Untargeted approaches can identify neighborhood conditions interrelated with racial segregation that drive hypertension disparities. To evaluate independent associations of sociodemographic, economic, and housing neighborhood factors with elevated blood pressure. In this cohort study, the sample included Health and Retirement Study participants who had between 1 and 3 sets of biennial sphygmomanometer readings from 2006 to 2014 or 2008 to 2016. Statistical analyses were conducted from February 5 to November 30, 2021. Fifty-one standardized American Community Survey census tract variables (2005-2009). Elevated sphygmomanometer readings over the study period (6-year period prevalence): a value of at least 140 mm Hg for systolic blood pressure and/or at least 90 mm Hg for diastolic blood pressure. Participants were divided 50:50 into training and test data sets. Generalized estimating equations were used to summarize multivariable associations between each neighborhood variable and the period prevalence of elevated blood pressure, adjusting for individual-level covariates. Any neighborhood factor associated (Simes-adjusted for multiple comparisons P ≤ .05) with elevated blood pressure in the training data set was rerun in the test data set to gauge model performance. Lastly, in the full cohort, race- and ethnicity-stratified associations were evaluated for each identified neighborhood factor on the likelihood of elevated blood pressure. Of 12 946 participants, 4565 (35%) had elevated sphygmomanometer readings (median [IQR] age, 68 [63-73] years; 2283 [50%] male; 228 [5%] Hispanic or Latino, 502 [11%] non-Hispanic Black, and 3761 [82%] non-Hispanic White). Between 2006 and 2016, a lower likelihood of elevated blood pressure was observed (relative risk for highest vs lowest tertile, 0.91; 95% CI, 0.86-0.96) among participants residing in a neighborhood with recent (post-1999) in-migration of homeowners. This association was precise among participants with non-Hispanic White and other race and ethnicity (relative risk, 0.91; 95% CI, 0.85-0.97) but not non-Hispanic Black participants (relative risk, 0.97; 95% CI, 0.85-1.11; P = .48 for interaction) or Hispanic or Latino participants (relative risk, 0.84; 95% CI, 0.65-1.09; P = .78 for interaction). In this cohort study of older adults, recent relocation of homeowners to a neighborhood was robustly associated with reduced likelihood of elevated blood pressure among White participants but not their racially and ethnically marginalized counterparts. Our findings indicate that gentrification may influence later-life blood pressure control.

Mother’s knowledge for environmental risks and self-awareness for the presence of pollutants in her living area in West and Central Anatolia: a cross-sectional survey

BackgroundEnvironmental risk awareness is a key concept to raise awareness and plan future programs for environmental protection. A cross-sectional household survey aimed to find out the presence of environmental hazards next to living area and the mother’s knowledge levels about environmental risk factors with their related factors according to district development ranking, and Western and Central Anatolian regions with sampling from rural and urban residence.MethodThe study was designed with household sampling weighted according to population density in 2008. Data on the demography and health status, dwelling characteristics of the residents are also collected in 2009. In addition, open-ended questions "What does environmental risk/hazard mean?" and "Which environmental risks/hazards are present in your environment?" were asked. The data collected from the survey were analyzed using multivariate binary logistic regression. ResultsThe sample included 3489 mothers living either in urban or rural areas. Of the mothers, 19.3% did not know what an environmental risk is and 75.7% stated that there was at least one environmental pollutant in their environment. The most commonly perceived risk factor was air pollution (23.0%), which was reported to be present in their living areas by 12.4%. Regions, residence, settlement features of the house, and health status of family members were associated with the perception of environmental risk at a statistically significant level.ConclusionThe neighborhood conditions and health status of family associated with the mother’s awareness for environmental risk factors. Communication and cooperation between local governments, health institutions, non-governmental organizations and other stakeholders should be strengthened to increase risk awareness.

