Household, dietary, and clinical characteristics of childhood caries and overweight progression-A prospective cohort study.

BACKGROUND: Childhood caries and obesity are complex chronic diseases with negative health outcomes. AIM: This study sought a risk profile for childhood caries and overweight. DESIGN: Children were recruited into a longitudinal prospective cohort study. Caries and overweight characteristics were obtained at baseline, 6, 12, and 18 months. Sequential data modeling steps determined a disease risk profile. RESULTS: At baseline, 50% of the children (n = 194, 3.0 to 6.9 years) had caries; 24% were overweight, of whom 50% had caries. Correlation analysis separated child characteristics from household circumstances. Principal component modeling separated child snacking from meal-eating patterns, and household smoking from parent education variables. Baseline caries and overweight were not associated, but they grouped together in the modeling of composite features. Forty-five percent of children showed caries progression, 29% overweight progression, and 10% progression of both diseases. The strongest predictors of progression were disease presence, household-based characteristics, and sugary drinks. Children with caries and overweight progression shared multiple child- and household-based features. CONCLUSION: Individually, caries and overweight were not associated. Children with progression of both conditions shared a profile and multiple risk characteristics suggesting these findings could be useful in assessing the risk for the most extreme cases of caries and overweight.

Typologies of dependency, household characteristics, and disparity in formal and informal care use: analysis of community-dwelling long-term care insurance claimants in an urban municipality of China.

BACKGROUND: A comprehensive understanding of subgroups of community-dwelling older adults and their long-term care (LTC) utilization can help to promote equality in the long-term services and support system. Dependency and household characteristics were found to affect the LTC utilization of homebound older adults. However, few studies considered the typologies of dependency of older populations according to co-occurring limitations, and little is known about differences in LTC use among elderly of typologies of dependency under distinct household conditions. METHODS: We aimed to identify typologies of dependency of older adults living at home and explore the disparities in formal care and informal care use among typologies of dependency by income and living situation. In this cross-sectional study, we used the public long-term care insurance (LTCI) database of Yiwu, Zhejiang Province, China, and included 1675 individuals aged ≥ 60 years living at home. Cluster analysis was conducted to determine typologies of dependency among older adults. A two-step multilevel analysis was used to examine disparities in formal and informal care use related to household income and living status among typologies of dependency. RESULTS: Seven dependency clusters were identified. Pro-wealthy inequalities in both formal and informal care use were found in the least dependent cluster and the limited-locomotion cluster. Pro-poor inequalities in formal care use were found in the fully dependent cluster without impaired vision and the cluster with intact continence and vision. Living with family members was positively associated with receiving formal care for the fully dependent cluster. Older adults in most clusters were more likely to use informal care when living with family members, except for the least dependent cluster and the limited-locomotion cluster. CONCLUSIONS: Our findings suggest that household inequalities in LTC use varied among typologies of dependency of older adults, which may provide insights for researchers and policymakers to develop tailored LTC and targeted LTCI programs for older adults living at home and their family caregivers, considering both typologies of dependency and household characteristics.

Intrafamilial Characteristics Are Important Predictors of Children's Diets in New Mexico's Border Colonias.

INTRODUCTION: We assessed selected nutritional indicators in Mexican-origin children in two low-income, rural colonias in New Mexico on the U.S.-Mexico border. These children are at higher risk for obesity and other chronic diseases linked to poor nutrition in childhood, but little is known about their diets. METHOD: We surveyed mothers of 202 children 6 to 10 years old about sociodemographic characteristics, family and child attitudes and behaviors, and the child's diet. We compared diet with dietary recommendations and used regression trees to identify significant predictors of recommended intake. RESULTS: Among families, 89.1% participated in Medicaid, and 52.5% participated in a Supplemental Nutrition Program. More children met recommendations for fruit (36.1%) than vegetables (1.5%). Greater vegetable intake was associated with a child's not thinking healthy food tasted bad, greater family activity, and younger maternal age. Only 5.0% of children met the recommendation for <10% of energy from added sugar, with the average child consuming 2.4 times that from sugar-sweetened beverages and snacks. Lower sugar intake was associated with less screen time, not having TV on during meals, and playing team sports. Family access to healthy food and child use of mobile food vendors, vending and convenience stores were not predictive of diet. CONCLUSION: Hispanic children in border colonias have poor diets that put them at risk for obesity and numerous chronic diseases. Addressing this problem will require changing family norms and attitudes toward healthy food, screen time behavior, and physical activity levels within families.

