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There is an increasing incidence of new HIV‐1 diagnoses among black Caribbeans in the UK, but there has been limited research in this area. The LIVITY study is the first in‐depth epidemiological and behavioural study to examine the impact of HIV among black Caribbeans in the UK. The UK black Caribbean community has traditionally been regarded as less likely to participate in clinical research and surveys. We identified three major challenges to recruitment to the LIVITY study: general distrust of the research process; the considerable stigma surrounding HIV in the black Caribbean community and the sensitivity of obtaining detailed sexual histories. The strategies devised to help overcome these barriers to optimise recruitment included: the establishment of a black Caribbean Community Advisory Group to facilitate communication between the community and the researchers and assist in questionnaire design to improve acceptability to the participants; use of healthcare practitioners as gatekeepers; extensive piloting and modification of the questionnaire among black Caribbean patients; reassurances of confidentiality during recruitment; and ethnic matching between interviewer and study participants. Another challenge was the high rate of loss to follow‐up among eligible patients, potentially compromising the study’s generalisability. Nevertheless, use of the above strategies resulted in a satisfactory enrolment rate of 57%, who were representative of all eligible patients.  相似文献   
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This paper deals with the analysis of the misery index in a group of 55 African countries by using fractional integration or I(d) techniques. In doing so, we can measure the degree of persistence of the index in a more flexible way than with other methods that simply use integer degrees of differentiation (zero or one). Our results indicate a large degree of heterogeneity across the countries, with some showing short memory behaviour (d?=?0); others long memory mean reverting behaviour (0?<?d?<?1) and others indicating the presence of unit roots (d?=?1). Thus, shocks will have different effects depending on the country examined. Generally, we also find a positive relationship between the levels of persistence and income.

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There is emerging evidence to suggest that children who come to the attention of child protective authorities are more likely to experience out-of-home placement if their families are affected by domestic violence than other reasons for investigation. To develop a better understanding of child welfare-involved families that are exposed to domestic violence, this article provides a comprehensive review of research examining the effects of domestic violence on the likelihood of out-of-home placement and family reunification. A search of the literature resulted in 16 articles that met the study's criteria. Data suggested that domestic violence may be negatively related to out-of-home placement depending on the sample type, and marginally related to family reunification. Recommendations and implications related to future research are presented.  相似文献   
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