329 research outputs found
Body-mass index and all-cause mortality: individual-participant-data meta-analysis of 239 prospective studies in four continents
Background Overweight and obesity are increasing worldwide. To help assess their relevance to mortality in different populations we conducted individual-participant data meta-analyses of prospective studies of body-mass index (BMI), limiting confounding and reverse causality by restricting analyses to never-smokers and excluding pre-existing disease and the first 5 years of follow-up. Methods Of 10 625 411 participants in Asia, Australia and New Zealand, Europe, and North America from 239 prospective studies (median follow-up 13·7 years, IQR 11·4–14·7), 3 951 455 people in 189 studies were never-smokers without chronic diseases at recruitment who survived 5 years, of whom 385 879 died. The primary analyses are of these deaths, and study, age, and sex adjusted hazard ratios (HRs), relative to BMI 22·5–<25·0 kg/m2. Findings All-cause mortality was minimal at 20·0–25·0 kg/m2 (HR 1·00, 95% CI 0·98–1·02 for BMI 20·0–<22·5 kg/m2; 1·00, 0·99–1·01 for BMI 22·5–<25·0 kg/m2), and increased significantly both just below this range (1·13, 1·09–1·17 for BMI 18·5–<20·0 kg/m2; 1·51, 1·43–1·59 for BMI 15·0–<18·5) and throughout the overweight range (1·07, 1·07–1·08 for BMI 25·0–<27·5 kg/m2; 1·20, 1·18–1·22 for BMI 27·5–<30·0 kg/m2). The HR for obesity grade 1 (BMI 30·0–<35·0 kg/m2) was 1·45, 95% CI 1·41–1·48; the HR for obesity grade 2 (35·0–<40·0 kg/m2) was 1·94, 1·87–2·01; and the HR for obesity grade 3 (40·0–<60·0 kg/m2) was 2·76, 2·60–2·92. For BMI over 25·0 kg/m2, mortality increased approximately log-linearly with BMI; the HR per 5 kg/m2 units higher BMI was 1·39 (1·34–1·43) in Europe, 1·29 (1·26–1·32) in North America, 1·39 (1·34–1·44) in east Asia, and 1·31 (1·27–1·35) in Australia and New Zealand. This HR per 5 kg/m2 units higher BMI (for BMI over 25 kg/m2) was greater in younger than older people (1·52, 95% CI 1·47–1·56, for BMI measured at 35–49 years vs 1·21, 1·17–1·25, for BMI measured at 70–89 years; pheterogeneity<0·0001), greater in men than women (1·51, 1·46–1·56, vs 1·30, 1·26–1·33; pheterogeneity<0·0001), but similar in studies with self-reported and measured BMI. Interpretation The associations of both overweight and obesity with higher all-cause mortality were broadly consistent in four continents. This finding supports strategies to combat the entire spectrum of excess adiposity in many populations
Healthcare professionals’ perceptions of alcoholintoxicated trauma patients: Implications for healthcare delivery at South Rand Hospital Emergency Department
Objectives: The objectives of this study were to explore healthcare professionals’ (HCPs) perceptions about patients who had been assaulted, who consult under the influence of alcohol, and to make them aware of their attitudes towards these patients, with a view to improving their care.Design: An explorative, descriptive study with 15 HCPs purposively selected across professional categories, qualifications, work experience, gender and age. These HCPs participated in four focus group interviews on intoxicated patients who had been assaulted. The interviews were audio-taped and supplemented with field and observational notes. Themes were identified using the cut-and-paste method and grouped into categories. Findings were subjected to mental triangulation, peer review and member check, and were compared with those in the literature.Settings and subjects: HCPs who treat assault patients within the emergency department (ED) of South Rand Hospital, Rosettenville, comprised the study population. They expressed their perceptions and inner feeling about patients under the influence of alcohol who had been assaulted. Interviews were carried out in the boardroom of the hospital.Outcome measures: HCPs’ awareness of their attitudes towards assaulted patients under the influence of alcohol Results: Frustration, anger, a desire to punish intoxicated patients and concern about wastage of hospital resources were some of the stressors experienced by HCPs. Exposure to health hazards and a poor security system were concerns that arose following intimidation, aggression and verbal abuse from alcohol-intoxicated patients who had been assaulted.Conclusion: HCPs experience negative emotions and develop negative attitudes in response to alcohol-intoxicated patients who have been assaulted
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Gene-centric meta-analyses of 108,912 individuals confirm known body mass index loci and reveal three novel signals
