Urban Low Socioeconomic Status Research Articles

Schistosome infection is negatively associated with mite atopy, but not wheeze and asthma in Ghanaian Schoolchildren

Epidemiological evidence suggests that helminth infection and rural living are inversely associated with allergic disorders. The aim of the study was to investigate the effect of helminth infections and urban versus rural residence on allergy in schoolchildren from Ghana. In a cross-sectional study of 1385 children from urban-high socio-economic status (SES), urban-low SES and rural schools, associations between body mass index (BMI), allergen-specific IgE (sIgE), parasitic infections and allergy outcomes were analysed. Allergy outcomes were skin prick test (SPT) reactivity, reported current wheeze and asthma. Helminth infections were found predominantly among rural subjects, and the most common were hookworm (9.9%) and Schistosoma spp (9.5%). Being overweight was highest among urban-high SES (14.6%) compared to urban-low SES (5.5%) and rural children (8.6%). The prevalence of SPT reactivity to any allergen was 18.3%, and this was highest among rural children (21.4%) followed by urban-high SES (20.2%) and urban-low SES (10.5%) children. Overall, SPT reactivity to mite (12%) was most common. Wheeze and asthma were reported by 7.9% and 8.3%, respectively. In multivariate analyses, factors associated with mite SPT were BMI (aOR 2.43, 95% CI 1.28-4.60, P = 0.007), schistosome infection (aOR 0.15, 95% CI 0.05-0.41) and mite sIgE (aOR 7.40, 95% CI 5.62-9.73, P < 0.001) but not area. However, the association between mite IgE and SPT differed by area and was strongest among urban-high SES children (aOR = 15.58, 95% CI 7.05-34.43, P < 0.001). Compared to rural, urban-low SES area was negatively associated with current wheeze (aOR 0.41, 95% CI 0.20-0.83, P = 0.013). Both mite sIgE and mite SPT were significantly associated with current wheeze and asthma. Infection with schistosomes appeared to protect against mite SPT reactivity. This needs to be confirmed in future studies, preferably in a longitudinal design where schistosome infections are treated and allergic reactions reassessed.

Urban-rural differences in the gene expression profiles of Ghanaian children.

Recent studies indicate that urbanization is having a pronounced effect on disease patterns in developing countries. To understand the immunological basis of this, we examined mRNA expression in whole blood of genes involved in immune activation and regulation in 151 children aged 5-13 years attending rural, urban low socioeconomic status (SES) and urban high-SES schools in Ghana. Samples were also collected to detect helminth and malaria infections. Marked differences in gene expression were observed between the rural and urban areas as well as within the urban area. The expression of both interleukin (IL)-10 and programmed cell death protein 1 increased significantly across the schools from urban high SES to urban low SES to rural (P-trend <0.001). Although IL-10 gene expression was significantly elevated in the rural compared with the urban schools (P<0.001), this was not associated with parasitic infection. Significant differences in the expression of toll-like receptors (TLRs) and their signaling genes were seen between the two urban schools. Genetic differences could not fully account for the gene expression profiles in the different groups as shown by analysis of IL-10, TLR-2 and TLR-4 gene polymorphisms. Immune gene expression patterns are strongly influenced by environmental determinants and may underlie the effects of urbanization seen on health outcomes.

The foodscape: classification and field validation of secondary data sources across urban/rural and socio-economic classifications in England

BackgroundIn recent years, alongside the exponential increase in the prevalence of overweight and obesity, there has been a change in the food environment (foodscape). This research focuses on methods used to measure and classify the foodscape. This paper describes the foodscape across urban/rural and socio-economic divides. It examines the validity of a database of food outlets obtained from Local Authority sources (secondary level & desk based), across urban/rural and socio-economic divides by conducting fieldwork (ground-truthing). Additionally this paper tests the efficacy of using a desk based classification system to describe food outlets, compared with ground-truthing.MethodsSix geographically defined study areas were purposively selected within North East England consisting of two Lower Super Output Areas (LSOAs; a small administrative geography) each. Lists of food outlets were obtained from relevant Local Authorities (secondary level & desk based) and fieldwork (ground-truthing) was conducted. Food outlets were classified using an existing tool. Positive predictive values (PPVs) and sensitivity analysis was conducted to explore validation of secondary data sources. Agreement between 'desk' and 'field' based classifications of food outlets were assessed.ResultsThere were 438 food outlets within all study areas; the urban low socio-economic status (SES) area had the highest number of total outlets (n = 210) and the rural high SES area had the least (n = 19). Differences in the types of outlets across areas were observed. Comparing the Local Authority list to fieldwork across the geographical areas resulted in a range of PPV values obtained; with the highest in urban low SES areas (87%) and the lowest in Rural mixed SES (79%). While sensitivity ranged from 95% in the rural mixed SES area to 60% in the rural low SES area. There were no significant associations between field/desk percentage agreements across any of the divides.ConclusionDespite the relatively small number of areas, this work furthers our understanding of the validity of using secondary data sources to identify and classify the foodscape in a variety of geographical settings. While classification of the foodscape using secondary Local Authority food outlet data with information obtained from the internet, is not without its difficulties, desk based classification would be an acceptable alternative to fieldwork, although it should be used with caution.