Neighborhood Condition Effects on Latina/O Student Attendance and Participation in Afterschool Activities

ABSTRACT This study examined how parents’ perception of neighborhood conditions are associated with school absenteeism and participation in afterschool activities, and how social support networks moderate those linkages among two-parent and single-parent families. Data from the second and third Waves of the Making Connections Survey were analyzed. A subsample of 1,053 Latina/o parents with 10–17-year-old children was examined. Longitudinal path analyses suggest an indirect positive association between neighborhood control and participation in organized afterschool activities via instrumental social support, but only among two-parent families. Neighborhood cohesion was associated with school days missed and participation in organized afterschool activities among single-parent families. Implications for practice and policy are discussed.

Perceived Neighborhood Disorder, Self-Esteem, and the Moderating Role of Religion.

A growing body of work links neighborhood conditions -and particularly perceived neighborhood disorder-with diverse aspects of psychosocial functioning, including self-esteem or the global moral self-worth of the individual. Our work augments this literature by investigating the possible roles of (a) organizational religiosity (i.e., religious attendance, religious support), (b) non-organizational religiosity (i.e., prayer and religious coping practices), and (c) the sense of divine control as potential stress in mitigating the deleterious effects of neighborhood disorder on self-esteem. Data from the Nashville Stress and Health Study (NSAHS, 2011-2014) are used to test a series of hypotheses regarding the possible stress-buffering effects of multiple religious domains. Findings from multivariable regression models indicate that: (a) perceived neighborhood disorder is inversely associated with self-esteem; (b) non-organizational religiosity and the sense of divine control each mitigate this pattern; and, interestingly, (c) organizational religiosity does not buffer the association between neighborhood disorder and self-esteem. Several study limitations, as well as a number of promising directions for future research, are identified.

The relationship between neighborhood typologies and self-rated health in Maryland: A latent class analysis.

Despite widespread evidence that neighborhood conditions impact health, few studies apply theory to clarify the physical and social factors in communities that drive health outcomes. Latent class analysis (LCA) addresses such gaps by identifying distinct neighborhood typologies and the joint influence that neighborhood-level factors play in health promotion. In the current study, we conducted a theory-driven investigation to describe Maryland neighborhood typologies and examined differences in area-level self-rated poor mental and physical health across typologies. We conducted an LCA of Maryland census tracts (n=1384) using 21 indicators of physical and social characteristics. We estimated differences in tract-level self-rated physical and mental health across neighborhood typologies using global Wald tests and pairwise comparisons. Five neighborhood classes emerged: Suburban Resourced (n=410, 29.6%), Rural Resourced (n=313, 22.6%), Urban Underserved (n=283, 20.4%), Urban Transient (n=226, 16.3%), Rural Health Shortage (n=152, 11.0%). Prevalence of self-rated poor physical and mental health varied significantly (p<0.0001) by neighborhood typology, with the Suburban Resourced neighborhood class demonstrating the lowest prevalence of poor health and the Urban Underserved neighborhoods demonstrating the poorest health. Our results highlight the complexity of defining "healthy" neighborhoods and areas of focus to mitigate community-level health disparities to achieve health equity.

Measures of Neighborhood Opportunity and Adherence to Recommended Pediatric Primary Care

Neighborhood conditions are known to broadly impact child health. Research to date has not examined the association of the Childhood Opportunity Index (COI), a multidimensional indicator of neighborhood environment conditions, specifically with pediatric primary care outcomes. To determine the association of neighborhood opportunity measured by the COI with health metrics commonly captured clinically in pediatric primary care, reflecting both access to preventive care and child well-being. This cross-sectional observational study used electronic health record data from a large pediatric primary care network in the northeastern US. Participants included patients aged 0 to 19 years who were active in the primary care network between November 2020 and November 2022. Data were analyzed in December 2022. Census tract-level COI overall score (in quintiles). Outcomes included up-to-date preventive care and immunization status and presence of obesity, adolescent depression and suicidality, and maternal depression and suicidality. Multivariable mixed-effects logistic regressions estimated associations of these outcomes with COI quintiles, adjusted for age, sex, race and ethnicity, and insurance type. Among 338 277 patients (mean [SD] age, 9.8 [5.9] years; 165 223 female [48.8%]; 158 054 [46.7%] non-Hispanic White, 209 482 [61.9%] commercially insured), 81 739 (24.2%) and 130 361 (38.5%) lived in neighborhoods of very low and very high COI, respectively. Living in very high COI neighborhoods (vs very low COI) was associated with higher odds of being up-to-date on preventive visits (odds ratio [OR], 1.40; 95% CI, 1.32-1.48) and immunizations (OR, 1.77; 95% CI, 1.58-2.00), and with lower odds of obesity (OR, 0.55; 95% CI, 0.52-0.58), adolescent depression (OR, 0.78; 95% CI, 0.72-0.84) and suicidality (OR, 0.79; 95% CI, 0.73-0.85), and maternal depression (OR, 0.78; 95% CI, 0.72-0.86) and suicidality (OR, 0.71; 95% CI, 0.61-0.83). This cross-sectional study of electronic health record data found that neighborhood opportunity was associated with multiple pediatric primary care outcomes. Understanding these associations can help health systems identify neighborhoods that need additional support and advocate for and develop partnerships with community groups to promote child well-being. The findings underscore the importance of improving access to preventive care in low COI communities.

