Search results for "Causa"
showing 10 items of 661 documents
Lag-specific transfer entropy as a tool to assess cardiovascular and cardiorespiratory information transfer
2014
In the study of interacting physiological systems, model-free tools for time series analysis are fundamental to provide a proper description of how the coupling among systems arises from the multiple involved regulatory mechanisms. This study presents an approach which evaluates direction, magnitude, and exact timing of the information transfer between two time series belonging to a multivariate dataset. The approach performs a decomposition of the well-known transfer entropy (TE) which achieves 1) identifying, according to a lag-specific information-theoretic formulation of the concept of Granger causality, the set of time lags associated with significant information transfer, and 2) assig…
Greater university identification - but not greater contact - leads to more life satisfaction: evidence from a Spanish longitudinal study
2018
Background: A growing body of literature has highlighted the relationship between group identification (a subjective sense of belonging to one’s social group, coupled with a subjective sense of commonality with the group’s members) and wellbeing. However, little of this work is longitudinal, and few studies address reciprocal causality or control for intensity of contact with fellow group members.\ud \ud Method: We investigated the effect of university identification on satisfaction with life (SWL) over time (and vice versa) in 216 Spanish undergraduates, with seven months between T1 and T2. \ud Results: While greater university identification T1 predicted higher SWL T2, SWL T1 did not pred…
Overcommitment as a predictor of effort-reward imbalance: evidence from an 8-year follow-up study.
2016
Objective The effort–reward imbalance (ERI) model includes the personal characteristic of overcommitment (OC) and the job-related characteristics of effort, reward, and ERI, all of which are assumed to play a role in an employee’s health and well-being at work. The aim of the present longitudinal study was to shed more light on the dynamics of the ERI model by investigating the basic hypotheses related to the role of OC in the model, ie, to establish whether an employee’s OC could be a risk factor for an increased experience of high effort, low reward, and high ERI at work. Methods The study was based on 5-wave, 8-year follow-up data collected among Finnish professionals in 2006 (T1, N=747)…
Quantifying Net Synergy/Redundancy of Spontaneous Variability Regulation via Predictability and Transfer Entropy Decomposition Frameworks.
2017
Objective: Indexes assessing the balance between redundancy and synergy were hypothesized to be helpful in characterizing cardiovascular control from spontaneous beat-to-beat variations of heart period (HP), systolic arterial pressure (SAP), and respiration (R). Methods: Net redundancy/synergy indexes were derived according to predictability and transfer entropy decomposition strategies via a multivariate linear regression approach. Indexes were tested in two protocols inducing modifications of the cardiovascular regulation via baroreflex loading/unloading (i.e., head-down tilt at −25° and graded head-up tilt at 15°, 30°, 45°, 60°, 75°, and 90°, respectively). The net redundancy/synergy of …
Physical Activity, Sleep, and Symptoms of Depression in Adults - Testing for Mediation
2019
Abstract Purpose: Physical activity, sleep problems, and symptoms of depression contribute to overall well-being. The factors are reciprocally associated, but the nature of these associations remains unclear. The present study examined whether sleep problems mediated the association between physical activity and depressive symptoms. Methods: The eligible population (n = 3596) consisted of adults from the ongoing, population-based Cardiovascular Risk in Young Finns Study started in 1980. Participants’ leisure-time physical activity was assessed with physical activity index (2007) and sleep problems with Jenkins’ Sleep Questionnaire in 2007 and 2011. Depressive symptoms were measured using mo…
More than a leap of faith: the impact of biological and religious correlates on reproductive behavior.
2004
Using a conceptual model that integrates both social and biomedical factors of causation, this paper tries to delineate the pathways through which the reproductive characteristics of a multidenominational community are characterized. In total, 5513 historical entries from family reconstitution were available. Selection of data was guided by the inclusion of information about religious affiliation. Only married couples with children as well as single mothers with the relevant information were considered. Of these, 1855 entries were of Roman Catholic (C), 1143 of Lutheran/Protestant (L/P2), and 609 of Reformed Calvinist (R) denomination. The analysis documented differential nuptiality and fer…
God, Faith, and Death: The Impact of Biological and Religious Correlates on Mortality
2004
Marked denominational mortality differentials have been documented for various time periods and geographic locations. From a historical perspective, death rates among Catholics are often found to be higher than those among Protestants or Jews. Using a conceptual model based on the life history approach, biomedical and sociocultural factors of causation are extrapolated. In total, 5513 historical entries from family reconstitution were available. Selection of data was guided by the inclusion of information about religious affiliation. Only married couples with children as well as single mothers were considered. Of these, 1855 entries were of Roman Catholic (C), 1143 of Lutheran/Protestant (L…
Requestioning depression in patients with cancer: Contribution of somatic and affective symptoms to Beck's Depression Inventory
2007
Background: Depressive symptoms are a major complaint reported by cancer patients. Somatic and affective symptoms can contribute to depression. Patients and methods: We investigated the prevalence of somatic and affective depressive symptoms with the Beck Depression Inventory (BDI) in 213 hospitalized cancer patients prior to the start of chemotherapy. Results: Seventeen of 213 patients (8%) were screened positive for major depression; 40 (19%) had mild to moderate depressive symptoms. The corresponding figures for somatic and affective symptoms were 33.3% and 2.8% in the patients with major depression and 23.0% and 8.0% in those with mild to moderate depressive symptoms. Female patients, p…
Cardiac disease in patients with mucopolysaccharidosis: presentation, diagnosis and management
2011
The mucopolysaccharidoses (MPSs) are inherited lysosomal storage disorders caused by the absence of functional enzymes that contribute to the degradation of glycosaminoglycans (GAGs). The progressive systemic deposition of GAGs results in multi-organ system dysfunction that varies with the particular GAG deposited and the specific enzyme mutation(s) present. Cardiac involvement has been reported in all MPS syndromes and is a common and early feature, particularly for those with MPS I, II, and VI. Cardiac valve thickening, dysfunction (more severe for left-sided than for right-sided valves), and hypertrophy are commonly present; conduction abnormalities, coronary artery and other vascular in…
Right bundle branch block and SIQIII-type patterns for risk stratification in acute pulmonary embolism.
2016
Abstract Introduction Risk stratification in acute pulmonary embolism (PE) is crucial for identification of patients with poor prognosis. We aimed to investigate the ECG alterations of right bundle branch block (RBBB) and S I Q III -type patterns for risk stratification in acute PE. Materials and methods Retrospective analysis of PE patients, treated in the Internal Medicine Department, was performed. Patients with RBBB and/or S I Q III -type were compared with those without both patterns. Logistic regression models for association between these ECG alterations and respectively right ventricular dysfunction (RVD), high-risk PE status and myocardial injury were computed. Results 175 patients…