Hierarchical modelling of factors associated with anaemia among under-five children in Nigeria.

This study used a nationally representative cross-sectional data from 2018 Nigeria Demographic Health Survey (NDHS) to investigate the prevalence and factors associated with anaemia in children aged less than five years in Nigeria. Anaemia was defined as haemoglobin level <11.0g/dl, while explanatory variables included parental profile, social and environmental factors. Descriptive analyses and multivariable Poisson regression models were fitted using Stata 15 software. Associated factors were quantified using Prevalence Ratio (PR) with 95% confidence interval (CI). Of the 5834 children aged 6-59 months, 51.9% were male. The prevalence of anaemia among under-five children was 71.6% (95% CI: 69.9-73.2). Childhood anaemia was associated with history of maternal anaemia (PR 1.06; CI 1.05-1.08); having underweight mothers (PR 1.02; CI 1.00-1.05); being a Muslim (PR 1.05; CI 1.02-1.08), Igbo (PR 1.07; CI 1.01-1.14) and Hausa (PR 1.04; CI 1.01-1.07) ethnic group. Further, children from South-South (PR 1.09; CI 1.06-1.13) and South-West (PR 1.06; CI 1.02-1.10) and those currently breastfeeding (PR 1.06; CI 1.04-1.07) had higher risk of anaemia. However, children from middle (PR 0.94; CI 0.91-0.97), or higher wealth indices were less likely to have anaemia. Maternal socio-economic and nutritional characteristics were identified as key predictors of under-five anaemia. Strategies are needed to mitigate the effect of poverty and tweak new and existing nutritional intervention programs to make them responsive to socio-cultural peculiarities across the various geo-political regions of Nigeria.

Family, school and individual characteristics associated with adolescents' physical activity at school in Hong Kong: the iHealt(H) study.

BACKGROUND: Adolescents (11-18-year-olds) are at risk of physical inactivity. There is limited knowledge of physical activity (PA) levels among adolescents in the school setting in Hong Kong. We developed and tested a novel theoretical model of how household/family characteristics, school-level social and physical environmental factors and individual adolescent's characteristics impact on their school-based PA during and after school hours. METHODS: Cross-sectional study participants were Hong Kong adolescents attending secondary school, paired with their parent/caregiver (n = 1299 dyads). Parents survey-reported on household/family characteristics, parental PA and rules related to PA. Adolescents survey-reported on school PA-friendly policy, PA equipment at school (combined to create PA-friendly index), social support for PA from peers, athletic ability, attitude to and enjoyment of PA. Adolescents self-reported their school-based PA during school hours (physical education; recess) and after school (sports teams/classes). Objectively-measured moderate-to-vigorous PA (MVPA) was measured using accelerometers for a sub-sample of adolescents (n = 588). Generalized additive mixed models were used to estimate how household/family-level and school-level factors, and adolescents' individual characteristics were related to adolescents' school-based PA in Hong Kong, and to identify potential mediators of these associations. RESULTS: A complex network of potential pathways of influence on adolescents' school-based PA was identified. Overall, most of the significant effects were indirect ones. However, there were far fewer significant pathways between household/family characteristics and objectively-measured MVPA at school than there were for self-reported PA at school. In fact, there were no indirect pathways between these variables and MVPA at school. Gender disparities among pathways were identified. For example, school PA-friendly index was significantly associated with MVPA after school only among girls (eb = 1.06, 95%CI (1.02,1.12)). CONCLUSIONS: Key points of intervention identified by our study may be in the re-design of PE classes so that adolescents spend more time being physically active during these classes, and promotion of active play during recess. Further research measuring amount, intensity and location of adolescents' PA using accelerometer and Global Positioning Systems is required in Hong Kong, as well as observational studies of PA during PE classes and in the schoolyard during recess, to guide the design of PA interventions.

