Search results for "Explained variation"
showing 10 items of 51 documents
Child consumption of fruit and vegetables: the roles of child cognitions and parental feeding practices
2011
AbstractObjectiveTo examine the roles of child cognitions and parental feeding practices in explaining child intentions and behaviour regarding fruit and vegetable consumption.DesignCross-sectional surveys among pre-adolescent children and their parents.SettingThe child questionnaire included measures of fruit and vegetable consumption and cognitions regarding fruit and vegetable consumption as postulated by the Attitude–Social Influence–Self-Efficacy (ASE) model. The parent questionnaire included measures of parental feeding practices derived from the Comprehensive Feeding Practices Questionnaire (CFPQ).SubjectsIn total, 963 parents and 796 students in grades 5 and 6 from eighteen schools …
Development of a short questionnaire based on the Practice Environment Scale-Nursing Work Index in primary health care
2019
BackgroundProfessional nursing environments determine the quality of care and patient outcomes. Assessing the quality of environments is essential to improve and obtain better health outcomes. Simplifying and shortening the way to evaluate environments reliably is also important to help nurses better understand the strengths and weaknesses of their environments. In that sense, identifying essential elements of nursing environments would allow the construction of short assessment tools to improve such environments.ObjectiveTo construct a short tool to assess primary health care (PHC) nursing environments based on the Practice Environment Scale-Nursing Work Index (PES-NWI) questionnaire.Metho…
Contenidos obsesivos, miedo a la enfermedad y asco
2015
Recently, data about the associations between disgust and obsessive-compulsive disorder (OCD) have show some inconsistencies, which might be due to the differential role of disgust sensitivity and propensity, the infl uence of other variables, or the heterogeneity of OCD contents. This study examines the relationships among disgust sensitivity and propensity, fear of illness, and different obsessional contents in university students (N = 114). Disgust propensity was the most relevant variable in predicting Doubt/checking contents (19% of explained variance, EV), and fear of illness and disgust sensitivity were the most relevant variables predicting Contamination (EV: 21% and 8%, respectivel…
Efecto moderador de la institucionalización en las actividades de la vida diaria y bienestar en el envejecimiento
2012
OBJETIVO: El envejecimiento con éxito es un concepto multidimensional que se puede evaluar a partir de componentes objetivos y subjetivos como el funcionamiento físico, psicológico y social. El objetivo de este trabajo es comparar el funcionamiento en variables relacionadas con el envejecimiento exitoso en ancianos institucionalizados y no institucionalizados. MÉTODO: Se realizó un diseño de dos grupos independientes, institucionalizados (N=242) y no institucionalizados (N=607), todos de más de 65 años, evaluándose sus actividades de la vida diaria (AVD) y el bienestar psicológico. RESULTADOS: El Índice de Barthel mostró diferencias significativas, siendo inferior la media de los institucio…
Urban layout, landscape features and pedestrian usage
2007
ACL; International audience; The analysis of the factors which condition walking in the urban environment is an important issue in urban planning. The present work is based on the hypothesis that the landscape, in its entirety, plays a role in encouraging pedestrian movements. The frequency of pedestrian traffic in the streets is analyzed as a function of accessibility and landscape preferences with the help of a conceptual framework. By defining accessibility as the measurement of the integration of the space syntax, preferences are researched using multiple stepwise regression of visual variables. This method has been applied to an area in the city of Lille (France) where the pedestrian f…
A New Multiblock PLS Based Method to Estimate Causal Models: Application to the Post-Consumption Behavior in Tourism
2009
This study presents a new algorithm for estimating causal models based on multiblock PLS method. This new algorithm is tested in a particular post-consumption behavior with the aim of validating a complex system of relations between antecedents of value, perceived value, satisfaction and loyalty. The results are compared with the classical LVPLS method: both methods support the proposed structural relations, but the explained variance is slightly higher with the new algorithm.
Comparison of sampling methods and habitat types for detecting impacts on lake littoral macroinvertebrate assemblages along a gradient of human distu…
2010
We explored environmental variables structuring littoral macroinvertebrate communities in a large lake basin along a gradient of nutrient enrichment. Furthermore, we evaluated sensitivity and cost-effi ciency of different sampling schemes (i.e. combinations of three habitat types and a number of standard sampling methods) to detect changes in macroinvertebrate communities along this anthropogenic disturbance gradient. Partial canonical ordination analysis showed that habitat characteristics accounted for a major part (56 % uniquely) of the explained variation in the species composition of invertebrate communities. When different mesohabitats were examined separately, assemblage variation of…
Comparing biological classifications of freshwater phytoplankton: a case study from South China
2012
The use of ecological classification systems is becoming more and more widely used when studying phytoplankton. Grouping phytoplankton species into ecologically coherent groups allow to reduce redundancy and in this way, to handle a minor number of biological variables when investigating the ecological status of aquatic ecosystems. Three ecological classifications are mostly used when freshwater phytoplankton is studied: functional groups or coda, morpho-functional groups (MFGs) and morphology-based functional groups (MBFGs). In this study, these three ecological classifications were comparatively used along with two taxonomic classifications based on species and genera to analyse phytoplan…
Comparison between splines and fractional polynomials for multivariable model building with continuous covariates: a simulation study with continuous…
2012
In observational studies, many continuous or categorical covariates may be related to an outcome. Various spline-based procedures or the multivariable fractional polynomial (MFP) procedure can be used to identify important variables and functional forms for continuous covariates. This is the main aim of an explanatory model, as opposed to a model only for prediction. The type of analysis often guides the complexity of the final model. Spline-based procedures and MFP have tuning parameters for choosing the required complexity. To compare model selection approaches, we perform a simulation study in the linear regression context based on a data structure intended to reflect realistic biomedica…
Voluntary associations and trust in Finland
2009
The article is an empirical study of the hypothesis put forward in theories of social capital, according to which voluntary associations have a positive e ect on trust in people. The central research question of the article is: are association memberships or active participation related to trust towards people in Finland? Looking at the number of association memberships and association registrations shows that association life has been active in Finland. The international comparison shows that particularly in the Nordic countries, people participate in associations on a vast scale. However, it is also important to note that while the old politicalideological associations have lost some of t…