Virtual Implementation of a Photovoice Project With Youth in Baltimore During the COVID-19 Pandemic.

This article describes the virtual implementation of Photovoice activities conducted as part of a project that sought to gather youths' perspectives on neighborhood and housing conditions, community redevelopment, and health and well-being in Baltimore. We discuss the original in-person design and how activities were implemented virtually, in light of coronavirus disease 2019 (COVID-19) physical distancing guidelines. Challenges to virtual implementation included establishing rapport with youth and families during recruitment and data collection, encouraging active participation during discussion sessions, and varying technological skills among youth. Facilitators of virtual implementation included partnering with a community organization, piloting virtual sessions to assess participant's technology skills, and providing various ways for youth to participate during discussion sessions, engage in group activities, and receive hands-on instruction. This article showcases the ways in which virtual implementation of Photovoice activities can be successfully implemented with youth and provides recommendations for future Photovoice projects that include virtual activities.

Neighborhood Unsafety, Discrimination, and Food Insecurity among Nigerians Aged 15-49.

We investigated the association between discrimination, neighborhood unsafety, and household food insecurity (FI) among Nigerian adults, as well as the gender-specific differences in these associations. Our analysis utilized data from the 2021 Multiple Indicator Cluster Survey (MICS), comprising 56,146 Nigerian adults aged 15-49 (17,346 males and 38,800 females). For bivariate analysis, we employed the Rao-Scott chi-square test to examine the relationship between predictors (discrimination, neighborhood unsafety, and a composite variable of both) and the outcome variable (FI). Food insecurity was assessed using both a dichotomous measure (food insecure vs. food secure) and a multinomial variable (food secure, mild FI, moderate FI, and severe FI). To model the association between predictors and FI while controlling for potential confounding factors, we utilized weighted binary and multinomial logistic regression. Among Nigerian adults, the prevalence of having ever experienced FI was 86.1%, with the prevalence of mild FI, moderate FI, and severe FI being 11.5%, 30.1%, and 44.5%, respectively. In the binary model, experiencing discrimination (OR = 1.36, 95% CI = 1.19-1.55), living in an unsafe neighborhood (OR = 1.33, 95% CI = 1.14-1.54), and facing both discrimination and unsafe neighborhood conditions (OR = 1.97, 95% CI = 1.57-2.48) were significantly associated with FI. In the multinomial model, discrimination, neighborhood unsafety, and experiencing both remained associated with moderate and severe FI. In the gender-specific models, discrimination and neighborhood unsafety were found to be significantly associated with FI in women but not in men. This study underscores the importance of implementing policies and programs that address the underlying causes of food insecurity, with specific attention to discrimination and neighborhood safety concerns, particularly for Nigerian women.