Indoor air quality of 5,000 households and its determinants. Part A: Particulate matter (PM2.5 and PM10-2.5) concentrations in the Japan Environment and Children's Study.

Exposure to particulate matter (PM) is one of the important risk factors for morbidity and mortality. Although PM concentrations have been assessed using air quality monitoring stations or modelling, few studies have measured indoor PM in large-scale birth cohorts. The Japan Environment and Children's Study (JECS) measured indoor and outdoor air quality in approximately 5000 households when the participating children were aged 1.5 and 3 years. PM was collected using portable pumps for 7 days (total of 24 h), inside and outside each home. Prediction models for indoor PM concentrations were built using data collected at age 1.5 years and post-validated against data collected at age 3 years. Median indoor/outdoor PM2.5 and PM10-2.5 concentrations at age 1.5 years [3 years] were 12.9/12.7 [12.5/11.3] µg/m3 and 5.0/6.3 [5.1/6.1] µg/m3, respectively. Random forest regression analysis found that the major predictors of indoor PM2.5 were indoor PM10-2.5, outdoor PM2.5, indoor smoking, observable smoke and indoor/outdoor temperature. Indoor PM2.5, outdoor PM10-2.5, indoor humidity and opening room windows were important predictors of indoor PM10-2.5 concentrations. Indoor benzene, acetaldehyde, ozone and nitrogen dioxide concentrations were also found to predict indoor PM2.5 and PM10-2.5 concentrations, possibly due to the formation of secondary organic aerosols. These findings demonstrate the importance of reducing outdoor PM concentrations, avoiding indoor smoking, using air cleaner in applicable and diminishing sources of VOCs that could form secondary organic aerosols, and the resulting models can be used to predict indoor PM concentrations for the rest of the JECS cohort.

Indoor air quality of low and middle income urban households in Durban, South Africa.

INTRODUCTION: Elevated levels of indoor air pollutants may cause cardiopulmonary disease such as lower respiratory infection, chronic obstructive lung disease and lung cancer, but the association with tuberculosis (TB) is unclear. So far the risk estimates of TB infection or/and disease due to indoor air pollution (IAP) exposure are based on self-reported exposures rather than direct measurements of IAP, and these exposures have not been validated. OBJECTIVE: The aim of this paper was to characterize and develop predictive models for concentrations of three air pollutants (PM10, NO2 and SO2) in homes of children participating in a childhood TB study. METHODS: Children younger than 15 years living within the eThekwini Municipality in South Africa were recruited for a childhood TB case control study. The homes of these children (n=246) were assessed using a walkthrough checklist, and in 114 of them monitoring of three indoor pollutants was also performed (sampling period: 24h for PM10, and 2-3 weeks for NO2 and SO2). Linear regression models were used to predict PM10 and NO2 concentrations from household characteristics, and these models were validated using leave out one cross validation (LOOCV). SO2 concentrations were not modeled as concentrations were very low. RESULTS: Mean indoor concentrations of PM10 (n=105), NO2 (n=82) and SO2 (n=82) were 64µg/m3 (range 6.6-241); 19µg/m3 (range 4.5-55) and 0.6µg/m3 (range 0.005-3.4) respectively with the distributions for all three pollutants being skewed to the right. Spearman correlations showed weak positive correlations between the three pollutants. The largest contributors to the PM10 predictive model were type of housing structure (formal or informal), number of smokers in the household, and type of primary fuel used in the household. The NO2 predictive model was influenced mostly by the primary fuel type and by distance from the major roadway. The coefficients of determination (R2) for the models were 0.41 for PM10 and 0.31 for NO2. Spearman correlations were significant between measured vs. predicted PM10 and NO2 with coefficients of 0.66 and 0.55 respectively. CONCLUSION: Indoor PM10 levels were relatively high in these households. Both PM10 and NO2 can be modeled with a reasonable validity and these predictive models can decrease the necessary number of direct measurements that are expensive and time consuming.

