The Concurrent Validity of the ERGOS™ Work Simulator and the Ergo-Kit® with Respect to Maximum Lifting Capacity

The aim of this study was to investigate the concurrent validity—as regarding maximum lifting capacity—between the Functional Capacity Evaluation (FCE) methods, ERGOS Work Simulator and Ergo-Kit^®. Twenty-five healthy, male fire fighters participated. Dynamic lower and upper lifting capacities were determined using both FCE methods. Paired t tests showed the mean maximum lifting capacities to be significantly higher statistically when determined by the Ergo-Kit^® for lower, as well as, upper lifting. Spearman rank correlation coefficients varied between 0.49 and 0.66. It was concluded that the concurrent validity for lifting between both FCE methods was poor.     

The use of population attributable risk to estimate the impact of prevention and early detection of type 2 diabetes on population‐wide mortality risk in US males

The Population Attributable Risk (PAR) represents the proportion of the deaths (in a specified time) in the whole population that may be preventable if a cause of mortality were totally eliminated. This population‐based measure was used to assess the potential impact of three public health interventions for type 2 diabetes (early detection + standard therapy; early detection + intensive therapy; and primary prevention) on the mortality risk from all causes and from cardiovascular (CVD) diseases. Potential reduction in mortality risks for several levels of compliance or implementation (25%, 50%, 75%, 100%) for each intervention were also estimated. Results suggest that among males aged 45–74 years, the interventions may have greater population‐wide impact on total deaths among black males, and greater impact on the CVD deaths among white males. Overall, primary prevention (reduction in all‐cause mortality 6.2–10.0%, and CVD mortality 7.9–9.0%) may offer greater marginal benefit than screening and early treatment (reduction in all‐cause mortality 3.5–8.3%, and CVD mortality 2.8–8.6%). Often the question facing policy makers is not simply whether to but how much of an intervention is worth implementing? Estimated benefits for various intensities of intervention (as provided) may be useful to assess the likely marginal benefits of each intervention, and can be especially useful if combined with estimated marginal costs.     

The association between atopy and factors influencing folate metabolism: is low folate status causally related to the development of atopy?

BACKGROUND: Deficiency of folate has been associated with several disorders characterized by enhanced activation of the cellular immune system (non-allergic th1 type immune response). Whether folate status is also associated with atopic disease (allergic th2 type immune response) is unknown. We aimed at examining the association between atopy and markers of impaired folate metabolism, i.e. MTHFR(C677T) genotype, plasma total homocysteine, and dietary intakes of methionine, folates, and vitamins B12, B6, and B2. METHODS: Cross-sectional population-based study of 1,671 male and female residents of Copenhagen County, Denmark, aged 30-60 years participating in a health examination during 1999-2001. Atopy was defined as positive levels of specific IgE against a panel of inhalant allergens. MTHFR(C677T) genotype was determined by PCR followed by restriction fragment length polymorphism analyses. Total homocysteine was measured by fluorescent polarization immunoassay. Dietary vitamin intakes were estimated from a semi-quantitative food frequency questionnaire. RESULTS: The prevalence of atopy was associated with MTHFR(C677T) genotype. TT individuals had a significantly higher risk of atopy compared with CC/CT individuals [odds ratio 1.76, 95% confidence interval (95% CI) 1.19-2.60]. Additionally, gene-diet interaction effects were identified. Dietary markers were negatively associated with risk of atopy in persons with the TT genotype. Total homocysteine was not related to atopy (odds ratio per 5 mumol/l = 1.12, 95% CI 0.98-1.29). CONCLUSIONS: The results suggest that an impaired folate metabolism may be causally related to the development of atopy.     

Evolutionary rates and timescale comparison of Chikungunya viruses inferred from the whole genome/E1 gene with special reference to the 2005–07 outbreak in the Indian subcontinent

Chikungunya (CHIK) virus reemerged during 2005–07 as an important pathogen causing massive disease outbreaks affecting India and several countries of the Indian Ocean. Knowledge of the evolutionary rates and divergence times of the CHIK virus may help to better understand the disease epidemiology. Considering the limited availability of such information, we estimated the substitution rates and the ancestral times for all the CHIK genotypes and also the time to the most recent common ancestor (tMRCA) of the 2005–07 isolates. Using whole genomes and partial E1 gene datasets, we applied the Bayesian Markov Chain Monte Carlo (MCMC) framework that explicitly accounts for lineage-specific evolutionary rates through the use of ‘relaxed’ molecular clock models. Under a constant population relaxed clock model, the evolutionary timescale of CHIK viruses in this study was estimated to be in the last 300 years. The progenitor of the 2005–07 viruses was found to have existed around 9 years ago, and to have originated from Central Africa. The presence of a strain in India in 2000 that bears 99% identity with a Ugandan strain of 1982, which correlates with the tMRCA of the Indian and Indian Ocean isolates, confirms our earlier report that the progenitor of the 2005–07 isolates originates from Uganda's neighbourhood. The ‘A226V’ mutation that existed in the Indian Ocean isolates since late 2005 was found to occur only in the 2007 isolate from India. The study confirms the epidemiological data, specifically with regard to the re-emergence of CHIKV and throws light on the evolutionary dynamics of CHIK viruses.     

