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Structural equation modeling

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https://www.readbyqxmd.com/read/29148860/the-role-of-distal-minority-stress-and-internalized-transnegativity-in-suicidal-ideation-and-nonsuicidal-self-injury-among-transgender-adults
#1
Jennifer M Staples, Elizabeth C Neilson, Amanda E B Bryan, William H George
Transgender people are at elevated risk for nonsuicidal self-injury (NSSI) and suicidal ideation compared to the general population. Transgender (trans) refers to a diverse group of people who experience incongruence between their gender identity and sex assigned at birth. The present study is guided by the minority stress model and the psychological mediation framework, which postulate that sexual minority groups experience elevated stress as a result of anti-minority prejudice, contributing to negative mental health outcomes...
November 17, 2017: Journal of Sex Research
https://www.readbyqxmd.com/read/29148146/factors-influencing-nurse-assessed-quality-nursing-care-a-cross-sectional-study-in-hospitals
#2
Ying Liu, Yupin Aungsuroch
AIM: To propose a hypothesized theoretical model and apply it to examine the structural relationships among work environment, patient-to-nurse ratio, job satisfaction, burnout, intention to leave and quality nursing care. BACKGROUND: Improving quality nursing care is a first consideration in nursing management globally. A better understanding of factors influencing quality nursing care can help hospital administrators implement effective programs to improve quality of services...
November 17, 2017: Journal of Advanced Nursing
https://www.readbyqxmd.com/read/29148023/fluid-structure-interaction-model-analysis-of-cerebrospinal-fluid-circulation-in-patients-with-continuous-flow-left-ventricular-assist-devices
#3
Jessica G Y Luc, Clifford A Pierre, Kevin Phan, Yashar S Vahedein, Alexander S Liberson, William K Cornwell, Steven J Phillips, Vakhtang Tchantchaleishvili
PURPOSE: The current 1-dimensional fluid structure interaction model (FSI) for understanding cerebrospinal fluid (CSF) circulation requires pulsatility as a precondition and has not been applied to patients with continuous-flow left ventricular assist devices (CF-LVAD) where pulsatility is chronically reduced. Our study aims to characterize the behavior of CSF pressure and flow in patients with CF-LVADs using a computational FSI model. METHODS: Utilizing the computational FSI model, CSF production in choroid plexuses of the 4 ventricles was specified as a boundary condition for the model...
November 16, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/29147132/numerical-investigation-of-pulse-wave-propagation-in-arteries-using-fluid-structure-interaction-capabilities
#4
Hisham Elkenani, Essam Al-Bahkali, Mhamed Souli
The aim of this study is to present a reliable computational scheme to serve in pulse wave velocity (PWV) assessment in large arteries. Clinicians considered it as an indication of human blood vessels' stiffness. The simulation of PWV was conducted using a 3D elastic tube representing an artery. The constitutive material model specific for vascular applications was applied to the tube material. The fluid was defined with an equation of state representing the blood material. The onset of a velocity pulse was applied at the tube inlet to produce wave propagation...
2017: Computational and Mathematical Methods in Medicine
https://www.readbyqxmd.com/read/29145938/teacher-factors-contributing-to-dosage-of-the-kiva-anti-bullying-program
#5
Lauren E Swift, Julie A Hubbard, Megan K Bookhout, Stevie N Grassetti, Marissa A Smith, Michael T Morrow
The KiVa Anti-Bullying Program (KiVa) seeks to meet the growing need for anti-bullying programming through a school-based, teacher-led intervention for elementary school children. The goals of this study were to examine how intervention dosage impacts outcomes of KiVa and how teacher factors influence dosage. Participants included 74 teachers and 1409 4th- and 5th-grade students in nine elementary schools. Teachers and students completed data collection at the beginning and end of the school year, including measures of bullying and victimization, correlates of victimization (depression, anxiety, peer rejection, withdrawal, and school avoidance), intervention cognitions/emotions (anti-bullying attitudes, and empathy toward victims), bystander behaviors, and teacher factors thought to relate to dosage (self-efficacy for teaching, professional burnout, perceived principal support, expected effectiveness of KiVa, perceived feasibility of KiVa)...
