We introduce a new asymmetry in the decay t -> W b -> l nu b, which is shown to be directly proportional to the polarisation of the top quark along a chosen axis, times a sum of W helicity fractions. The latter have already been precisely measured at the Tevatron and the Large Hadron Collider. Therefore, this new asymmetry can be used to obtain a model-independent measurement of the polarisation of top quarks produced in any process at hadron or lepton colliders.Comment: LaTeX 12 pages. Discussion expanded with a new plot, references added. Final version to appear in PL

Background Nursing homes are likely to become increasingly important as end-of-life care facilities. Previous studies indicate that individuals residing in these facilities have a high prevalence of end-of-life symptoms and a significant need for palliative care. The aim of this study was to develop an end-of-life care program for nursing homes in Spain based on previous models yet adapted to the specific context and the needs of staff in nursing homes in the country. Methods A descriptive study of a complex intervention procedure was developed. The study consisted of three phases. The first phase was a prospective study assessing self-efficacy in palliative care (using the SEPC scale) and attitudes towards end-of-life care (using the FATCOD-B scale) among nursing home staff before and after the completion of a basic palliative care training program. In the second phase, objectives were selected using the Delphi consensus technique, where nursing home and primary care professionals assessed the relevance, feasibility, and level of attainment of 42 quality standards. In phase 3, interventions were selected for these objectives through two focus group sessions involving nursing home, primary care, and palliative care professionals. Results As a result of the training, an improvement in self-efficacy and attitudes towards end-of-life care was observed. In phase 2, 14 standards were selected and grouped into 5 objectives: to conduct a comprehensive assessment and develop a personalized care plan adapted to the palliative needs detected; to provide information in a clear and accessible way; to request and record advance care directives; to provide early care with respect to loss and grief; to refer patients to a specialized palliative care unit if appropriate, depending on the complexity of the palliative care required. Based on these objectives, the participants in the focus group sessions designed the 22 interventions that make up the program. Conclusions The objectives and interventions of the NUHELP program constitute an end-of-life care program which can be implemented in nursing homes to improve the quality of end-of-life care in these facilities by modifying their clinical practice, organization, and relationship with the health system as well as serving as an example of an effective health intervention program.

The cultural self-efficacy level of this sample of nursing professionals, with their consequent capacity to provide culturally competent care, is moderate and is associated with sex and age. Confidence in knowledge of cultural concepts is affected by age, educational level, years of experience, and cross-cultural experiences. This evidence supports the implementation of changes to improve the cultural knowledge and therefore cultural self-efficacy of these professionals.

The aim of the present study is to validate the Self-Efficacy in Palliative Care Scale (SEPC) in Spanish nursing professionals and students, to describe their levels of self-efficacy, and to determine the influencing factors. A validation study and a cross-sectional descriptive study were carried out, with the data analysed using contrast tests and multiple linear regression; 552 nurses and 440 nursing students participated. The Spanish version consists of 23 items and has a high degree of reliability (α = 0.944). Confirmatory factor analysis revealed one additional factor (i.e., management of psychosocial and spiritual aspects) in comparison to the original scale. Contrast tests revealed that the mean SEPC score was higher in professionals than in students (p < 0.001) and that the professionals who had higher levels of self-efficacy were older (p < 0.001), had more previous training (p < 0.001), and had more experience in end-of-life care (p = 0.001). The linear analysis results confirm a significant association between age and previous training in end-of-life care. The Spanish version of the SEPC is a reliable tool for both nursing professionals and students. The level of self-efficacy of both groups is moderate and is influenced by age, experience, and training in end-of-life care.

The results demonstrated that the version of the Cultural Self-Efficacy Scale adapted to the Colombian context is a valid and reliable instrument for determining the level of cultural self-efficacy of nursing professionals.

