Search results for "longitudinal study"
showing 10 items of 600 documents
Long-term serial kinetics of N-terminal pro B-type natriuretic peptide and carbohydrate antigen 125 for mortality risk prediction following acute hea…
2017
Aim: Baseline values of N-terminal pro B-type natriuretic peptide (NT-proBNP) and carbohydrate antigen 125 (CA125) predict all-cause mortality in acute heart failure (AHF). However, there is limited information about the added prognostic benefit of using longitudinal values, and how this predictive ability is modified when modelling together. The aim of this study was to determine the mutually-adjusted association between the longitudinal trajectories of NT-proBNP and CA125 with all-cause mortality after an episode of AHF. Methods and results: We included 946 consecutive patients discharged for AHF. NT-proBNP and CA125 were measured at each physician-patient encounter (median (interquartile…
Short-Term Effects of Air Pollution on Cardiovascular Hospitalizations in the Pisan Longitudinal Study
2021
Air pollution effects on cardiovascular hospitalizations in small urban/suburban areas have been scantly investigated. Such effects were assessed among the participants in the analytical epidemiological survey carried out in Pisa and Cascina, Tuscany, Italy (2009–2011). Cardiovascular hospitalizations from 1585 subjects were followed up (2011–2015). Daily mean pollutant concentrations were estimated through random forests at 1 km (particulate matter: PM10, 2011–2015
Breakthrough Pain in Advanced Cancer Patients Followed at Home: A Longitudinal Study
2009
The aim of this study was to longitudinally assess breakthrough pain (BP) in advanced cancer patients who were admitted to home palliative care. One hundred and one consecutive patients who were admitted to one of the two home care programs and were representative of the cancer population followed at home in Italy were included. Patients were excluded only if at admission they were cognitively impaired or too unwell to provide reliable answers to questions regarding data collection. At admission (T(0)), and one month later (T(1)), data were recorded about the pharmacological treatment of background pain and its effectiveness; the presence of BP and its intensity, duration, and number of epi…
Early maturation and substance use across adolescence and young adulthood: A longitudinal study of Finnish twins.
2017
AbstractEarly maturation, indexed by pubertal development (PD), has been associated with earlier initiation and greater frequency of adolescent substance use, but this relationship may be biased by confounding factors and effects that change across development. Using a population-based Finnish twin sample (N = 3,632 individuals), we conducted twin modeling and multilevel structural equation modeling of the relationship between PD and substance use at ages 12–22. Shared environmental factors contributed to early PD and heavier substance use for females. Biological father absence was associated with early PD for boys but not girls, and did not account for the relationship between PD and subst…
B2B services: IT adoption in travel agency supply chains
2008
PurposeThe purpose of this paper is to examine and test a model which integrates the antecedents and consequences of adopting information technology (IT) with suppliers (i.e. online communication and e‐procurement) in the context of the travel agency supply chain.Design/methodology/approachA mail survey was conducted among 101 managers of travel agencies. A structured questionnaire was developed to measure the informants' scores on a set of the model constructs (i.e. IT adoption, B2B interactions, environmental factors, sales performance, efficiency, and relationship development).FindingsThe findings confirm the influence of e‐communication on e‐procurement in supply chains. Regarding the a…
The Evolution of Loyalty Intentions
2006
The drivers of customer loyalty intentions are dynamic. What remains unclear is how these intentions evolve through the introduction and growth phases of a life cycle. Using a longitudinal study of cellular phone customers, the authors demonstrate that loyalty intentions are a function of perceived value early in the life cycle. Over time, more affective attitudes toward the brand and the relationship with the company come to mediate the effects of value on intentions. The results suggest that from the introduction to the growth stage of a life cycle, managers must adapt from improving value per se to measuring and managing relationships and brands directly.
Internalizing problems as a mediator in the relationship between low effortful control and internet abuse in adolescence: A three-wave longitudinal s…
2019
Abstract The aim of the study is to examine the relationships between early adolescents' low effortful control, middle adolescents' internalizing problems and late adolescents' Internet abuse, focusing on the mediating role that middle adolescents' internalizing problems may play in the relationship between early adolescents' low effortful control and late adolescents' Internet abuse. The study followed a sample of 482 adolescents (245 boys and 237 girls) from early adolescence (wave 1; mean age = 14.76, SD = 0.63), through middle adolescence (wave 2; mean age = 15.77, SD = 0.61), to late adolescence (wave 3; mean age = 17.88, SD = 0.57). The participants completed self-report questionnaire…
Developmental dynamics between children’s externalizing problems, task-avoidant behavior, and academic performance in early school years: A 4-year fo…
2015
This longitudinal study investigated the associations among children’s externalizing problems, task-avoidant behavior, and academic performance in early school years. The participants were 586 children (43% girls, 57% boys). Data pertaining to externalizing problems (teacher ratings) and task-avoidant behaviors (mother and teacher ratings) were gathered, and the children were tested yearly on their academic performance in Grades 1–4. The results were similar for both genders. The analyses supported a mediation model: high externalizing problems in Grades 1 and 2 were linked with low academic performance in Grades 3 and 4 through increases in task-avoidant behavior in Grades 2 and 3. The res…
Influences on the Development of Economic Knowledge over the First Academic Year
2020
Despite significant research, it remains unclear whether the goal of developing domain-specific knowledge in higher education is actually being achieved. This is also true for the internationally most popular study domain of business and economics. In Germany, a test for measuring economic knowledge was validated, enabling the analysis of change in knowledge over the course of studies. Business and economics students from across Germany were surveyed over the course of one study year: 7,111 beginning students in the winter term of 2016/2017, and 1,705 third semester students in the winter term of 2017/2018. Investigating the longitudinal matched sample of 734 students who took part at both …
The COVID-19 Assessment for Survival at Admission (CASA) Index: A 12 Months Observational Study
2021
Objective: Coronavirus disease 2019 (COVID-19) is a disease with a high rate of progression to critical illness. However, the stratification of patients at risk of mortality is not well defined. In this study, we aimed to define a mortality risk index to allocate patients to the appropriate intensity of care.Methods: This is a 12 months observational longitudinal study designed to develop and validate a pragmatic mortality risk score to stratify COVID-19 patients aged ≥18 years and admitted to hospital between March 2020 and March 2021. Main outcome was in-hospital mortality.Results: 244 patients were included in the study (mortality rate 29.9%). The Covid-19 Assessment for Survival at Admi…