Environmental lead exposure and its relationship to traffic density among Senegalese children: a cross-sectional study

2006 ◽  
Vol 25 (11) ◽  
pp. 637-644 ◽  
Author(s):  
A Diouf ◽  
G Garçon ◽  
Y Diop ◽  
B Ndiaye ◽  
C Thiaw ◽  
...  

Leaded-gasoline is probably the primary source of lead (Pb) exposure in Dakar (Senegal). The present cross sectional study was undertaken to investigate the levels of Pb in Senegalese children and to present helpful data on the relationship between Pb levels and changes in biological markers of heme biosynthesis and oxidative stress. A total of 330 children, living since birth either in rural or urban areas (ie, Khombole (n=162) and Dakar (n=168), respectively) were included. During this cross sectional study, the mean blood (B)-Pb level in all children was 7.32±5.33 ųg/dL, and was influenced by the area of residence and gender. In rural children, 27 subjects (16.7%), 18 boys (19.6%) and nine girls (12.9%), had a B-Pb level >10 ųg Pb/dL, whereas 99 urban children (58.9%), respectively, 66 boys (71.8%) and 33 girls (43.4%), had alarmingly high B-Pb levels. Accordingly, urine delta-aminolevulinic acid levels were higher in children living in the urban area than in the rural areas (P B±0.001), and closely correlated with the B-Pb levels (P B±0.01). Moreover, glutathione peroxidase (GPx) activity, selenium (Se) level, glutathione reductase (GR) activity, and glutathione status were significantly influenced by area of residence and/or by gender. GPx activity and Se level were not only negatively correlated with B-Pb levels, but also positively correlated together (P B±0.01). Taken together, the present results allow us to conclude that urban children have higher B-Pb levels than rural children, and that of these children, boys have higher B-Pb levels than girls, leading thereby to alterations of heme biosynthesis and pro-oxidant/antioxidant balance. We also suggest that exposure to Pb and the Pb-induced adverse effects merits attention and that the development of preventive actions are of increasing importance in Senegal.

BMJ Open ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. e038666
Author(s):  
Fanjuan Kong ◽  
Aihua Wang ◽  
Jian He ◽  
Lili Xiong ◽  
Donghua Xie ◽  
...  

ObjectiveFew studies have addressed the unintentional suffocation of infants in China. This study is to assess the mortality rate of unintentional suffocation among infants and the differences across age groups, gender, rural versus urban locations and related healthcare services.DesignA cross-sectional study on unintentional suffocation death of infants under 1 year of age in Hunan Province from 2009 to 2018.SettingHunan Province, with a population of 74 million, has an area of 210 000 square kilometres and 123 counties/districts.ParticipantsThe total data of 4109 unintentional suffocation deaths of infants in Hunan Province from 2009 to 2018 was collected, including 2331 boys, 1766 girls, 12 infants of unknown gender, 2906 rural children and 1203 urban children.Main outcome measureThe unintentional suffocation mortality rate of infants is defined as the number of unintentional suffocation deaths of children under 1 year of age per 100 000 live births in the same year.ResultsThe infant mortality rate showed a downward trend from 2009 to 2018. Infant unintentional suffocation death decreased first and then fluctuated. The proportion of unintentional suffocation death to infant death showed an upward trend in fluctuation. Boys and rural children had higher mortality rates than those of girls and urban children. A total of 43.5% of the deaths occurred in winter. Forty-eight per cent of the unintentional suffocations were infants between 1 and 4 months of age. A total of 46.4% of the deaths occurred at home, and 71.6% were not treated; approximately 81.8% of the untreated cases were mainly due to a lack of time to get to the hospital. A total of 65.2% of the deaths were diagnosed postmortem.ConclusionThe mortality rate of unintentional suffocation among infants in Hunan Province should attract the attention of the population, and measures should be taken according to epidemiological investigations.


2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Metadel Alemayehu ◽  
Digsu N. Koye ◽  
Amare Tariku ◽  
Kedir Yimam