December 2017: Journal of School Psychology
https://www.readbyqxmd.com/read/29145847/a-path-analysis-study-of-factors-influencing-hospital-staff-perceptions-of-quality-of-care-factors-associated-with-patient-satisfaction-and-patient-experience
#6
Sandra G Leggat, Leila Karimi, Timothy Bartram
BACKGROUND: Hospital staff are interested in information on patient satisfaction and patient experience that can help them improve quality of care. Staff perceptions of quality of care have been identified as useful proxies when patient data are not available. This study explores the organizational factors and staff attitudes that influence staff perceptions of the quality of the care they provide in relation to patient satisfaction and patient experience. METHODS: Cross sectional survey completed by 258 staff of a large multi-campus, integrated metropolitan hospital in Australia...
November 16, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/29145423/examining-the-relationships-between-body-image-eating-attitudes-bmi-and-physical-activity-in-rural-and-urban-south-african-young-adult-females-using-structural-equation-modeling
#7
Alessandra Prioreschi, Stephanie V Wrottesley, Emmanuel Cohen, Ankita Reddy, Rihlat Said-Mohamed, Rhian Twine, Stephen M Tollman, Kathleen Kahn, David B Dunger, Shane A Norris
The persistence of food insecurity, malnutrition, increasing adiposity, and decreasing physical activity, heightens the need to understand relationships between body image satisfaction, eating attitudes, BMI and physical activity levels in South Africa. Females aged 18-23 years were recruited from rural (n = 509) and urban (n = 510) settings. Body image satisfaction was measured using Stunkard's silhouettes, and the 26-item Eating Attitudes questionnaire (EAT-26) was used to evaluate participants' risk of disordered eating...
2017: PloS One
https://www.readbyqxmd.com/read/29144979/who-crosses-the-norms-predictors-of-the-readiness-for-non-normative-political-participation-among-adolescents
#8
Jan Šerek, Hana Machackova, Petr Macek
This study investigated whether adolescents' readiness for non-normative political participation (i.e., readiness to confront social rules for political reasons) was predicted by their interpersonal problems (with parents, teachers, and classmates), low optimism, and political beliefs (political self-efficacy and distrust in public institutions). A structural equation model using two-wave longitudinal data from Czech high school students (N = 768; 54% females; age range at T1 = 14-17, M = 15.97; T2 data collected 1...
November 13, 2017: Journal of Adolescence
https://www.readbyqxmd.com/read/29144308/numerical-simulation-of-filtration-performance-in-submerged-membrane-bioreactors-effect-of-particle-packed-structure
#9
Zhidong Wang, Kuizu Su, Tong Shu, Weihong Wang
It is widely known that the accumulation of solid matter forming a cake layer on the membrane surface is one of the major limitations of the filtration performance in submerged membrane bioreactors (SMBR). This study is focused on the influence of the cake porosity of different particle microscopic packed structures on the filtration performance of hollow fiber systems. An integrated model based on the finite element method to simulate numerically the flow in an SMBR is presented. The model coupled the Navier-Stokes and Darcy Brinkman equations to simulate a complete filtration run...
November 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/29143765/relative-influence-of-socioeconomic-psychological-and-sensory-characteristics-physical-activity-and-diet-on-5-year-weight-gain-in-french-adults
#10
Aurélie Lampuré, Katia Castetbon, Mohamed Hanafi, Amélie Deglaire, Pascal Schlich, Sandrine Péneau, Serge Hercberg, Caroline Méjean
Individual characteristics, dietary intake and physical activity influence weight status; however, the contribution of each factor to weight change has not been studied. The objective was to confirm a conceptual framework by simultaneously assessing the relative influence of socioeconomic, psychological and sensory characteristics, physical activity, and dietary intake on five-year weight gain in French adults. Individual characteristics, physical activity, and dietary data were assessed at baseline in 8014 participants in the NutriNet-Santé cohort...