Airborne endotoxin concentrations in indoor and outdoor particulate matter and their predictors in an urban city.

Endotoxins are an important biological component of particulate matter and have been associated with adverse effects on human health. There have been some recent studies on airborne endotoxin concentrations. We collected fine (PM2.5 ) and coarse (PM10-2.5 ) particulate matter twice on weekdays and weekends each for 48 hour, inside and outside 55 homes in an urban city in Japan. Endotoxin concentrations in both fractions were measured using the kinetic Limulus Amebocyte Lysate assay. The relationships between endotoxin concentrations and household characteristics were evaluated for each fraction. Both indoor and outdoor endotoxin concentrations were higher in PM2.5 than in PM10-2.5 . In both PM2.5 and PM10-2.5 , indoor endotoxin concentrations were higher than outdoor concentrations, and the indoor endotoxin concentrations significantly correlated with outdoor concentrations in each fraction (R2 =0.458 and 0.198, respectively). Indoor endotoxin concentrations in PM2.5 were significantly higher in homes with tatami or carpet flooring and in homes with pets, and lower in homes that used air purifiers. Indoor endotoxin concentrations in PM10-2.5 were significantly higher in homes with two or more children and homes with tatami or carpet flooring. These results showed that the indoor endotoxin concentrations were associated with the household characteristics in addition to outdoor endotoxin concentrations.

Independent and combined effects of maternal smoking and solid fuel on infant and child mortality in sub-Saharan Africa.

OBJECTIVE: To estimate the independent and combined risks of infant and child mortality associated with maternal smoking and use of solid fuel in sub-Saharan Africa. METHODS: Pooled weighted data on 143 602 under-five children in the most recent demographic and health surveys for 15 sub-Saharan African countries were analysed. The synthetic cohort life table technique and Cox proportional hazard models were employed to investigate the effect of maternal smoking and solid cooking fuel on infant (age 0-11 months) and child (age 12-59 months) mortality. Socio-economic and other confounding variables were included as controls. RESULTS: The distribution of the main explanatory variable in households was as follows: smoking + solid fuel - 4.6%; smoking + non-solid fuel - 0.22%; no smoking + solid fuel - 86.9%; and no smoking + non-solid fuel - 8.2%. The highest infant mortality rate was recorded among children exposed to maternal smoking + solid fuel (72 per 1000 live births); the child mortality rate was estimated to be 54 per 1000 for this group. In full multivariate models, the risk of infant death was 71% higher among those exposed to maternal smoking + solid fuel (HR = 1.71, CI: 1.29-2.28). For ages 12 to 59 months, the risk of death was 99% higher (HR = 1.99, CI: 1.28-3.08). CONCLUSIONS: Combined exposures to cigarette smoke and solid fuel increase the risks of infant and child mortality. Mothers of under-five children need to be educated about the danger of smoking while innovative approaches are needed to reduce the mortality risks associated with solid cooking fuel.

Closing the health gap in a generation: exploring the association between household characteristics and schooling status among orphans and vulnerable children in Swaziland.

Swaziland has one of the highest HIV/AIDS prevalences in the world, which has contributed to many Swazi children being left as "orphans and vulnerable children" (OVC). In 2010, there were 78,000 AIDS orphans in the country and the number is expected to increase given the current HIV prevalence. The WHO aims to close the gap in a generation and eliminate health inequality; as a result the Swazi Government began in 2005 to provide financial support to the education of OVC. Prior research has indicated that household characteristics are some of the major determinants with respect to schooling status among children. We have examined the association between household characteristics and schooling status of OVC. Schooling status may vary by gender and by age, as well as by other sociodemographic factors, in sub-Saharan African societies, and therefore we have also included a comprehensive set of appropriate variables in all of our multivariate analyses. Using existing data from the Swaziland Multiple Indicator Cluster Survey 2010, a total of 5890 children aged 7-18 years old were analyzed. The results from the multivariate logistic regressions showed that non-OVC were more likely than OVC to be in school (OR = 2.18, p < 0.001), even after taking other variables into considerations. The OVC in socioeconomically disadvantaged households, such as those with lower levels of household wealt, and those who resided in an urban area, were less likely to be in school. These findings suggest that education programs for OVC need to be household-appropriate.