Individual and neighborhood social factors of hypertension management in a low-socioeconomic status population: a community-based case–control study in Singapore

The aim of this study was to determine hypertension awareness, treatment and control, as well as to carry out regular blood pressure (BP) screening and monitoring, in a multi-ethnic urban low-socioeconomic status (SES) Asian community; and to compare these estimates with those of a higher-SES community in the same geographic location. We studied a neighborhood of three blocks of rented public flats (lower-SES community) and three adjacent blocks of owner-occupied public flats (higher-SES community) in Taman Jurong, Singapore. BP was measured, and demographic details and reasons for irregular BP screening, monitoring and treatment were collected from 2009 to 2010. Logistic regression was used to determine predictors of hypertension management. Participation was 90.0% (359/400) for the rental flat community and 70.2% (351/500) for the owner-occupied flats. Prevalence, awareness, treatment and control in the low-SES community (rental flats) were 63.9% (228/357), 61.8% (141/228), 69.5% (98/141) and 43.9% (43/98), respectively, whereas in the neighboring community these were 65.0% (228/351), 83.3% (190/228), 85.3% (162/190) and 66.0% (107/162), respectively. Adjusting for other sociodemographic variables, awareness, treatment and control were poorer in the low-SES community. In the low-SES community, awareness was higher among diabetics, dyslipidemics, those ≥60 years and those with regular access to doctors. Treatment was more likely among those ≥60 years, but less likely among those needing financial aid. Control was less likely in the employed. High cost of screening and treatment, if diagnosed, was the most frequently cited barrier among the low-SES group. Hypertension management in those of lower SES is poorer than in those of higher SES. For the lower-SES population, financial barriers need to be addressed.

Obesity and related risk factors among low socio-economic status minority students in Chicago

To assess overweight and related risk factors among urban low socio-economic status (SES) African-American adolescents in an attempt to study the underlying causes of ethnicity and gender disparities in overweight. Cross-sectional data collected on anthropometric measures, diet, physical activity and family characteristics from 498 students in grades 5-7 in four Chicago public schools were analysed to study the risk factors for overweight using stepwise regression analysis. Only 37.2% of the students lived with two parents. Nearly 90% had a television (TV) in their bedroom, and had cable TV and a video game system at home. Overall. 21.8% (17.7% boys versus 25.1% girls) were overweight (body mass index (BMI) >/= 95th percentile); and 39.8% had a BMI >/= 85th percentile. Compared with national recommendations, they had inadequate physical activity and less than desirable eating patterns. Only 66.1% reported having at least 20 min vigorous exercise or 30 min of light exercise in >/= 5 days over the past 7 days; 62.1% spent >3 h days- 1 watching TV/playing video games/computer, while 33.1% spent >/= 5 h days- 1. Their vegetable and fruit consumption was low, and they consumed too many fried foods and soft drinks: 55.1% consumed fried food twice or more daily and 19.5% four times or more daily; 70.3% consumed soft drinks twice or more daily and 22.0% four times or more daily on average. Gender, physical activity and pocket money were significant predictors of overweight (P < 0.05). Several factors in the students' behaviours, school and family environments may increase overweight risk among this population. There is a great need for health promotion programmes with a focus on healthy weight and lifestyle, and targeting urban low-SES minority communities.

Becoming an urban school middle-level science teacher

The purpose of this case study was to document the journey of three novice career change science inductees as they became middle-level science teachers in urban low socioeconomic status (SES) schools and included post-internship employment status data on all nine science teachers who completed the alternative certification program, up to the time of this writing. All teachers participated in a fast track master’s alternative certification degree program and received in-depth education coursework and mentoring. Reults indicated that support (i.e., administrative, parents, mentors) and teachers’ beliefs about their students’ capabilities may affect their effectiveness in urban, low SES middle-level science classrooms.

Obesity prevention in low socioeconomic status urban African-American adolescents: study design and preliminary findings of the HEALTH-KIDS Study

Obesity prevention among children and adolescents is a public health priority; however, limited school-based intervention trials targeting obesity have been conducted. This article provides an overview of the study design and baseline preliminary findings of our ongoing school-based intervention study. Randomized intervention trial to test a school-based, environmental obesity prevention program in urban low socioeconomic status (SES) African-American adolescents. The intervention program was developed based on several behavioral theories and was guided by preliminary findings based on focus group discussion and baseline data. Four Chicago public schools in the US. Over 450 5-7th graders and their families and schools were involved. Our baseline data indicate a high prevalence of overweight (43% in boys and 41% in girls) and a number of problems in these children's physical activity and eating patterns. Only 26% reported spending > or = 20 min engaged in vigorous-moderate exercise in > or = 5 days over the past 7 days; 29% reported spending > or = 5 h each day watching TV, playing video games, or using computer. They also consumed too many fried foods and soft drinks. On average, 55% consumed fried foods > or = 2 times/day over the past 7 days; regarding soft drinks, 70% reported consuming > or = 2 times/day. School-based obesity prevention programs are urgently needed in the target US urban, low SES, minority communities. These data can be used to inform intervention activities.

Pausological aspects of Guatemalan children’s narratives

Three groups of 22 second-grade Guatemalan children were tape-recorded as they spontaneously narrated the story of a day in the life of a family they had selected from 15 clay dolls. The three groups represented two socioeconomic status (SES) levels in Guatemala City and a rural Guatemalan group. Urban-high and urban-low SES groups showed the greatest differences: the urban-high group used shorter silent pauses and a slower articulation rate than the other two groups, while the urban-low group used significantly longer silent pauses and a faster articulation rate. The rural group fell between the two urban groups on these measures. The SES level is clearly discriminated by silent pause length and articulation rate.