Properly colored and rainbow C4 ${C}_{4}$'s in edge‐colored graphs

AbstractWe present new sharp sufficient conditions for the existence of properly colored and rainbow 's in edge‐colored graphs. Our first results deal with sharp color neighborhood conditions for the existence of properly colored 's in edge‐colored complete graphs and complete bipartite graphs, respectively. Next, we characterize the extremal graphs for an anti‐Ramsey number result due to Alon on the existence of rainbow 's in edge‐colored complete graphs. We also generalize Alon's result from complete to general edge‐colored graphs. Finally, we derive a structural property regarding the extremal graphs for a bipartite counterpart of Alon's result due to Axenovich, Jiang, and Kündgen on the existence of rainbow 's in edge‐colored complete bipartite graphs. We also generalize their result from complete to general bipartite edge‐colored graphs.

The damages of stigma, the benefits of prestige: Examining the consequences of perceived residential reputations on neighbourhood attachment

This study examines how perceived residential reputations – that is, how people think non-residents assess the reputation of their neighbourhood – affect neighbourhood attachment, including residents’ sense of belonging, local civic membership, social relationships and compliance with social rules and norms in the neighbourhood. We focus on Santiago, the capital city of Chile: a highly segregated context. We use data from the Chilean Longitudinal Social Survey (ELSOC, 2016–2019) and information on neighbourhood characteristics. Results show that perceived residential reputations affect neighbourhood attachment, even after adjusting for time-invariant individual heterogeneity and lagged dependent variables. Specifically, perceived stigma reduces residents’ neighbourhood identification, physical rootedness, trust and sociability with neighbours, while positive perceived reputations improve these components of neighbourhood attachment, although to a lesser extent. However, perceived residential reputations do not affect the formation of strong ties between neighbours or local participation, suggesting that residential reputations mainly influence affective components of neighbourhood attachment. We conclude that perceived residential reputations reinforce the influence of individual characteristics and objective neighbourhood conditions in producing diverging patterns of neighbourhood attachment, with broader implications for social inequality in the city.

Analysis of conditions for selecting the number of teeth of planetary gearboxes

The issues of selecting the number of teeth for 2k-h type A mechanisms based on the study of the known conditions for their assembly used in the development of planetary gearboxes of various shipboard both deck and main power ship installations are highlighted in the paper. Considering the design practice, when selecting the number of teeth, it is important to maintain a given gear ratio, ensure the alignment of the mechanism gears, withstand the condition of the neighborhood of satellites, ensure the assembly condition and the absence of interference of internal gearing. These conditions are expressed in terms of the number of teeth of gears and impose restrictions on the parameters of 2k-h mechanisms. Checking the interference condition of internal gearing at the stage of selecting the number of teeth in existing methods is usually not done, but it is performed at the stage of checking the quality of gearing according to geometric conditions. With this approach, the selection of tooth numbers is considered as a problem solved by the method of successive approximations: selection of tooth numbers — calculation of geometric dimensions — checking the quality of gearing — selection of a new combination of tooth numbers, etc. The condition of interference of internal gearing obtained in the work is represented by a closed formula, which eliminates the use of the iteration method, which requires a large amount of computational work and allows it to be tested at an early stage of product development. The neighborhood condition is expressed by an equation in which the design parameter is associated with the maximum possible number of satellites and a guaranteed gap between their initial circles. It makes it possible to theoretically explain well-known constructions that do not agree with the theoretical views existing at that time. The alignment condition allows for both an even and an odd difference in the number of teeth of the central wheels. Thus, the results obtained make it possible to solve the problems of creating a mechanism with the maximum possible number of satellites for reducing the size of a planetary mechanism as a unit completing a marine gearbox of any complexity, to expand the set of possible combinations of the teeth numbers that provide a given design and require less computational work.

Supplemental Nutrition Assistance Program Education reductions during COVID-19 may have exacerbated health inequities