Analysis of incidence, intensity, and gender perspective of multidimensional urban poverty in Kenya.

Poverty continues to be one of the biggest challenges facing many economies worldwide, and its incidences and intensities are very high in developing economies. This paper utilized the Alkire-Foster (AF) method to compute the multidimensional poverty index (MPI) and analyze the incidence and intensity of multidimensional poverty among urban households in Kenya. The findings indicated that 8.7 % of urban households are multidimensionally deprived in 33.3 % of the selected dimensional indicators. Also, the results showed that over 50 % of urban households are deprived of drinking water and sanitation services. In addition, the findings revealed that higher poverty incidence, intensity, and urban multidimensional poverty exist among female-headed households, old household headships, and households residing in peri-urban regions. The Probit regression analysis indicated that large household size, number of children under five years, household head age, gender, marital status, urban food insecurity, health status, and residing in Malaria endemic zone are significant positive predictors of urban multidimensional poverty. On the other hand, an increase in the number of educated women, owners of insurance coverage, agricultural land, and wealthy and home-owning households is linked to a decline in urban multidimensional poverty. The paper professes that policymakers should cautiously consider household socioeconomic differences while designing poverty alleviation policies.

Who engages in electricity conservation and to what effect after real-world, high-resolution feedback? An empirical analysis of Korean households with smart meters.

Engagement with households to fully realize the potential of demand-side solutions has attracted policy attention. The potential of feedback has been understudied, especially regarding who engages more in electricity conservation. Furthermore, most studies have been limited to the Western context, with only a few that explore Asia. This study fills these gaps by investigating changes in household hourly electricity consumption patterns after its members receive high-resolution feedback. After data balancing, we partitioned 63 households into distinct groups using K-means clustering and investigated consumption changes after the provision of high-resolution electricity feedback through a mobile application. The results indicate mixed effectiveness of feedback: some households reduced consumption by about 13 %, while others increased it between 7 % and 20 %. In addition, statistical analysis using survey responses revealed that households with greater awareness of electricity costs and a stronger interest in climate change were more receptive to feedback. Demographic and housing attributes such as age, building type, and floor count also influenced the feedback effect. The findings recommend enhancing awareness of electricity costs and climate change and developing a better understanding of individuals' challenges with changing conservation behaviors based on their demographic and housing characteristics.

Statistical Analysis of Factors Associated with Diarrhea in Yemeni Children under Five: Insights from the 2022-2023 Multiple Indicator Cluster Survey.

Diarrheal disease remains a significant cause of preventable morbidity and mortality in the pediatric population, particularly among children below five years of age. Although the occurrence of diarrheal episodes is on the decline, its impact continues to escalate at a concerning rate among children under the age of five, especially in developing countries. The objective of this paper is to investigate the factors associated with diarrhea in Yemeni children younger than five years, drawing on data from the latest edition of the Multiple Indicator Cluster Survey (MICS) Yemen conducted in 2022-2023. To identify factors associated with the prevalence of childhood diarrhea, bivariate analysis and multivariable logistic regression were utilized. The findings of this study suggest that age group 6-23, unimproved sanitation, and low-income households are associated with high risk of diarrhea in children under five years of age in Yemen. The study contributes additional evidence regarding factors that should be prioritized in public health strategies geared towards reducing diarrheal prevalence among Yemeni children.

Exploring the impact of household, personal, and employment characteristics on dentistry's income gap between men and women.