October 28, 2017: Nutrients
https://www.readbyqxmd.com/read/29143630/examining-the-mechanisms-by-which-women-s-status-and-empowerment-affect-skilled-birth-attendant-use-in-senegal-a-structural-equation-modeling-approach
#11
Kyoko Shimamoto, Jessica D Gipson
BACKGROUND: Despite the reduction in maternal deaths globally, maternal mortality rates remain unacceptably high, particularly in some regions of the world. In sub-Saharan Africa, maternal mortality rates have even increased recently, with 201,000 deaths in 2015 as compared to 179,000 in 2013. Use of a skilled birth attendant (SBA) at delivery has remained low, despite evidence of the effectiveness of SBAs in reducing maternal deaths. Women's empowerment is increasingly recognized as a key determinant of maternal health care-seeking and outcomes, yet empirical examinations of the linkages between women's empowerment and delivery care use are particularly limited, especially from sub-Saharan Africa...
November 8, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/29140742/the-poor-availability-of-syntaxes-of-structural-equation-modeling
#12
Jelte M Wicherts, Elise A V Crompvoets
The syntax or codes used to fit Structural Equation Models (SEMs) convey valuable information on model specifications and the manner in which SEMs are estimated. We requested SEM syntaxes from a random sample of 229 articles (published in 1998-2013) that ran SEMs using LISREL, AMOS, or Mplus. After exchanging over 500 emails, we ended up obtaining a meagre 57 syntaxes used in these articles (24.9% of syntaxes we requested). Results considering the 129 (corresponding) authors who replied to our request showed that the odds of the syntax being lost increased by 21% per year passed since publication of the article, while the odds of actually obtaining a syntax dropped by 13% per year...
2017: Accountability in Research
https://www.readbyqxmd.com/read/29140560/negative-posttrauma-cognitions-mediate-the-association-between-morally-injurious-events-and-trauma-related-psychopathology-in-treatment-seeking-veterans
#13
Philip Held, Brian J Klassen, Denise S Zou, Blake S Schroedter, Niranjan S Karnik, Mark H Pollack, Alyson K Zalta
Exposure to potentially morally injurious events has been shown to be associated with posttraumatic stress disorder (PTSD) and depression symptoms in military personnel. Few studies have examined factors that help to explain how potentially morally injurious events may contribute to the development of trauma-related psychopathology. Negative posttrauma cognitions are thought to play a role in the etiology of PTSD and depression following trauma; however, it is unclear whether more global beliefs about the self, others, and world play a role in the development of PTSD and depression due to morally injurious events...
November 15, 2017: Journal of Traumatic Stress
https://www.readbyqxmd.com/read/29140129/calling-injury-timeouts-for-the-medical-evaluation-of-concussion-determinants-of-collegiate-football-officials-behavior
#14
Emily Kroshus, John Parsons, Brian Hainline
CONTEXT:   Sports officials can play an important role in concussion safety by calling injury timeouts so that athletic trainers can evaluate athletes with possible concussions. Understanding the determinants of whether officials call an injury timeout when they suspect a concussion has important implications for the design of interventions that better support officials in this role. OBJECTIVE:   To assess the knowledge of US collegiate football officials about concussion symptoms and to determine the associations between knowledge, perceived injunctive norms, and self-efficacy and calling injury timeouts for suspected concussions in athletes...
November 8, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/29139575/developmental-links-between-gaming-and-depressive-symptoms
#15
Jakub Mikuška, Alexander T Vazsonyi
The current longitudinal study tested the reciprocal relationships between video game play and depressive symptoms among 9,421 adolescents from the Add Health (Mage  = 16.15 years, SD = 1.64, 55% female), over 11 years (Waves 2, 3, and 4), ages 16 to 27. Based on structural equation modeling as well as latent growth models, findings indicated that (1) excessive gaming was largely transient over time, from adolescence to early adulthood; (2) excessive gaming predicted increases in depressive symptoms; and (3) in turn, depressive symptoms predicted decreases in gaming over time...