ObjectiveDescribe, and assess disparities in, the changes in Supplemental Nutrition Assistance Program Education (SNAP-Ed) that occurred the year before vs. the year when COVID-19 restrictions were implemented. DesignObservational study comparing reach, intensity, and dose of California Local Health Department (LHD) SNAP-Ed interventions in Federal Fiscal years 2019 and 2020 (FFY19, FFY20). AnalysisStudent t-tests determined significance of differences in the number of Direct Education (DE) programs, Policy, Systems and Environmental change (PSE) sites, people reached, and intervention intensity and dose between FFY19 and FFY20 using data reported online by LHDs. Linear regression assessed associations between census tract-level characteristics (urbanicity; percentages of population with income <185% of federal poverty level, under 18 years of age, and belonging to various racial/ethnic groups; and California Healthy Places Index) and changes in number of DE programs, PSE sites, people reached, and intervention dose between FFY19 and FFY20. ResultsFrom FFY19 to FFY20, the number of DE programs, PSE sites, people reached, and census tract-level intervention intensity and dose decreased. Higher census tract poverty, higher proportions of Black and Latino residents, and less healthy neighborhood conditions were associated with greater decreases in some intervention characteristics including PSE sites, PSE reach, DE programs, and DE dose. Conclusions and implicationsThese reductions in LHD SNAP-Ed interventions indicate reduced access to education and environments that support healthy eating and obesity prevention during a time when this support was especially needed to reduce risk of COVID-19 infection and complications. Disproportionately reduced access, may have worsened health disparities in already-disadvantaged communities. Assuring maintenance of SNAP-Ed interventions, especially in disadvantaged communities, should be a priority during public health emergencies.

Green infrastructure inequality in the context of COVID-19: Taking parks and trails as examples

Urban green infrastructures play a critical role in enhancing the well-being of residents, yet their equitable access remains a concern, particularly during the COVID-19 outbreak. There is a lack of knowledge on how people respond to the pandemic regarding the usage of green infrastructure in cities. This paper explores the shifts in visitation to parks and trails, two popular types of green infrastructures in Salt Lake County, Utah, by analyzing the results of a survey conducted during the pandemic. Our conceptualization considers personal and neighborhood level factors, including personal socioeconomic status, existing inequalities of green infrastructures, urban form, and neighborhood conditions. People who reside close to the city center tend to go to parks more often, while those living in urban edges use trails more. Visiting green infrastructures less often is more likely in areas with higher COVID-19 infection rates. The regression results confirm the importance of neighborhood level factors and illustrate the intricate elements influencing people's decisions to visit different green infrastructures during the pandemic, which shows non-linear relationships. Wealthier, white, and younger people seem to enjoy green infrastructures more often, leading to the concern of amplified inequality. Higher COVID-19 cases result in higher demands for green infrastructures, which are not fulfilled during the pandemic, especially for vulnerable communities, leading to spatial exclusion. The findings highlight the importance of smart growth, including compact development, public transit, and pocket parks, in promoting the urban resilience of park and trail visits, as they may provide more opportunities for access and alternatives to green infrastructures even in the context of the pandemic.

Neighborhood Conditions and Resources in Mid-Childhood and Dampness and Pests at Home in Adolescence

To examine prospectively associations of neighborhood opportunity with the presence of dampness or pests in the home environment during early adolescence. We geocoded residential addresses from 831 children (mean age 7.9years, 2007-2011) in the Project Viva cohort. We linked each address with census tract-level Child Opportunity Index scores, which capture neighborhood conditions and resources influencing child heath including educational, health, environmental, and socioeconomic factors. Our primary outcome was presence of dampness or pests in the home in early adolescence (mean age 13.2years, 2013-2016). Secondary outcomes included current asthma and lung function testing results. Mixed-effects regression models estimated longitudinal associations of Child Opportunity Index scores with outcomes, adjusting for individual and family sociodemographics. Children residing in neighborhoods with greater overall opportunity were less likely to live in homes with dampness or pests approximately 5years later (aOR0.85 per 20-unit increase in Child Opportunity Index percentile rank, 95% CI 0.73-0.998). We observed no significant associations in adjusted models of overall neighborhood opportunity with current asthma or lung function. Lower school poverty or single-parent households and greater access to healthy food or economic resource index were associated with lower odds of a home environment with dampness or pests. More favorable neighborhood conditions in mid-childhood were associated with lower likelihood of living in a home with dampness or pests in the early adolescence.

Perceived Neighborhood Conditions, Psychosocial Factors, and Sleep Problems Among Urban and Rural Older Adults in China.