BACKGROUND: This study provides an update on the income gap between men and women in dentistry, evaluating the impact of dentists' household, personal, and employment characteristics on income differences. METHODS: This cross-sectional study used data from the US Census Bureau's 5-year American Community Survey (2014-2018). Data were analyzed using descriptive statistics and regression analysis (ordinary least squares regressions, Oaxaca-Blinder regression decomposition on logged personal income). RESULTS: Female dentists were less likely to be White and born in the United States and more likely to be bilingual than male dentists. Adjusted estimates indicated that male dentists earned 22% more than female dentists (risk ratio, 1.22; 95% CI, 1.15 to 1.29). Black dentists earned 24% less (risk ratio, 0.76; 95% CI, 0.68 to 0.85) and other race non-Hispanic dentists earned 17% less (risk ratio, 0.83; 95% CI, 0.70 to 0.97) than non-Hispanic White dentists, after adjustment for covariates. Dentists with a nondentist partner or spouse earned more than those without a partner or spouse, and dentists with 3 or more children earned 19% more than those who were childless (P < .001; 95% CI, 1.09 to 1.31). The income gap between sexes was $51,784 (in 2018 dollars); 27.2% of this gap was explained by observable personal (that is, race and ethnicity, bilingualism), employment (for example, hours worked and employee or ownership status), and household (for example, partner or spouse occupation and education) characteristics. CONCLUSIONS: The dental workforce is diversifying, but sex and racial disparities in income persist. The income gap between sexes, although reduced over time, is now less explainable than in the past. PRACTICAL IMPLICATIONS: The diversification of the dental workforce is a promising sign for an increasingly diverse population's present and future oral health, but it is important that existing income gaps between men and women are addressed.

Environmental and Behavioral Factors in Association with Lung Function Impairment in Children Living in Wuhan, China.

Children's lung function is a significant predictor of health status throughout their lifetime. This study aims to identify the prevalence of impaired lung function in children and the potential influencing factors in elementary school children of Wuhan, China. Children of 6−12 years old were enrolled from elementary schools in Wuhan, China, in 2018, on the basis of a cross-sectional study design. Information on personal behavior patterns and household characteristics, as well as parental factors, was collected based on a questionnaire survey. Spirometry was used to measure fifteen lung function indicators. Logistic regression models were used to estimate odds ratios of prevalence of impaired lung function with regard to socioeconomic, personal behavior patterns, household, and parental factors, respectively. Four lung function indicators such as FET and EVC in urban children had higher values than in the suburban children after adjusting for confounders (p < 0.05). A higher prevalence of impaired lung function (FEV6, FEV3, EVC, and VC) was found in the children from the rural area than in those from the urban area. A sex difference in FET impairment was observed, however, no significant difference in impairment in other lung function indicators were found between girls and boys. The elevated height and weight of the children was significantly associated with an increased and decreased prevalence of impaired lung function, respectively, particularly both for FEV6, FEV3, FIVC, and FIV1. Opening windows for a longer time in summer was significantly associated with a lower prevalence of impaired FEF25 and MVV, and an extended time of opening windows in winter was significantly associated with a lower prevalence of impaired FEV6. While, opening windows for a longer time in autumn was significantly associated with higher prevalence of impaired FEV6 and FEV1/VC. Home renovations, doing physical exercise for more than 30 min per day, air pollution exposure during commuting, sleeping in own rooms, height stunting, and preterm birth were significantly associated with an increased risk of impaired lung function. Breastfeeding, having a father with a white-collar profession and with a higher education level were positively associated with the lower prevalence of impaired lung function. Impaired lung function is commonly found in school children in Wuhan, nowadays. Breastfeeding, opening windows long-term in summer and winter, higher socioeconomics, and an urban living environment were protective factors for impaired lung function. However, opening windows long-term and using air conditioning short-term in autumn, as well as home renovations, doing physical exercise for more than 30 min per day, preterm birth, height stunting, and air pollution exposure during commuting were regarded as significant risk factors for impaired lung function. Promoting breastfeeding, lengthening window opening times in winter and summer, and controlling household renovation and air pollution exposure during commuting are recommended to reduce the risk of impaired lung function in children in Wuhan.

Changes in children's lung function over two decades in relation to socioeconomic, parental and household factors in Wuhan, China.

