Search results for "observational [Methods]"

Factores asociados al estrés prenatal y la ansiedad en gestantes durante el COVID-19 en España

2022

AIM OF THE STUDY To describe prenatal stress and state anxiety levels in pregnant women living in Spain during the lockdown of the first wave of COVID-19 and its relation with obstetric factors, perception of health care, and concerns about the socio-sanitary situation. METHODS The present study is an observational, correlational, and cross-sectional quantitative study. The participants in the study were pregnant women recruited through non-probabilistic convenience and snowball sampling during the lockdown. A web link was provided to an online questionnaire designed for this research, which collected socio-demographic and obstetric variables, perceptions of health care received during the …

Aortic Stiffness in HIV Infection with and without Antiretroviral Therapy. A Meta-analysis of Observational Studies

2020

Background: The risk of Cardiovascular (CV) events is higher in HIV-infected patients (HIV+) compared to HIV-uninfected persons (HIV−). Large artery stiffness, a well-documented predictor of adverse CV prognosis, may mediate this enhanced risk. It is usually assessed by measuring aortic Pulse Wave Velocity (aPWV). Studies examining arterial stiffness in HIV+ yielded inconsistent results. We performed a meta-analysis with the aim to evaluate the association of HIV infection and its therapy [Antiretroviral Therapy (ART)] with aPWV. Design and Method: The Standardized Mean Difference (SMD) and corresponding 95% confidence intervals were calculated for aPWV in different comparison groups. Stati…

Physical activity and exercise in mild cognitive impairment and dementia::an umbrella review of intervention and observational studies

2020

Objectives:\ud \ud The aim of this umbrella review was to determine the effect of physical activity/exercise on improving cognitive and noncognitive outcomes in people with MCI (mild cognitive impairment) and dementia.\ud \ud Design:\ud \ud Umbrella review of systematic reviews (SR), with or without meta-analyses (MAs), of randomized controlled trials (RCTs) and observational studies.\ud \ud Settings and Participants:\ud \ud People with MCI or dementia, confirmed through validated assessment measures. Any form of physical activity/exercise was included. As controls, we included participants not following any prespecified physical activity/exercise intervention or following the same standard…

Face mask use in the Community for Reducing the Spread of COVID-19: a systematic review

2021

ABSTRACTBackgroundEvidence is needed on the effectiveness of wearing face masks in the community to prevent SARS-CoV-2 transmission.MethodsSystematic review and meta-analysis to investigate the efficacy and effectiveness of face mask use in a community setting and to predict the effectiveness of wearing a mask. We searched MEDLINE, EMBASE, SCISEARCH, The Cochrane Library and pre-prints from inception to 22 April 2020 without restriction by language. We rated the certainty of evidence according to Cochrane and GRADE approach.FindingsOur search identified 35 studies, including 3 randomised controlled trials (RCTs) (4017 patients), 10 comparative studies (18984 patients), 13 predictive models,…

Digital Devices Use and Language Skills in Children between 8 and 36 Month

2020

Background: Over the past decade, the use of digital tools has grown and research evidence suggests that traditional media and new media offer both benefits and health risks for young children. The abilities to understand and use language represent two of the most important competencies developed during the first 3 years of life through the interaction of the child with people, objects, events, and other environmental factors. The main goal of our study is to evaluate the relationship between digital devices use and language abilities in children between 8 and 36 month, also considering the influence of several factors. Materials and Methods: We conducted a cross-sectional observational stu…

2017

Aim of the study was the development and validation of the psychometric properties of a six-item bi-factorial instrument for the assessment of social support (emotional and tangible support) with a population-based sample. A cross-sectional data set of N = 15,010 participants enrolled in the Gutenberg Health Study (GHS) in 2007–2012 was divided in two sub-samples. The GHS is a population-based, prospective, observational single-center cohort study in the Rhein-Main-Region in western Mid-Germany. The first sub-sample was used for scale development by performing an exploratory factor analysis. In order to test construct validity, confirmatory factor analyses were run to compare the extracted …

Diferencias de género entre autocultivadores de cannabis en España

2019

The increase in cannabis use coincides with the proliferation of small-scale cannabis cultivation. These crops facilitate substance availability and increased use. Some investigations have studied the characteristics of small-scale cultivators; however, it is not known whether their profiles differ by gender. The aim of the present study was to analyse differences among growers regarding sociodemographic variables, patterns of use and health problems from a gender perspective. A descriptive observational study was designed with a sample of 219 cultivators (157 men and 62 women), aged between 18 and 34. Problematic use of cannabis (CPQ), cannabis dependence (SDS), patterns of abuse (CAST), r…

The level of context dependence of engagement markers in Peninsular Spanish and US business websites

2019

This paper examines the impact of Spaniards’ and North-Americans’ level of context dependence (Hall, 1976) on the engagement markers (Hyland & Tse, 2004) used on the presentation page of 100 business websites from the toy sector (50 from Spain and 50 from the US). Following an observational and a quantitative analysis, the findings reveal remarkable statistical differences in the interactional discourse of this digital genre, which may be a valuable source of information for export companies to introduce their products abroad by means of their business websites. In addition, we believe that the business website can be used in the teaching and learning of Spanish and English for professional…

Fixed versus Growth Mindset Does not Seem to Matter Much

2018

Psychology predicts that a student’s mindset—their implicit theory of intelligence—has an effect on their academic performance. We attempted to corroborate this in the computer science education context by asking the students on two bachelor-level courses, typically taken in the third year of studies, to fill out a standard mindset questionnaire, and analyzing their answers in relation to their grades on those courses. In a sample of 133 students, with only 24 (18 %) students with a clear fixed mindset, there is no detectable correlation between the students’ mindsets and their course grades. An ordinal logistic regression estimates, at the 95 % confidence level, a statistically nonsignific…

Offensive Transitions in High-Performance Football: Differences Between UEFA Euro 2008 and UEFA Euro 2016

2019

[Abstract] Coaches, footballers and researchers agree that offensive transitions are one of the most important moments in football today. In a sport where defense over attack dominates, with low scores on the scoreboard, the importance of these actions from the offensive point of view becomes very important. Despite this, scientific literature is still very limited on this topic. Therefore, the objectives set out in the present investigation have been two: first, by means of a proportion analysis and the application of a chisquare test, it was intended to describe the possible differences between the offensive transitions made in the UEFA Euro 2008 and UEFA Euro 2016; then, through differen…