November 15, 2017: Journal of Research on Adolescence: the Official Journal of the Society for Research on Adolescence
https://www.readbyqxmd.com/read/29139172/association-between-structural-brain-network-efficiency-and-intelligence-increases-during-adolescence
#16
Marinka M G Koenis, Rachel M Brouwer, Suzanne C Swagerman, Inge L C van Soelen, Dorret I Boomsma, Hilleke E Hulshoff Pol
Adolescence represents an important period during which considerable changes in the brain take place, including increases in integrity of white matter bundles, and increasing efficiency of the structural brain network. A more efficient structural brain network has been associated with higher intelligence. Whether development of structural network efficiency is related to intelligence, and if so to which extent genetic and environmental influences are implicated in their association, is not known. In a longitudinal study, we mapped FA-weighted efficiency of the structural brain network in 310 twins and their older siblings at an average age of 10, 13, and 18 years...
November 14, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/29138431/modelling-the-effect-of-beliefs-about-asthma-medication-and-treatment-intrusiveness-on-adherence-and-preference-for-once-daily-vs-twice-daily-medication
#17
Sarah Chapman, Peter Dale, Henrik Svedsater, Gillian Stynes, Nicola Vyas, David Price, Rob Horne
People with asthma who do not adhere to their maintenance medication may experience poorer asthma control and need more healthcare support than those who adhere. People (N = 1010) aged 18-55 years with self-reported asthma, taking one or more asthma maintenance medication(s), from five European countries, participated in a survey using validated scales (Medication Adherence Report Scale [MARS], Asthma Control Test™ [ACT], Beliefs about Medicine Questionnaire [BMQ] and the Asthma Treatment Intrusiveness Questionnaire [ATIQ])...
November 14, 2017: NPJ Primary Care Respiratory Medicine
https://www.readbyqxmd.com/read/29138272/the-role-of-peers-for-diabetes-management-in-adolescents-and-emerging-adults-with-type-1-diabetes-a-longitudinal-study
#18
Koen Raymaekers, Leen Oris, Sofie Prikken, Philip Moons, Eva Goossens, Ilse Weets, Koen Luyckx
OBJECTIVE: The increasing importance of peers in adolescence and emerging adulthood has been widely acknowledged. However, longitudinal research linking the peer context to diabetes management and outcomes is scarce. The present longitudinal study in a large sample of youths with type 1 diabetes related both positive and negative peer variables to diabetes outcomes over a time interval of 1 year. RESEARCH DESIGN AND METHODS: Our sample consisted of 467 adolescents (14-17 years of age) and emerging adults (18-25 years of age) with type 1 diabetes who participated in a two-wave longitudinal study...
November 14, 2017: Diabetes Care
https://www.readbyqxmd.com/read/29136310/brain-networks-of-the-imaginative-mind-dynamic-functional-connectivity-of-default-and-cognitive-control-networks-relates-to-openness-to-experience
#19
Roger E Beaty, Qunlin Chen, Alexander P Christensen, Jiang Qiu, Paul J Silvia, Daniel L Schacter
Imagination and creative cognition are often associated with the brain's default network (DN). Recent evidence has also linked cognitive control systems to performance on tasks involving imagination and creativity, with a growing number of studies reporting functional interactions between cognitive control and DN regions. We sought to extend the emerging literature on brain dynamics supporting imagination by examining individual differences in large-scale network connectivity in relation to Openness to Experience, a personality trait typified by imagination and creativity...
November 14, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/29135834/associations-between-fixed-term-employment-and-health-and-behaviors-what-are-the-mechanisms
#20
Dorota Żołnierczyk-Zreda, Sylwia Bedyńska
OBJECTIVE: To analyze the associations between fixed-term employment and health (work ability and mental health) and behaviors (engagement and performance). Psychological contract fulfilment (PCF) and breach (PCB) are investigated as potential mediators of these associations. METHODS: Seven hundred workers employed on fixed-term contracts from a broad range of organizations participated in the study. The Structural Equation Model was performed to analyze the data...
November 13, 2017: Journal of Occupational and Environmental Medicine
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