Phenotypic, Genetic and Environmental Architecture of the Components of Sleep Quality.

The genetic and environmental underpinnings of sleep quality have been widely investigated. However, less is known about the etiology of the different sleep quality components and their associations. Subjective sleep quality has been studied most commonly using the Pittsburgh Sleep Quality Index (PSQI).

Smoking remains associated with education after controlling for social background and genetic factors in a study of 18 twin cohorts.

We tested the causality between education and smoking using the natural experiment of discordant twin pairs allowing to optimally control for background genetic and childhood social factors. Data from 18 cohorts including 10,527 monozygotic (MZ) and same-sex dizygotic (DZ) twin pairs discordant for education and smoking were analyzed by linear fixed effects regression models. Within twin pairs, education levels were lower among the currently smoking than among the never smoking co-twins and this education difference was larger within DZ than MZ pairs.

Educational attainment of same-sex and opposite-sex dizygotic twins: An individual-level pooled study of 19 twin cohorts.

Comparing twins from same- and opposite-sex pairs can provide information on potential sex differences in a variety of outcomes, including socioeconomic-related outcomes such as educational attainment. It has been suggested that this design can be applied to examine the putative role of intrauterine exposure to testosterone for educational attainment, but the evidence is still disputed. Thus, we established an international database of twin data from 11 countries with 88,290 individual dizygotic twins born over 100 years and tested for differences between twins from same- and opposite-sex dizygotic pairs in educational attainment.

Analysis of Quality of Life and Nutritional Status in Elderly Patients with Dysphagia in Order to Prevent Hospital Admissions in a COVID-19 Pandemic.

(1) Background: Oropharyngeal dysphagia (OD) is currently recognized as one of the geriatric syndromes due to its high frequency in older people and its associated complications, which have a direct impact on quality of life. The main objective is to determine the effectiveness of telehealth consultation for the re-evaluation of nutritional status and quality of life assessment in older people diagnosed with OD associated with active use of thickeners to prevent hospital admissions in a COVID-19 pandemic. (2) Methods: an observational, descriptive, and longitudinal study that included a sample of 33 subjects with age equal or superior to 65 years diagnosed with OD with conserved cognitive capacity.

Genetic and environmental variation in educational attainment: an individual-based analysis of 28 twin cohorts.

We investigated the heritability of educational attainment and how it differed between birth cohorts and cultural-geographic regions. A classical twin design was applied to pooled data from 28 cohorts representing 16 countries and including 193,518 twins with information on educational attainment at 25 years of age or older. Genetic factors explained the major part of individual differences in educational attainment (heritability: a = 0.

[Home enteral nutrition in patients with neurological disease in an area of the southeast of Spain].

Introduction: malnutrition in patients with neurological disease is very prevalent, worsening their complications and diminishing their quality of life. For that reason, nutritional support can provide a reduction in comorbidities. Over the past years, in Murcia (southeast of Spain), a clinical pathway has been stablished in accordance to the National Home Enteral Nutrition guide (HEN) to optimize this resource and reduce the prescription gap.

An Update of Twin Research in Spain: The Murcia Twin Registry.

The Murcia Twin Registry (MTR) is the only population-based registry in Spain. Created in 2006, the registry has been growing more than a decade to become one of the references for twin research in the Mediterranean region. The MTR database currently comprises 3545 adult participants born between 1940 and 1977.

Analysis of a clinical pathway for home enteral nutrition in the Region of Murcia. Consumption and associated expenses and adaptation to the National Health System Guide.

Objective: To analyze the compliance with the Guide for home enteral nutrition (HEN) of the Spanish national health system of the prescriptions made in a specific area (Health Area I of the Region of Murcia) before and after implementation of a clinical pathway based on that guide, and to compare the changes in healthcare costs of diet therapy during the 2007-2014 period in the Regional and National Health system.

Method: A descriptive study to quantify compliance with the main criteria of the HEN guide before (2010) and after (2013-2014) implementation of the clinical pathway. Changes in health expenditure and consumption during the 2007-2014 period were also analyzed.

Association of current and former smoking with body mass index: A study of smoking discordant twin pairs from 21 twin cohorts.

Background: Smokers tend to weigh less than never smokers, while successful quitting leads to an increase in body weight. Because smokers and non-smokers may differ in genetic and environmental family background, we analysed data from twin pairs in which the co-twins differed by their smoking behaviour to evaluate if the association between smoking and body mass index (BMI) remains after controlling for family background.

Methods And Findings: The international CODATwins database includes information on smoking and BMI measured between 1960 and 2012 from 156,593 twin individuals 18-69 years of age.

Heritability of sleep quality in a middle-aged twin sample from Spain.

Study Objectives: Sleep quality is associated with health throughout the life span, which is particularly salient in middle-age and older adulthood. Sleep quality appears to be influenced by both genetic and environmental factors. However, there is still limited information about genetic influences on sleep quality in middle-aged adults, and particularly in those from certain geographical locations.

Correction to: Altruistic Behavior among Twins : Willingness to Fight and Self-Sacrifice for Their Closest Relatives.

The original version of this article unfortunately contained a mistake. The presentation of the article title and subtitle was incorrect.

Altruistic Behavior among Twins : Willingness to Fight and Self-Sacrifice for Their Closest Relatives.

