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171.
Cédric Heuchenne Stéphane Laurent Catherine Legrand Ingrid Van Keilegom 《统计学通讯:模拟与计算》2013,42(5):1112-1132
Consider semi-competing risks data (two times to concurrent events are studied but only one of them is right-censored by the other one) where the link between the times Y and C to non-terminal and terminal events, respectively, is modeled by a family of Archimedean copulas. Moreover, both Y and C are submitted to an independent right censoring variable D. We propose to estimate the parameter of the copula and some resulting survival functions using a pseudo maximum likelihood approach. The main advantage of this procedure is that it extends to multidimensional parameters copulas. We perform simulations to study the behavior of our estimation procedure and its impact on other related estimators and we apply our method to real data coming from a study on the Hodgkin disease. 相似文献
172.
Lena B. Mårtensson Kristina Ek Anette Ekström Ingrid H.E. Bergh 《Women and birth : journal of the Australian College of Midwives》2014,27(2):104-107
BackgroundThe Visual Analogue Scale (VAS) is one of the most widely used pain assessment scales in clinical practice and research. However, the VAS is used less frequently in midwifery than in other clinical contexts. The issue of how people interpret the meaning of the VAS endpoints (i.e. no pain and worst imaginable pain) has been discussed. The aim of this study was to explore midwifery students’ conceptions of ‘worst imaginable pain’.MethodsA sample of 230 midwifery students at seven universities in Sweden responded to an open-ended question: ‘What is the worst imaginable pain for you?’ This open-ended question is a part of a larger study. Their responses underwent manifest content analysis.ResultsAnalysis of the midwifery students’ responses to the open-ended question revealed five categories with 24 sub-categories. The categories were Overwhelming pain, Condition-related pain, Accidents, Inflicted pain and Psychological suffering.ConclusionsThe midwifery students’ conceptions of ‘worst imaginable pain’ are complex, elusive and diverse. 相似文献
173.
Kim Foster Ingrid McPhee Judith Fethney Andrea McCloughen 《Child & Family Social Work》2016,21(3):295-306
Children in families with mental health problems may encounter multiple risks to their well‐being. General aims of peer support programmes for these children include fostering resilience and effective coping strategies, and enhancing self‐esteem and social skills. This study aimed to evaluate outcomes from a pilot multi‐site implementation of the ON FIRE peer support programme. The purpose of ON FIRE is to cultivate hope, resilience and well‐being in children and adolescents aged 8–17 years living in families affected by sibling or parental mental health problems. We employed a pre‐post test (baseline and 4 months) evaluation using a suite of outcome measures. The Strengths and Difficulties Questionnaire (SDQ), Children's Hope Scale, Kids Connections Scale and Positive and Negative Affect Scale for Children (PANAS‐C) were completed for 64 child/adolescent participants. At baseline, participants had significantly greater difficulties compared with Australian norms. At 4 months, there were significant differences in children's hope and in connections outside the family. There were no significant differences in the SDQ or the PANAS‐C. 相似文献
174.
Xiaohong Chen Oliver Linton Ingrid Van Keilegom 《Econometrica : journal of the Econometric Society》2003,71(5):1591-1608
We provide easy to verify sufficient conditions for the consistency and asymptotic normality of a class of semiparametric optimization estimators where the criterion function does not obey standard smoothness conditions and simultaneously depends on some nonparametric estimators that can themselves depend on the parameters to be estimated. Our results extend existing theories such as those of Pakes and Pollard (1989), Andrews (1994a), and Newey (1994). We also show that bootstrap provides asymptotically correct confidence regions for the finite dimensional parameters. We apply our results to two examples: a ‘hit rate’ and a partially linear median regression with some endogenous regressors. 相似文献