Objective The aim of this study is to culturally adapt and validate the Frommelt Attitude Toward Care of the Dying Scale Form B (FATCOD-B) in Spanish health professionals. Method A cultural adaptation and scale validation was carried out to evaluate the validity of appearance, content and construct, reliability and feasibility. The psychometric validation of the FATCOD-B was carried out on a sample of 2,446 Spanish physicians, nurses, psychologists, and social workers and students of these disciplines, between January 2017 and December 2018. This sample was selected by intentional sampling. Descriptive statistics were used to characterize the sample. An exploratory multi-group factor analysis was performed, internal consistency was evaluated by calculating Cronbach's α and stability by test–retest. Results A total of 2,446 people participated in the study, 1,134 students and 1,312 professionals. The exploratory multi-group factor analysis revealed a two-dimensional factor structure, with a total of 17 items retained in the model from the 30 of the original scale. The results showed that this version has adequate reliability (α = 0.79) and for each subscale, and stability (ICC = 0.843, p < 0.001). Significance of results FATCOD has been used with physicians and nurses from different countries. However, no reports have been found in the literature of its use with psychologists and social workers. It is important to have an instrument that allows us to know the attitudes of these professionals since they are all directly involved in the care of patients at the end of their lives and their families. The Spanish version of FATCOD-B has proven to be a reliable and valid instrument for its use in Spanish health professionals while allowing comparisons between disciplines.

Inflammatory bowel diseases generate disability. We aimed to adapt and validate the Inflammatory Bowel Disease Disability Index in a Spanish population and to analyze the sociodemographic and clinical factors associated with disability in patients with Crohn’s disease and ulcerative colitis. Cultural adaptation and validation of psychometric properties in the index were done, along with an observational, cross-sectional, and analytical approach to determine associations with sociodemographic and clinical factors. Sociodemographic data, quality of life (using the Inflammatory Bowel Disease Questionnaire-32), and indicators of disease activity were collected, among others. A total of 170 subjects participated. The index showed high internal consistency, with a Cronbach’s alpha of 0.869 and concurrent validity with the Inflammatory Bowel Disease Questionnaire-32 (r = 0.723, p < 0.001). The average score of the index was −3.91. Greater degrees of disability were found in women (mean = −6.77) than in men (mean = −1.25) (p = 0.018), in patients with Crohn’s disease (mean = −5.94) rather than those with ulcerative colitis (mean = −0.94) (p = 0.028), and in patients in the moderately active disease phase (mean = −20.94) rather than those in the mildly active disease phase (mean = −2.65) and/or those in remission (mean = −1.40) (p < 0.001). The Disability Index is a valid tool for the Spanish population and is associated with sex, type of illness, and disease activity. It is a useful index in evaluating and monitoring disability in patients with inflammatory bowel disease.

The objective was to identify and analyze the scientific production on Transcultural Nursing in the international context in the period between 2007 and 2014.A literature review on the CINAHL and CUIDEN database was performed using the descriptor "Transcultural Nursing" and including only original or research articles published between 2007 and 2014. A documentary descriptive study of the selected literature was carried out using bibliometric indicators.A total of 155 articles were obtained. The profile of the publications is the one of works signed by 2 or three women authors who mainly belong to the nursing discipline and whose work reference institution is the university. Most of these studies were conducted in the United States, Brazil and Spain. They are fundamentally qualitative design studies that address as major thematic the experiences and beliefs regarding health or disease, the training of students and professionals, and their proceeding in the field of cultural diversity.Key words: Transcultural nursing, culture, review literature as topic, bibliometrics, review. RESUMENEl objetivo fue identificar y analizar la producción científica sobre Enfermería Transcultural en el contexto internacional en el periodo de tiempo comprendido entre los años 2007 y 2014.Se realizó una revisión bibliográfica en las bases de datos CINAHL y CUIDEN empleando el descriptor "Enfermería Transcultural" e incluyendo exclusivamente artículos originaProducción científica en enfermería transcultural en el periodo