BACKGROUND: It is important to identify risk and beneficial factors for children's lung function. This study aims to ascertain potential changes in children's lung function in relation to changes in socioeconomic, parental and household factors, based on a comparison between two periods spanning 25 years in Wuhan, the largest metropolis in central China. METHODS: In two cross-sectional studies, lung function measurements and questionnaire surveys were conducted on school-age children in 1993-1996 (Period I) and in 2018 (Period II). Children of 6-12 years old from elementary schools were selected by a multistage sampling method. Demographic information, socioeconomic status, feeding methods, parental illness and behavior patterns, as well as household characteristics, were collected through a questionnaire survey. Spirometric lung function was measured, including forced vital capacity (FVC), forced expiratory volume in the first second (FEV1), forced expiratory flow at 25% and 75% of the pulmonary volume (FEF25-75), and peak expiratory flow (PEF). Wilcoxon analysis of variances was used to assess the differences in lung function indexes between Period I and Period II. Multiple linear regression models were used to estimate the association of lung function with regard to socioeconomic, parental and household factors, respectively. RESULTS: Significant prevalence reductions were observed for household coal use, paternal smoking and maternal asthma, while the prevalence increased significantly for children sleeping in their own rooms or own beds and breastfeeding, ventilation use during cooking, and parental education level from Period I to Period II. When adjusted for age, height, weight, sex and other factors assessed in the study, children had significant lower values of FVC, FEV1, and PEF in Period II than in Period I. Enclosed kitchen was significantly associated with lower lung function in children in Period I. Urban living condition and higher maternal education level were each associated with a higher FVC, while father having no fixed income was associated with a lower FVC and a lower FEV1, respectively, in Period II. In comparison with Period I, the beneficial impact of urban living and that of breastfeeding were enhanced and the detrimental effect of poor household condition was weakened in Period II. CONCLUSIONS: Lung function was lower in 2018 than in 1993-1996 in school-age children living in Wuhan. Although improvements in urban living and household environmental conditions as well as increased breastfeeding in Period II could have contributed to increased lung function, other unmeasured risk factors may have played a more dominant role in leading to a net decrease in lung function from Period I to Period II. Future studies are needed to identify these risk factors.

Beyond Smoking: Environmental Determinants of Asthma Prevalence in Western Nepal.

BACKGROUND: Asthma is widely prevalent in Nepal, but the causes are not well known aside from some general associations with ambient air pollution and microbial exposures. Information on the wide-ranging determinants of asthma prevalence among the population at risk can help policy makers to reduce risk. OBJECTIVE: The present study is a preliminary investigation of the environmental, socioeconomic and behavioral determinants of asthma prevalence in western Nepal. METHODS: A survey was conducted among 420 randomly selected households in western Nepal. A cross-sectional analytical study design was employed with the primary data using econometric tools of probit and logistic regression. RESULTS: Environmental variables such as extreme cold winter, deteriorating river water quality and air pollution were associated with an increase in asthma prevalence. However, individual or household characteristics such as advancing age of household head, use of pesticides in the home for the control of pests, piped drinking water with old pipes and lack of participation in awareness programs were associated with an increase in asthma prevalence. DISCUSSION: Among environmental factors, decreasing river water quality, increasing air pollution, and extremely cold winters are more likely to contribute to asthma prevalence. In light of the effects of environmental factors on the prevalence of asthma in Nepal, the high public and private costs of asthma could further impoverish the rural poor. CONCLUSIONS: Environmental health policy makers should design adaptation strategies along with additional community programs addressing asthma-instigating factors. Programs to reduce environmental pollution can reduce morbidity due to asthma. PARTICIPANT CONSENT: Obtained. ETHICS APPROVAL: This study was approved by the Ethical Committee of the Nepal Health Research Council. COMPETING INTERESTS: The authors declare no competing financial interests.

Changes in children's asthma prevalence over two decades in Lanzhou: effects of socioeconomic, parental and household factors.