Background. Trachoma is the most common infectious cause of blindness worldwide. Once an epidemic in most parts of the world, it has largely now disappeared from developed countries. However, it continues to be endemic in many developing countries like Ethiopia. Even if several studies were conducted in different parts of Ethiopia, most of them did not show the independent predictors for rural and urban children separately. Therefore, this study aimed at assessing the prevalence and associated factors of active trachoma in urban and rural children.Methods. Community based comparative cross-sectional study was conducted in Dera woreda. Multistage sampling technique was used to select 671 children of one up to nine years of age. Data were collected by face to face interview and observation using a structured and pretested questionnaire. Binary Logistic Regression Model was fitted to consider adding independent predictors of outcome.Results. Out of 671 children, 20 (9.3%) of urban and 85 (18.6%) of rural children were positive for active trachoma. Having discharge on eye (AOR = 6.9, 95% CI: 1.79–27.89), presence of liquid waste around the main house (AOR = 5.6, 95% CI: 1.94–16.18), and living in households without latrine (AOR = 4.39, 95% CI: 1.39–13.89) were significantly associated with active trachoma of urban children. Rural children who had discharge on their eye (AOR = 5.86, 95% CI: 2.78–12.33), those who had unclean face (AOR = 4.68, 95% CI: 2.24–9.81), and those living in households with feces around their main houses (AOR = 1.94, 95% CI: 1.04–3.62) were significantly associated with active trachoma.Conclusion. The result showed that the prevalence of active trachoma in urban areas of the district was below WHO threshold of 10% to determine trachoma as public health problem. However, in rural areas of the district it is far from elimination of trachoma as a public health problem. Thus, in order to improve awareness of the community there is a need of health education programs regarding facial cleanliness, utilization of latrine, and proper solid waste and liquid waste disposal using multidisciplinary approach.


2020 ◽  
Vol 14 (1) ◽  
pp. 1-8
Author(s):  
Aneta Omelan ◽  
Iwona Zielińska ◽  
Bogdan Wziątek ◽  
Ernest Bielinis ◽  
Robert Podstawski

Author(s):  
Taru Manyanga ◽  
Joel D. Barnes ◽  
Jean-Philippe Chaput ◽  
Peter T. Katzmarzyk ◽  
Antonio Prista ◽  
...  

Abstract Background Insufficient physical activity, short sleep duration, and excessive recreational screen time are increasing globally. Currently, there are little to no data describing prevalences and correlates of movement behaviours among children in low-middle-income countries. The few available reports do not include both urban and rural respondents, despite the large proportion of rural populations in low-middle-income countries. We compared the prevalence of meeting 24-h movement guidelines and examined correlates of meeting the guidelines in a sample of urban and rural Mozambican schoolchildren. Methods This is cross-sectional study of 9–11 year-old children (n = 683) recruited from 10 urban and 7 rural schools in Mozambique. Moderate- to vigorous-intensity physical activity (MVPA) and sleep duration were measured by waist-worn Actigraph GT3X+ accelerometers. Accelerometers were worn 24 h/day for up to 8 days. Recreational screen time was self-reported. Potential correlates of meeting 24-h movement guidelines were directly measured or obtained from validated items of context-adapted questionnaires. Multilevel multivariable logit models were used to determine the correlates of movement behaviours. Meeting 24-h movement guidelines was defined as ≥60 min/day of MVPA, ≤2 h/day of recreational screen time, and between 9 and 11 h/night of sleep. Results More rural (17.7%) than urban (3.6%) children met all three 24-h movement guidelines. Mean MVPA was lower (82.9 ± 29.5 min/day) among urban than rural children (96.7 ± 31.8 min/day). Rural children had longer sleep duration (8.9 ± 0.7 h/night) and shorter recreational screen time (2.7 ± 1.9 h/day) than their urban counterparts (8.7 ± 0.9 h/night and 5.0 ± 2.3 h/day respectively). Parental education (OR: 0.37; CI: 0.16–0.87), school location (OR: 0.21; CI: 0.09–0.52), and outdoor time (OR: 0.67; CI: 0.53–0.85) were significant correlates of meeting all three 24-h movement guidelines. Conclusions Prevalence and correlates of meeting movement guidelines differed between urban and rural schoolchildren in Mozambique. On average, both groups had higher daily MVPA minutes, shorter sleep duration, and higher recreational screen time than the 24-h movement guidelines recommend. These findings (e.g., higher than recommended mean daily MVPA minutes) differ from those from high-income countries and highlight the need to sample from both urban and rural areas.


BMC Nutrition ◽  
2016 ◽  
Vol 2 (1) ◽  
Author(s):  
Laura Cornelsen ◽  
Pablo Alarcon ◽  
Barbara Häsler ◽  
Djesika D. Amendah ◽  
Elaine Ferguson ◽  
...  