To examine the associations between perceived neighborhood conditions and older Chinese adults' sleep problems, and whether these associations are mediated by psychosocial factors and moderated by urban-rural residence. Data were from the World Health Organization Study on global Ageing and Adult Health. We used OLS, binary, and multinomial logistic regression analyses. Karlson-Holm-Breen decomposition method was used to test mediation effects. Positively perceived neighborhood social cohesion was associated with fewer insomnia symptoms and decreased odds of poor sleep quality, sleepiness, lethargy, and short sleep duration. Positively perceived neighborhood safety was related to decreased risks of poor sleep quality and sleepiness. Depression and perceived control partially mediated the effects of perceived neighborhood on sleep. Furthermore, the protective effects of neighborhood cohesion against sleep problems were more pronounced among older urban adults than their rural counterparts. Interventions that make neighborhoods safer and more integrated will improve late-life sleep health.

Multi-pathway assessment of fecal contamination in urban areas of Abidjan: The case of Abobo municipality

The presence of septic tank effluents in open spaces and roads due to poor fecal sludge management (FSM) in low-income cities represents a source of fecal contamination and potential risk of fecal-oral disease transmission. This study aimed at assessing fecal contamination exposure through six exposure pathways in Abobo, District of Abidjan in Côte d’Ivoire. The public health risk was evaluated in two clusters to identify the dominant exposure pathways and to compare which populations were most exposed. The SaniPath approach used included behavioral surveys (transect walk, household survey, school survey and community survey) and laboratory analysis. Surveys were conducted among 200 households, 6 schools and 4 community groups. In addition, 120 environmental samples were collected (in 2 clusters of 6 pathways with 10 samples per pathway per cluster). The colony forming unit (CFU) of E. coli was determined in samples using the surface plating technique on agar medium. Bayesian analyses were performed to estimate the distributions of fecal concentration and contact frequency, and exposure to fecal contamination was estimated using the Monte Carlo method with 1000 iterations. The highest concentrations of E. coli were observed in open drains (6.1 log CFU/ml), gullies (6 log CFU/ml) and soil (5.8 log CFU/ml) samples. The dominant exposure pathways were determined by multiplying the dose and the percentage of the population exposed, which was then log-transformed and denoted by (E). The study found that street food and gullies are the two dominant exposure pathways among the population living in Abobo. 100% of the children and between 73% and 91% of the adults are exposed to these dominant pathways in low and poor areas. In middle and high-income areas this concerns 75% to 95% of children and between 26% and 70% of adults. As well, the risk of exposure to the dominant pathways hits 9.2 in children and 8.6 for adults living in poor areas. While it reaches 8.1 and 7.1 respectively in children and adults living in middle and high-income areas. The study outcomes could help the authorities to structure how to target municipal wide interventions toward improving the sanitation conditions in the different neighborhoods.

The effects of contemporary redlining on the mental health of Black residents

Understanding how structural racism, including institutionalized practices such as redlining, influence persistent inequities in health and neighborhood conditions is still emerging in urban health research. Such research often focuses on historical practices, giving the impression that such practices are a thing of the past. However, mortgage lending bias can be readily detected in contemporary datasets and is an active form of structural racism with implications for health and wellbeing. The objective of the current study was to test for associations among multiple measures of mental health and a measure of contemporary redlining. We linked a redlining index constructed using Home Mortgage Disclosure Act data (2007–2013) to 2021 health data for Black/African American participants in the Study of Active Neighborhoods in Detroit (n = 220 with address data). We used multilevel regression models to examine the relationship between redlining and a suite of mental health outcomes (perceived stress, anxiety, depressive symptoms, and satisfaction with life), accounting for covariates including racial composition of the neighborhood. We considered three mediating factors: perceived neighborhood cohesion, aesthetics, and discrimination. Although all participants lived in redlined neighborhoods compared to the complete Detroit Metropolitan area, participants with very low income, low levels of experienced discrimination, and lower perceptions of neighborhood aesthetics resided in highly redlined neighborhoods (score ≥5). We observed that higher resident-reported neighborhood aesthetics were found in neighborhoods with lower redlining scores and were associated with higher levels of satisfaction with life. We found that lower levels of redlining were significantly associated with higher levels of perceived discrimination, which was significantly, positively associated with anxiety, depressive symptoms, and perceived stress scores. Our findings highlight that contemporary redlining practices may influence the aesthetics of the built environment because these neighborhoods experience less investment, with implications for residents’ satisfaction with life. However, areas with lower redlining may be areas where Black/African American people experience increased perceived discrimination.