The best choice of equipment to obtain high quality standardised results in intra-oral photography – a comparison between the common practice in the UK and the gold standard set by the literature

Since digital technology made dental photography widely available, photographers have been trying to establish the ‘gold standard’ when obtaining intra-oral photographs. A basic knowledge of photographic principles, familiarity with particular dental techniques and a correct choice and use of equipment contribute significantly both to the standardisation and quality of photographs. A recent survey between members of the Institute of Medical Illustrators shed a light on the current practice in the UK. Medical photographers do not always have access to the full range of suitable equipment. A better selection of retractors and occlusal mirrors would undoubtedly contribute to higher quality images.     

The association of cardiorespiratory fitness with cardiometabolic factors,markers of inflammation,and endothelial dysfunction in Latino youth: findings from the Hispanic Community Children’s Health Study/Study of Latino Youth

Purpose

To evaluate the relationship of cardiorespiratory fitness (CRF) with cardiovascular disease risk factors and a biomarker of endothelial dysfunction (e-selectin) among Hispanic/Latino youth.

The Long-Term Cost to the UK NHS and Social Services of Different Durations of IV Thiamine (Vitamin B1) for Chronic Alcohol Misusers with Symptoms of Wernicke’s Encephalopathy Presenting at the Emergency Department

Background

Wernicke’s encephalopathy (WE) is an acute neuropsychiatric condition caused by depleted intracellular thiamine, most commonly arising in chronic alcohol misusers, who may present to emergency departments (EDs) for a variety of reasons. Guidelines recommend a minimum 5-day course of intravenous (IV) thiamine in at-risk patients unless WE can be excluded.

Objective

To estimate the cost impact on the UK public sector (NHS and social services) of a 5-day course of IV thiamine, vs a 2- and 10-day course, in harmful or dependent drinkers presenting to EDs.

Methods

A Markov chain model compared expected prognosis of patients under alternative admission strategies over 35 years. Model inputs were derived from a prospective cohort study, expert opinion via structured elicitation and NHS costing databases. Costs (2012/2013 price year) were discounted at 3.5 %.

Results

Increasing treatment from 2 to 5 days increased acute care costs but reduced the probability of disease progression and thus reduced the expected net costs by GBP87,000 per patient (95 % confidence interval GBP19,300 to GBP172,300) over 35 years.

Conclusions

Increasing length of stay to optimize IV thiamine replacement will place additional strain on acute care but has potential UK public sector cost savings. Social services and the NHS should explore collaborations to realise both the health benefits to patients and savings to the public purse.

     

Does it matter what your reasons are when deciding to disclose (or not disclose) a disability at work? The association of workers’ approach and avoidance goals with perceived positive and negative workplace outcomes

Deciding whether to disclose a disability to others at work is complex. Many chronic mental and physical health conditions are associated with episodic disability and include times of relative wellness punctuated by intermittent periods of activity limitations. This research draws on the disclosure processes model to examine approach and avoidance disclosure and non-disclosure goals and their association with perceived positive and negative workplace outcomes. Participants were 896 employed individuals (57.7% women) living with a chronic physical or mental health/cognitive condition. They were recruited from an existing national panel and completed an online, cross-sectional survey. Participants were asked about disclosure decisions, reasons for disclosure/non-disclosure, demographic, work context and perceived positive and negative disclosure decision outcomes (e.g., support, stress, lost opportunities). About half the sample (51.2%) had disclosed a disability to their supervisor. Decisions included both approach and avoidance goals. Approach goals (e.g., desire support, want to build trust, maintain the status quo at work) were significantly associated with perceived positive work outcomes regardless of whether a participant disclosed or did not disclose a disability at work, while avoidance goals (e.g., concerns about losing one’s job, feeling forced to disclose because others notice a problem) were associated with perceived negative work outcomes. The findings highlight benefits and challenges that workers perceive arise when they choose to disclose or not disclose personal health information. By better understanding disclosure decisions, we can inform organizational health privacy and support gaps to help sustain the employment of people living with disabilities.

     

When do online sexual fantasies become reality? The contribution of erotic chatting via the Internet to sexual risk-taking in gay and other men who have sex with men

Seeking sexual partners online is associated with sexual risk-taking among men who have sex with men (MSM), but it is not well understood how this use of the Internet is implicated in potential sexual risks. The present study explores whether fantasizing about unprotected anal intercourse (UAI) during online chatting is associated with UAI with partners met online. An online survey of 2058 MSM in France included assessments of UAI with partners met online, responses to erotic chatting about UAI, intentions to use condoms, attitudes regarding UAI, practicing UAI with casual partners, alcohol and drug use with sex and biographical characteristics. While intentions to use condoms with casual partners were high, one-third (32.1%) of respondents reported UAI with partners met online. Responding positively to online chatting about UAI was significantly associated with UAI with partners met online, controlling for intentions, attitudes, behavior and biographic characteristics. These findings suggest that, while MSM may not go online to seek UAI, some engage in online fantasizing about UAI that is associated with possible sexual risk-taking. This speaks critically to the assumption that online fantasizing has no behavioral implications, and underscores the importance of human immunodeficiency virus prevention that addresses the dynamics of online chatting.