City University London

About: City University London is a education organization based out in London, United Kingdom. It is known for research contribution in the topics: Population & Health care. The organization has 5735 authors who have published 17285 publications receiving 453290 citations.

Quality of life in the third age: key predictors of the CASP-19 measure

Abstract: This article aims to identify and analyse the lifecourse and contextual factors that influence the quality of life in early old age. We conceptualise quality of life as distinct from the factors which influence it, and employ a model of the quality of life that is derived from an explicit theory of human need. The operational measure (CASP-19) consists of 19 Likert-scaled items which cover four theoretical domains: control, autonomy, self-realisation and pleasure. A postal questionnaire was sent to 286 British people aged 65-75 years who were members of the sample for the 1930s Boyd-Orr study of health and diet and who had been followed up through retrospective interviews during the late 1990s. The 286 were broadly representative of their age group. The survey's response rate was 92 per cent. Respondents provided information on a number of contextual influences on their quality of life in early old age, notably social support and participation, the quality and quantity of social contact, feelings of trust and reciprocity about the local neighbourhood, health and financial security. In the analyses reported here, a series of conceptual and operational influences on quality of life in early old age is identified using block regression models. Finally, the relative impact of each predictor on CASP-19 is examined. The findings suggest that the legacy of the past tends to be best captured by people-Is feelings about the adequacy of their pensions and their status as owner-occupiers as well as a feeling that the area in which they live is deprived. The quality of the social contact people describe and how close they-feel to those around them will ameliorate the negative impacts of the past and the immediate environment. In addition I we must recognise that people remain vulnerable to the impact of loss: recent bereavement, and major illnesses can impact on a person's quality of life.

Changing patterns of sexual behaviour in the era of highly active antiretroviral therapy.

Abstract: Purpose of reviewTo describe changing patterns of sexual behaviour in the era of highly active antiretroviral therapy among gay/bisexual men in Europe, Canada, USA and Australia.Recent findingsWhile there has been a substantial increase in high-risk sexual behaviour among gay men since 1996, this no

Cerebral artery dilatation maintains cerebral oxygenation at extreme altitude and in acute hypoxia--an ultrasound and MRI study.

Abstract: Transcranial Doppler is a widely used noninvasive technique for assessing cerebral artery blood flow. All previous high altitude studies assessing cerebral blood flow (CBF) in the field that have used Doppler to measure arterial blood velocity have assumed vessel diameter to not alter. Here, we report two studies that demonstrate this is not the case. First, we report the highest recorded study of CBF (7,950 m on Everest) and demonstrate that above 5,300 m, middle cerebral artery (MCA) diameter increases (n=24 at 5,300 m, 14 at 6,400 m, and 5 at 7,950 m). Mean MCA diameter at sea level was 5.30 mm, at 5,300 m was 5.23 mm, at 6,400 m was 6.66 mm, and at 7,950 m was 9.34 mm (P<0.001 for change between 5,300 and 7,950 m). The dilatation at 7,950 m reversed with oxygen. Second, we confirm this dilatation by demonstrating the same effect (and correlating it with ultrasound) during hypoxia (FiO2=12% for 3 hours) in a 3-T magnetic resonance imaging study at sea level (n=7). From these results, we conclude that it cannot be assumed that cerebral artery diameter is constant, especially during alterations of inspired oxygen partial pressure, and that transcranial 2D ultrasound is a technique that can be used at the bedside or in the remote setting to assess MCA caliber.

Assessment for selection for the health care professions and specialty training: Consensus statement and recommendations from the Ottawa 2010 Conference

Abstract: Assessment for selection in medicine and the health professions should follow the same quality assurance processes as in-course assessment. The literature on selection is limited and is not strongly theoretical or conceptual. For written testing, there is evidence of the predictive validity of Medical College Admission Test (MCAT) for medical school and licensing examination performance. There is also evidence for the predictive validity of grade point average, particularly in combination with MCAT for graduate entry but little evidence about the predictive validity of school leaver scores. Interviews have not been shown to be robust selection measures. Studies of multiple mini-interviews have indicated good predictive validity and reliability. Of other measures used in selection, only the growing interest in personality testing appears to warrant future work. Widening access to medical and health professional programmes is an increasing priority and relates to the social accountability mandate of medical and health professional schools. While traditional selection measures do discriminate against various population groups, there is little evidence on the effect of non-traditional measures in widening access. Preparation and outreach programmes show most promise. In summary, the areas of consensus for assessment for selection are small in number. Recommendations for future action focus on the adoption of principles of good assessment and curriculum alignment, use of multi-method programmatic approaches, development of interdisciplinary frameworks and utilisation of sophisticated measurement models. The social accountability mandate of medical and health professional schools demands that social inclusion, workforce issues and widening of access are embedded in the principles of good assessment for selection.

Cost X-Efficiency in China's Banking Sector

Abstract: Employing the stochastic frontier approach, this paper investigates cost X-efficiency in China's banking sector over the period 1985-2002. The objective is to assess whether different ownership types and banking reforms affect X-efficiency. A two-stage regression model is estimated to identify the significant variables influencing X-efficiency. The results show that on average, banks are operating 50-60% below the X-efficiency frontier. The jointstock banks are found to be more X-efficient than the state-owned commercial banks, and it appears that X-efficiency was higher during the first phase of bank reform.