Examining the interactive effects of neighborhood characteristics and environmental conditions on height-to-diameter ratio of Chinese fir based on random forest

In forest dynamics modeling and estimation, the nonlinear relationship between response and explanatory variables is often concerned, while the interaction among variables is neglected. Height-to-diameter ratio (HDR) is an important indicator for evaluating tree stability and performance. Based on the data from 112 forest inventory plots across Hunan province, China, we modeled the HDR of Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) by using random forest and examined the interactive effects of neighborhood variables (neighborhood competition, density and mean diameter) and environmental conditions (dominant height, topography and climate) on the HDR of Chinese fir. Neighborhood competition contributed the most to HDR variation and affected HDR positively. Dominant height and elevation also had a strong influence on HDR. Furthermore, the changes in HDR were jointly dominated by neighborhood features and environmental conditions. For example, HDR varied from 50.5 to 80.3 under the interactive influence of neighborhood competition and dominant height, but varied from 56.8 to 70.2 under the influence of neighborhood competition alone. The relationship between HDR and neighborhood variables might be mediated by environmental conditions, while neighborhood variables did not change the overall trend of HDR responses to environmental factors. When the dense Chinese fir stand is located at low elevation (<500 m) or rich sites (>20 m), frequent and systematic thinning should be carried out in the early stages of forest development. Our findings can provide guidance for managing Chinese fir forests to improve their stability.

Oral health, quality of life and associated factors in adults in a southern Brazilian city

It was verified the association between oral health, quality of life and associated factors in a population in a southern Brazilian city. Cross-sectional study with 373 dwellers of the Ferraria District, Campo Largo, PR, Brazil, that answered a questionnaire with sociodemographic, socioeconomic, quality of life, habits, general and oral health, and Oral Health Impact Profile (OHIP-14) variables. Statistical analysis was performed in a univariate and multivariate way (significance level of 5%). In the univariate analysis, 47.7% of individuals had OHIP-14&gt; 12. Worse impacts were reported by olders, women, non-white, divorced or widowed, with lower education and income, worse self-classification of quality of life and general health, depressive, with worse neighborhood conditions, who brush their teeth less and with more need for dental treatment. In the multivariate analysis, olders, female, non-white, presnce of caries or gingival problems and poor self-classification of quality of life reported worse impacts. The worst impacts was associated with sociodemographic, socioeconomic, psychosocial and behavioral variables, which indicates the need for actions to improve several aspects of the population of the Ferraria District.

The biological embedding of adversity and inequity: Examining the physiological impacts of discrimination and poverty on ethnically and economically minoritized youths

Structural and social inequities have long been recognized as major contributors to mental and physical health problems. The biological embedding hypothesis, or the idea of “stress getting under the skin,” suggests that these adverse effects are conveyed through neurobiological mechanisms. Yet, we are in the early stages of empirical examination of the diverse and complex ways in which inequities can affect psychophysiological development. In this presentation, I will review recent and new research by my colleagues, students and I that utilizes the California Families Project, an ongoing longitudinal study of a large sample of Mexican-origin families in California that began when target youths were in Grade 5 and has followed these youths into emerging adulthood. Although adolescence often is considered a period of prime physical health, these studies document the associations of multiple structural and social determinants of health, including family poverty, peer discrimination, school violence, neighborhood conditions, and pollutant exposure, with the functioning of multiple neurobiological systems, including the brain, adrenocortical system, autonomic nervous system, and immune system. Collectively, this evidence reveals that the pervasive and pernicious influences of structural and social inequities on neurobiological development are evident within adolescence, which may portend and convey risk for a breadth of health problems across adulthood.