According to kin selection theory, indirect reproductive advantages may induce individuals to care for others with whom they share genes by common descent, and the amount of care, including self-sacrifice, will increase with the proportion of genes shared. Twins represent a natural situation in which this hypothesis can be tested. Twin pairs experience the same early environment because they were born and raised at the same time and in the same family but their genetic relatedness differs depending on zygosity.

Effects of Social Attitude Change on Smoking Heritability.

Societal attitudes and norms to female smoking changed in Spain in the mid-twentieth century from a restrictive to a tolerant, and an even pro-smoking, posture, while social attitudes remained stable for males. We explored whether this difference in gender-related social norms influenced the heritability of two tobacco use measures: lifetime smoking and number of years smoking. We used a population-based sample of 2285 twins (mean age = 55.

Serotonin-transporter promoter polymorphism modulates the ability to control food intake: Effect on total weight loss.

Scope: The biggest challenge for losing weight is the ability to control the amount of food eaten; the tendency to overeat is called disinhibition. Our aims were to determine whether (a) the SLC6A4-promoter variant (5-HTTLPR) relates to disinhibition; (b) this association could affect total weight-loss during a behavioral/dietary treatment for obesity.

Methods And Results: A total of 2961 subjects attended voluntarily five weight-loss clinics; a subsample (n = 624) was recruited for SLC6A4 genotyping.

[Establishment of a clinical pathway for home enteral nutrition prescription in Murcia. Profile and sample characteristics].

Introduction: Before 2010, prescribed home enteral nutrition (HEN) in Murcia was characterized by the great variability of the receptor patients, in addition to a higher use compared with other geographical areas. Objectives: Developing and describing a clinical pathway for attending candidates for HEN, and analyzing their profi le and prescription characteristics. Methods: Establishment of a clinical pathway for HEN prescription.

Does the sex of one's co-twin affect height and BMI in adulthood? A study of dizygotic adult twins from 31 cohorts.

Background: The comparison of traits in twins from opposite-sex (OS) and same-sex (SS) dizygotic twin pairs is considered a proxy measure of prenatal hormone exposure. To examine possible prenatal hormonal influences on anthropometric traits, we compared mean height, body mass index (BMI), and the prevalence of being overweight or obese between men and women from OS and SS dizygotic twin pairs.

Methods: The data were derived from the COllaborative project of Development of Anthropometrical measures in Twins (CODATwins) database, and included 68,494 SS and 53,808 OS dizygotic twin individuals above the age of 20 years from 31 twin cohorts representing 19 countries.

Association between birthweight and later body mass index: an individual-based pooled analysis of 27 twin cohorts participating in the CODATwins project.

Background: There is evidence that birthweight is positively associated with body mass index (BMI) in later life, but it remains unclear whether this is explained by genetic factors or the intrauterine environment. We analysed the association between birthweight and BMI from infancy to adulthood within twin pairs, which provides insights into the role of genetic and environmental individual-specific factors.

Methods: This study is based on the data from 27 twin cohorts in 17 countries.

[The Murcia Twin Registry. A resource for research on health-related behaviour].

Genetically informative designs and, in particular, twin studies, are the most widely used methodology to analyse the relative contribution of genetic and environmental factors to inter-individual variability. These studies basically compare the degree of phenotypical similarity between monozygotic and dizygotic twin pairs. In addition to the traditional estimate of heritability, this kind of registry enables a wide variety of analyses which are unique due to the characteristics of the sample.

Does Familial Aggregation of Chronic Low Back Pain Affect Recovery?: A Population-Based Twin Study.

Study Design: Longitudinal twin-cohort study.

Objective: To investigate the effect familial aggregation of chronic low back pain (LBP) has on the recovery from chronic LBP.

Summary Of Background Data: LBP is a worldwide problem, with pain and disability often becoming chronic.

Does educational attainment increase the risk of low back pain when genetics are considered? A population-based study of Spanish twins.

Background Context: There is limited research investigating educational attainment as a risk factor for low back pain (LBP), with the influence of gender commonly being neglected. Furthermore, genetics and early shared environment explain a substantial proportion of LBP cases and need to be controlled for when investigating risk factors for LBP.

Purpose: To investigate whether educational attainment affects the prevalence and risk of LBP differently in men and women while controlling for the influence of genetics and early shared environment.

Genetic and environmental influences on adult human height across birth cohorts from 1886 to 1994.

Human height variation is determined by genetic and environmental factors, but it remains unclear whether their influences differ across birth-year cohorts. We conducted an individual-based pooled analysis of 40 twin cohorts including 143,390 complete twin pairs born 1886-1994. Although genetic variance showed a generally increasing trend across the birth-year cohorts, heritability estimates (0.

[Not Available].

Introducción: en Murcia, y hasta 2010, la administración de la nutrición enteral domiciliaria (NED) dictaba cumplir la regulación marcada en cuanto a los facultativos con competencias para su prescripción.Objetivos: examinar aspectos esenciales de este recurso en el periodo 2007-2010, características de la muestra y evolución del coste, así como perspectivas de futuro.Métodos: estudio del perfil de la población NED en un área de salud específica.

Age and gender effects on the prevalence of poor sleep quality in the adult population.

Objective: Sleep quality has a significant impact on health and quality of life and is affected, among other factors, by age and sex. However, the prevalence of problems in this area in the general population is not well known. Therefore, our objective was to study the prevalence and main characteristics of sleep quality in an adult population sample.