BACKGROUND: The prevalence of childhood asthma may have changed with rapid economic development. This study aims to ascertain potential changes in asthma prevalence in relation to changes in socioeconomic, parental and household factors, based on a comparison between two periods spanning over 20 years in Lanzhou, a large northwestern city of China. METHODS: Cross-sectional studies using the same protocols were performed in Lanzhou, China in 1994-1995 (Period I) and in 2017 (Period II). Children of 6-12 years old from elementary schools were selected by a multistage sampling method. Information on the presence of asthma and asthma-related symptoms of children, socioeconomic status, feeding methods, parental illness and behavior patterns, as well as household characteristics, were collected through a questionnaire survey. Logistic regression models were used to estimate odds ratios of asthma prevalence with regard to socioeconomic, parental and household factors, respectively. RESULTS: Significant prevalence reductions were observed for paternal smoking, household coal use, and parental asthma, while the prevalence increased significantly for children sleeping in their own rooms or own beds, ventilation use during cooking, and parental occupation and education level after 22 years. In children, the prevalence of ever-diagnosed asthma decreased from 3.2% in period I to 1.5% in Period II (P<0.001); the prevalence of wheeze also decreased from 15.4% to 9.3% (P<0.001). Passive smoking (OR =1.531, 95% CI: 1.032-2.270) and poor household ventilation (OR =1.709, 95% CI: 1.208-2.416) were significantly associated with an increased prevalence of wheeze in Period I, whereas household mold (OR =2.112, 95% CI: 1.203-3.811) was significantly associated with prevalence of wheeze. Parental asthma history was associated with increased prevalence of asthma and asthma-related symptoms. Breastfeeding was significantly associated with reduced risk of asthma in period II children. CONCLUSIONS: The prevalence of asthma and that of asthma-related symptoms were lower in 2017 than in 1994-1995 in school children living in Lanzhou. In 2017 with increased urbanization and industrialization, breastfeeding became a significant protective factor and household mold was a significant risk factor for asthma diagnosis and asthma-related symptoms. Promoting breastfeeding and household mold control is recommended to reduce the risk of childhood asthma in contemporary Lanzhou.

Prevalence of teenage pregnancy and the associated contextual correlates in Rwanda.

The rate of teenage pregnancy remains unacceptably high in most developing countries. In Rwanda, studies show a rapid increase over the past two decades despite the political achievements of women's empowerment, and efforts to curtail child sexual abuse. Unfortunately, the current knowledge of the household determinants of teenage pregnancies in Rwanda is limited, as recent studies have focused on providing numbers with little analysis of proximate causal factors or focused on the individual determinants. The study uses secondary data from the recent Rwanda Demographic and Health Survey (RDHS: 2014-2015) to analyse household factors associated with teenage pregnancies in Rwanda. In addition to descriptive analysis, we ran logistic regression models to determine the level of association between teenage pregnancy and household socioeconomic characteristics. Results indicate that marital status and age of household head, household size, number of bedrooms given the size of the household, and the educational level of the household-head are significantly associated with teenage pregnancy (p < 0.01). Teen girls from small households are more likely to get pregnant than those from large families, while financial, social and educational empowerment of parents, and harmonious household contexts contribute to lessening the cases of teenage pregnancy. It indicates that social and economic support to teen girls which include parental supervision, guidance, and financial care are essential aspects to consider in order to reduce teenage pregnancy rates. The study suggests that in addition to efforts directed to teens themselves, strategies for reducing teen pregnancies should focus on a range of household-level contexts that form two broad categories: empowering parents and maintaining parents' harmonious decisions on teen girls.

The influence of potentially traumatic household characteristics on blunt use among Black youth.

The residential status of mothers and fathers in the household has been shown to influence drug use and other health outcomes among adolescents. However, no studies have examined if these household characteristics influence blunt use (marijuana mixed with or replacing tobacco in cigar paper), specifically among Black adolescents. Using data from the 2012 National Survey on Drug Use and Health, this study was designed to examine the relationship between household characteristics (non-residential mother vs. residential mother and non-residential father vs. residential father) and blunt use among Black male and female adolescents. Findings revealed that Black males with non-residential fathers were more likely to have smoked blunts in their lifetime than Black males with residential fathers, illustrating the importance of fathers in the lives of Black males.