Recent genetic association studies have made progress in uncovering components of the genetic architecture of body mass index (BMI). We used the ITMAT-Broad-CARe (IBC) array comprising up to 49,320 single nucleotide polymorphisms (SNPs) across ~2,100 metabolic and cardiovascular-related loci to genotype up to 108,912 individuals of European ancestry (EA), African Americans, Hispanics, and East Asians, from 46 studies, to provide additional insight into SNPs underpinning BMI. We used a five-phase study design: Phase I focused on meta-analysis of EA studies providing individual level genotype data; Phase II performed a replication of cohorts providing summary level EA data; Phase III meta-analyzed results from the first two phases; associated SNPs from Phase III were used for replication in Phase IV; finally in Phase V, a multi-ethnic meta-analysis of all samples from four ethnicities was performed. At an array-wide significance (P<2.40E-06), we identify novel BMI associations in loci TOMM40-APOE-APOC1 (rs2075650, P=2.95E-10), SREBF2 (a sterol regulatory element binding transcription factor gene, rs5996074, P=9.43E-07) and NTRK2 (a BDNF receptor, rs1211166, P=1.04E-06) in the Phase IV meta-analysis. Of ten loci with previous evidence for BMI association represented on IBC array, eight were replicated, with the remaining two showing nominal significance. Conditional analyses revealed two independent BMI associated signals in BDNF and MC4R regions. Of the 11 array-wide significant SNPs, three are associated with gene expression levels in both primary B-cells and monocytes; with rs4788099 in SH2B1 notably being associated with the expression of multiple genes in cis. These multi-ethnic meta-analyses expand our knowledge of BMI genetics
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https://larc.cardozo.yu.edu/event-invitations-2018/1013/thumbnail.jp
Men across a range of ethnicities have a higher prevalence of diabetes: findings from a cross-sectional study of 500000 UK Biobank participants
Aims:
Studies show that white men have a higher prevalence of Type 2 diabetes mellitus than women at a given age and BMI, but equivalent standardized data for other ethnic groups in the UK are sparse.
Methods:
This cross-sectional study analysed UK Biobank data from 489 079 participants to compare the prevalence of diabetes mellitus across four major ethnic groups including: 471 700 (96.4%) white, 7871 (1.6%) South Asian, 7974 (1.6%) black and 1534 (0.3%) Chinese participants, before and after standardizing for age, socio-economic status (SES), BMI and lifestyle factors including physical activity, TV viewing, fruit and vegetable intake, processed meat, red meat, oily fish, alcohol intake and smoking. A subgroup analysis of South Asians was also undertaken.
Results:
Crude diabetes prevalence was higher in men across all four ethnicities. After standardizing for age, SES, BMI and lifestyle factors, a significant sex difference in diabetes prevalence persisted in white (men 6.0% vs. women 3.6%), South Asian (21.0% vs. 13.8%) and black individuals (13.3% vs. 9.7%) (P < 0.0001); there was a non-significant difference between Chinese men and women (7.1% vs. 5.5%) (P = 0.211). Sex differences persisted across South Asian subgroups.
Conclusions:
Men across a range of major ethnic groups including white, South Asian and black, have a higher prevalence of diabetes compared with women of similar age, BMI, SES and lifestyle in the UK
The ‘state of exception’ and disaster education: a multilevel conceptual framework with implications for social justice
The term ‘state of exception’ has been used by Italian political theorist Giorgio Agamben to explain the ways in which emergencies, crises and disasters are used by governments to suspend legal processes. In this paper, we innovatively apply Agamben’s theory to the way in which countries prepare and educate the population for various types of emergencies. We focus on two main aspects of Agamben’s work: first, the paradoxical nature of the state of exception, as both a transient and a permanent part of governance. Second, it is a ‘liminal’ concept expressing the limits of law and where ‘law’ meets ‘not-law’. We consider the relationship between laws related to disasters and emergencies, and case studies of the ways in which three countries (England, Germany and Japan) educate their populations for crisis and disaster. In England, we consider how emergency powers have been orientated around the protection of the Critical National Infrastructure and how this has produced localised ‘states of exception’ and, relatedly, pedagogical anomalies. In Germany, we consider the way in which laws related to disaster and civil protection, and the nature of volunteering for civil protection, produce exceptional spaces for non-German bodies. In Japan, we consider the debate around the absence of emergency powers and relate this to Japanese non-exceptional disaster education for natural disasters. Applying Agamben’s work, we conclude by developing a new, multilevel empirical framework for analysing disaster education with implications for social justice
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