BMJ Open ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. e041917
Author(s):  
Fei Shao ◽  
Haibin Li ◽  
Shengkui Ma ◽  
Dou Li ◽  
Chunsheng Li

ObjectiveThe purpose of this study was to assess the trends in outcomes of out-of-hospital cardiac arrest (OHCA) in Beijing over 5 years.DesignCross-sectional study.MethodsAdult patients with OHCA of all aetiologies who were treated by the Beijing emergency medical service (EMS) between January 2013 and December 2017 were analysed. Data were collected using the Utstein Style. Cases were followed up for 1 year. Descriptive statistics were used to characterise the sample and logistic regression was performed.ResultsOverall, 5016 patients with OHCA underwent attempted resuscitation by the EMS in urban areas of Beijing during the study period. Survival to hospital discharge was 1.2% in 2013 and 1.6% in 2017 (adjusted rate ratio=1.0, p for trend=0.60). Survival to admission and neurological outcome at discharge did not significantly improve from 2013 to 2017. Patient characteristics and the aetiology and location of cardiac arrest were consistent, but there was a decrease in the initial shockable rhythm (from 6.5% to 5.6%) over the 5 years. The rate of bystander cardiopulmonary resuscitation (CPR) increased steadily over the years (from 10.4% to 19.4%).ConclusionSurvival after OHCA in urban areas of Beijing did not improve significantly over 5 years, with long-term survival being unchanged, although the rate of bystander CPR increased steadily, which enhanced the outcomes of patients who underwent bystander CPR.


2008 ◽  
Vol 15 (04) ◽  
pp. 524-532
Author(s):  
MUHAMMAD ANWAR SULEHR ◽  
AYUB `ALI

Objectives: To assess the performance of Lady Health Workers (LHWs) in collection, storage & distribution of drugs andevaluate their effectiveness regarding TB suspect identification, referral, directly observing the intake of medicine, default identification andhealth education in TB-DOTS program. Design: A cross-sectional study. Setting: In district Toba Tek Singh. Period: From January to Sep2006. Materials & Methods: One hundred and Two LHWs were selected randomly and interviewed using a structured pre-tested questionnaire.Results: Among 102 LHWs, 76.5% were trained in TB-DOTS. Sixty four (62.7%) had qualification matric and above. Collection of the drugswas being performed properly by 87.3%, while 83.4% were storing the anti-TB drugs at proper places. Anti-TB drugs were being distributedto patients daily by 95.1%. Under the direct supervision of LHWs 69.6% of TB patients had completed treatment. In the areas of 58.8% LHWs,TB patients were declared cured after 8 months treatment. Defaulted TB cases were present, in the areas of 19.6% LHWs, while 12.8% of theLHWs had relapsed TB cases in their areas. Most of the LHWs (85.3%) had proper record of medicine and of the patients (84.3%). Conclusion:The experienced and TB-DOTS trained LHWs of urban areas, in the age group of 41-50 years had overall good performance. The LHWs havingqualification matric and above had better performance than the LHWs having middle qualification. TB-DOTS program in district Toba Tek Singhwas working successfully and it should be continued with some improvements and innovations.


2021 ◽  
pp. 1-11
Author(s):  
Rosa Elena Ponce-Alcala ◽  
Jose Luis Ramirez-Garcia Luna ◽  
Teresa Shamah-Levy ◽  
Hugo Melgar-Quiñonez

Abstract Objective: To examine the association between household food insecurity and overweight, obesity and abdominal obesity in Mexican adults. Design: Cross-sectional study. Setting: We analysed data from the Mexican Halfway National Health and Nutrition Survey 2016, a nationally representative survey that accounted for rural and urban areas in four regions of Mexico: North, Centre, Mexico City and South. Participants: Adults from 20 to 59 years old (n 5456, which represents 45 804 210 individuals at the national level). Results: 70·8 % of the Mexican adults had some degree of household food insecurity. This situation showed larger proportions (P < 0·05) among indigenous people, those living in a rural area, in the Southern region or the lowest socio-economic quintiles. The prevalence of obesity and abdominal obesity was higher in female adults (P < 0·001), with the highest proportions occurring among those experiencing severe household food insecurity. Among women, mean BMI and waist circumference were higher as household food insecurity levels increased (P < 0·001). According to multivariate logistic regression models, severe household food insecurity showed to be positively associated with obesity (OR: 2·36; P = 0·001) in Mexican adult females. Conclusions: Our findings confirm the association between household food insecurity and obesity among Mexican women. Given the socio-demographic characteristics of the food-insecure population, it is alarming that prevailing socio-economic inequalities in the country might also be contributing to the likelihood of obesity. Therefore, it is crucial to maintain and bolster surveillance systems to track both problems and implement adequate policies and interventions.


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